diff --git a/libc/charstod.c b/libc/charstod.c
index 2a4399a..cbe6d3d 100644
--- a/libc/charstod.c
+++ b/libc/charstod.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 /*
  * Reads a floating-point number by interpreting successive characters
@@ -8,74 +24,62 @@
  * necessary to back up the input stream up one byte after calling charstod.
  */
 
-#define ADVANCE *s++ = c; if(s>=e) return __NaN(); c = (*f)(vp)
-
 double
-charstod(int(*f)(void*), void *vp)
+fmtcharstod(int(*f)(void*), void *vp)
 {
-	char str[400], *s, *e, *start;
-	int c;
+	double num, dem;
+	int neg, eneg, dig, exp, c;
+
+	num = 0;
+	neg = 0;
+	dig = 0;
+	exp = 0;
+	eneg = 0;
 
-	s = str;
-	e = str + sizeof str - 1;
 	c = (*f)(vp);
 	while(c == ' ' || c == '\t')
 		c = (*f)(vp);
 	if(c == '-' || c == '+'){
-		ADVANCE;
+		if(c == '-')
+			neg = 1;
+		c = (*f)(vp);
 	}
-	start = s;
 	while(c >= '0' && c <= '9'){
-		ADVANCE;
+		num = num*10 + c-'0';
+		c = (*f)(vp);
 	}
-	if(c == '.'){
-		ADVANCE;
-		while(c >= '0' && c <= '9'){
-			ADVANCE;
-		}
+	if(c == '.')
+		c = (*f)(vp);
+	while(c >= '0' && c <= '9'){
+		num = num*10 + c-'0';
+		dig++;
+		c = (*f)(vp);
 	}
-	if(s > start && (c == 'e' || c == 'E')){
-		ADVANCE;
+	if(c == 'e' || c == 'E'){
+		c = (*f)(vp);
 		if(c == '-' || c == '+'){
-			ADVANCE;
+			if(c == '-'){
+				dig = -dig;
+				eneg = 1;
+			}
+			c = (*f)(vp);
 		}
 		while(c >= '0' && c <= '9'){
-			ADVANCE;
+			exp = exp*10 + c-'0';
+			c = (*f)(vp);
 		}
-	}else if(s == start && (c == 'i' || c == 'I')){
-		ADVANCE;
-		if(c != 'n' && c != 'N')
-			return __NaN();
-		ADVANCE;
-		if(c != 'f' && c != 'F')
-			return __NaN();
-		ADVANCE;
-		if(c != 'i' && c != 'I')
-			return __NaN();
-		ADVANCE;
-		if(c != 'n' && c != 'N')
-			return __NaN();
-		ADVANCE;
-		if(c != 'i' && c != 'I')
-			return __NaN();
-		ADVANCE;
-		if(c != 't' && c != 'T')
-			return __NaN();
-		ADVANCE;
-		if(c != 'y' && c != 'Y')
-			return __NaN();
-		ADVANCE;  /* so caller can back up uniformly */
-		USED(c);
-	}else if(s == str && (c == 'n' || c == 'N')){
-		ADVANCE;
-		if(c != 'a' && c != 'A')
-			return __NaN();
-		ADVANCE;
-		if(c != 'n' && c != 'N')
-			return __NaN();
-		ADVANCE;  /* so caller can back up uniformly */
-		USED(c);
 	}
-	*s = 0;
-	return strtod(str, &s);
+	exp -= dig;
+	if(exp < 0){
+		exp = -exp;
+		eneg = !eneg;
+	}
+	dem = __fmtpow10(exp);
+	if(eneg)
+		num /= dem;
+	else
+		num *= dem;
+	if(neg)
+		return -num;
+	return num;
 }
diff --git a/libc/dofmt.c b/libc/dofmt.c
index cdf40a3..97bbc92 100644
--- a/libc/dofmt.c
+++ b/libc/dofmt.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 /* format the output into f->to and return the number of characters fmted  */
@@ -14,8 +29,8 @@ dofmt(Fmt *f, char *fmt)
 	nfmt = f->nfmt;
 	for(;;){
 		if(f->runes){
-			rt = f->to;
-			rs = f->stop;
+			rt = (Rune*)f->to;
+			rs = (Rune*)f->stop;
 			while((r = *(uchar*)fmt) && r != '%'){
 				if(r < Runeself)
 					fmt++;
@@ -32,8 +47,8 @@ dofmt(Fmt *f, char *fmt)
 				return f->nfmt - nfmt;
 			f->stop = rs;
 		}else{
-			t = f->to;
-			s = f->stop;
+			t = (char*)f->to;
+			s = (char*)f->stop;
 			while((r = *(uchar*)fmt) && r != '%'){
 				if(r < Runeself){
 					FMTCHAR(f, t, s, r);
@@ -41,9 +56,9 @@ dofmt(Fmt *f, char *fmt)
 				}else{
 					n = chartorune(&rune, fmt);
 					if(t + n > s){
-						t = _fmtflush(f, t, n);
+						t = (char*)__fmtflush(f, t, n);
 						if(t != nil)
-							s = f->stop;
+							s = (char*)f->stop;
 						else
 							return -1;
 					}
@@ -59,15 +74,14 @@ dofmt(Fmt *f, char *fmt)
 			f->stop = s;
 		}
 
-		fmt = _fmtdispatch(f, fmt, 0);
+		fmt = (char*)__fmtdispatch(f, fmt, 0);
 		if(fmt == nil)
 			return -1;
 	}
-	return 0;	/* not reached */
 }
 
 void *
-_fmtflush(Fmt *f, void *t, int len)
+__fmtflush(Fmt *f, void *t, int len)
 {
 	if(f->runes)
 		f->nfmt += (Rune*)t - (Rune*)f->to;
@@ -86,13 +100,13 @@ _fmtflush(Fmt *f, void *t, int len)
  * left/right justified in a field of at least f->width charactes
  */
 int
-_fmtpad(Fmt *f, int n)
+__fmtpad(Fmt *f, int n)
 {
 	char *t, *s;
 	int i;
 
-	t = f->to;
-	s = f->stop;
+	t = (char*)f->to;
+	s = (char*)f->stop;
 	for(i = 0; i < n; i++)
 		FMTCHAR(f, t, s, ' ');
 	f->nfmt += t - (char *)f->to;
@@ -101,13 +115,13 @@ _fmtpad(Fmt *f, int n)
 }
 
 int
-_rfmtpad(Fmt *f, int n)
+__rfmtpad(Fmt *f, int n)
 {
 	Rune *t, *s;
 	int i;
 
-	t = f->to;
-	s = f->stop;
+	t = (Rune*)f->to;
+	s = (Rune*)f->stop;
 	for(i = 0; i < n; i++)
 		FMTRCHAR(f, t, s, ' ');
 	f->nfmt += t - (Rune *)f->to;
@@ -116,24 +130,24 @@ _rfmtpad(Fmt *f, int n)
 }
 
 int
-_fmtcpy(Fmt *f, void *vm, int n, int sz)
+__fmtcpy(Fmt *f, const void *vm, int n, int sz)
 {
 	Rune *rt, *rs, r;
 	char *t, *s, *m, *me;
 	ulong fl;
 	int nc, w;
 
-	m = vm;
+	m = (char*)vm;
 	me = m + sz;
 	w = f->width;
 	fl = f->flags;
 	if((fl & FmtPrec) && n > f->prec)
 		n = f->prec;
 	if(f->runes){
-		if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0)
+		if(!(fl & FmtLeft) && __rfmtpad(f, w - n) < 0)
 			return -1;
-		rt = f->to;
-		rs = f->stop;
+		rt = (Rune*)f->to;
+		rs = (Rune*)f->stop;
 		for(nc = n; nc > 0; nc--){
 			r = *(uchar*)m;
 			if(r < Runeself)
@@ -146,15 +160,13 @@ _fmtcpy(Fmt *f, void *vm, int n, int sz)
 		}
 		f->nfmt += rt - (Rune *)f->to;
 		f->to = rt;
-		if(m < me)
-			return -1;
-		if(fl & FmtLeft && _rfmtpad(f, w - n) < 0)
+		if(fl & FmtLeft && __rfmtpad(f, w - n) < 0)
 			return -1;
 	}else{
-		if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0)
+		if(!(fl & FmtLeft) && __fmtpad(f, w - n) < 0)
 			return -1;
-		t = f->to;
-		s = f->stop;
+		t = (char*)f->to;
+		s = (char*)f->stop;
 		for(nc = n; nc > 0; nc--){
 			r = *(uchar*)m;
 			if(r < Runeself)
@@ -167,48 +179,48 @@ _fmtcpy(Fmt *f, void *vm, int n, int sz)
 		}
 		f->nfmt += t - (char *)f->to;
 		f->to = t;
-		if(fl & FmtLeft && _fmtpad(f, w - n) < 0)
+		if(fl & FmtLeft && __fmtpad(f, w - n) < 0)
 			return -1;
 	}
 	return 0;
 }
 
 int
-_fmtrcpy(Fmt *f, void *vm, int n)
+__fmtrcpy(Fmt *f, const void *vm, int n)
 {
 	Rune r, *m, *me, *rt, *rs;
 	char *t, *s;
 	ulong fl;
 	int w;
 
-	m = vm;
+	m = (Rune*)vm;
 	w = f->width;
 	fl = f->flags;
 	if((fl & FmtPrec) && n > f->prec)
 		n = f->prec;
 	if(f->runes){
-		if(!(fl & FmtLeft) && _rfmtpad(f, w - n) < 0)
+		if(!(fl & FmtLeft) && __rfmtpad(f, w - n) < 0)
 			return -1;
-		rt = f->to;
-		rs = f->stop;
+		rt = (Rune*)f->to;
+		rs = (Rune*)f->stop;
 		for(me = m + n; m < me; m++)
 			FMTRCHAR(f, rt, rs, *m);
 		f->nfmt += rt - (Rune *)f->to;
 		f->to = rt;
-		if(fl & FmtLeft && _rfmtpad(f, w - n) < 0)
+		if(fl & FmtLeft && __rfmtpad(f, w - n) < 0)
 			return -1;
 	}else{
-		if(!(fl & FmtLeft) && _fmtpad(f, w - n) < 0)
+		if(!(fl & FmtLeft) && __fmtpad(f, w - n) < 0)
 			return -1;
-		t = f->to;
-		s = f->stop;
+		t = (char*)f->to;
+		s = (char*)f->stop;
 		for(me = m + n; m < me; m++){
 			r = *m;
 			FMTRUNE(f, t, s, r);
 		}
 		f->nfmt += t - (char *)f->to;
 		f->to = t;
-		if(fl & FmtLeft && _fmtpad(f, w - n) < 0)
+		if(fl & FmtLeft && __fmtpad(f, w - n) < 0)
 			return -1;
 	}
 	return 0;
@@ -216,47 +228,47 @@ _fmtrcpy(Fmt *f, void *vm, int n)
 
 /* fmt out one character */
 int
-_charfmt(Fmt *f)
+__charfmt(Fmt *f)
 {
 	char x[1];
 
 	x[0] = va_arg(f->args, int);
 	f->prec = 1;
-	return _fmtcpy(f, x, 1, 1);
+	return __fmtcpy(f, (const char*)x, 1, 1);
 }
 
 /* fmt out one rune */
 int
-_runefmt(Fmt *f)
+__runefmt(Fmt *f)
 {
 	Rune x[1];
 
 	x[0] = va_arg(f->args, int);
-	return _fmtrcpy(f, x, 1);
+	return __fmtrcpy(f, (const void*)x, 1);
 }
 
 /* public helper routine: fmt out a null terminated string already in hand */
 int
 fmtstrcpy(Fmt *f, char *s)
 {
-	int p, i;
+	int i, j;
+	Rune r;
+
 	if(!s)
-		return _fmtcpy(f, "<nil>", 5, 5);
+		return __fmtcpy(f, "<nil>", 5, 5);
 	/* if precision is specified, make sure we don't wander off the end */
 	if(f->flags & FmtPrec){
-		p = f->prec;
-		for(i = 0; i < p; i++)
-			if(s[i] == 0)
-				break;
-		return _fmtcpy(f, s, utfnlen(s, i), i);	/* BUG?: won't print a partial rune at end */
+		i = 0;
+		for(j=0; j<f->prec && s[i]; j++)
+			i += chartorune(&r, s+i);
+		return __fmtcpy(f, s, j, i);
 	}
-
-	return _fmtcpy(f, s, utflen(s), strlen(s));
+	return __fmtcpy(f, s, utflen(s), strlen(s));
 }
 
 /* fmt out a null terminated utf string */
 int
-_strfmt(Fmt *f)
+__strfmt(Fmt *f)
 {
 	char *s;
 
@@ -272,7 +284,7 @@ fmtrunestrcpy(Fmt *f, Rune *s)
 	int n, p;
 
 	if(!s)
-		return _fmtcpy(f, "<nil>", 5, 5);
+		return __fmtcpy(f, "<nil>", 5, 5);
 	/* if precision is specified, make sure we don't wander off the end */
 	if(f->flags & FmtPrec){
 		p = f->prec;
@@ -284,12 +296,12 @@ fmtrunestrcpy(Fmt *f, Rune *s)
 			;
 		n = e - s;
 	}
-	return _fmtrcpy(f, s, n);
+	return __fmtrcpy(f, s, n);
 }
 
 /* fmt out a null terminated rune string */
 int
-_runesfmt(Fmt *f)
+__runesfmt(Fmt *f)
 {
 	Rune *s;
 
@@ -299,18 +311,18 @@ _runesfmt(Fmt *f)
 
 /* fmt a % */
 int
-_percentfmt(Fmt *f)
+__percentfmt(Fmt *f)
 {
 	Rune x[1];
 
 	x[0] = f->r;
 	f->prec = 1;
-	return _fmtrcpy(f, x, 1);
+	return __fmtrcpy(f, (const void*)x, 1);
 }
 
 /* fmt an integer */
 int
-_ifmt(Fmt *f)
+__ifmt(Fmt *f)
 {
 	char buf[70], *p, *conv;
 	uvlong vu;
@@ -322,6 +334,21 @@ _ifmt(Fmt *f)
 	isv = 0;
 	vu = 0;
 	u = 0;
+#ifndef PLAN9PORT
+	/*
+	 * Unsigned verbs for ANSI C
+	 */
+	switch(f->r){
+	case 'x':
+	case 'X':
+	case 'o':
+	case 'u':
+	case 'p':
+		fl |= FmtUnsigned;
+		fl &= ~(FmtSign|FmtSpace);
+		break;
+	}
+#endif
 	if(f->r == 'p'){
 		u = (ulong)va_arg(f->args, void*);
 		f->r = 'x';
@@ -356,6 +383,8 @@ _ifmt(Fmt *f)
 	conv = "0123456789abcdef";
 	switch(f->r){
 	case 'd':
+	case 'i':
+	case 'u':
 		base = 10;
 		break;
 	case 'x':
@@ -426,7 +455,7 @@ _ifmt(Fmt *f)
 				n++;
 		}
 	}
-	if((fl & FmtZero) && !(fl & FmtLeft)){
+	if((fl & FmtZero) && !(fl & (FmtLeft|FmtPrec))){
 		for(w = f->width; n < w && p > buf+3; n++)
 			*p-- = '0';
 		f->width = 0;
@@ -444,11 +473,11 @@ _ifmt(Fmt *f)
 	else if(fl & FmtSpace)
 		*p-- = ' ';
 	f->flags &= ~FmtPrec;
-	return _fmtcpy(f, p + 1, n, n);
+	return __fmtcpy(f, p + 1, n, n);
 }
 
 int
-_countfmt(Fmt *f)
+__countfmt(Fmt *f)
 {
 	void *p;
 	ulong fl;
@@ -470,7 +499,7 @@ _countfmt(Fmt *f)
 }
 
 int
-_flagfmt(Fmt *f)
+__flagfmt(Fmt *f)
 {
 	switch(f->r){
 	case ',':
@@ -496,6 +525,9 @@ _flagfmt(Fmt *f)
 			f->flags |= FmtByte;
 		f->flags |= FmtShort;
 		break;
+	case 'L':
+		f->flags |= FmtLDouble;
+		break;
 	case 'l':
 		if(f->flags & FmtLong)
 			f->flags |= FmtVLong;
@@ -507,7 +539,7 @@ _flagfmt(Fmt *f)
 
 /* default error format */
 int
-_badfmt(Fmt *f)
+__badfmt(Fmt *f)
 {
 	char x[3];
 
@@ -515,6 +547,6 @@ _badfmt(Fmt *f)
 	x[1] = f->r;
 	x[2] = '%';
 	f->prec = 3;
-	_fmtcpy(f, x, 3, 3);
+	__fmtcpy(f, (const void*)x, 3, 3);
 	return 0;
 }
diff --git a/libc/dorfmt.c b/libc/dorfmt.c
index 582c4ac..034dea1 100644
--- a/libc/dorfmt.c
+++ b/libc/dorfmt.c
@@ -1,11 +1,26 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 /* format the output into f->to and return the number of characters fmted  */
 
 int
-dorfmt(Fmt *f, Rune *fmt)
+dorfmt(Fmt *f, const Rune *fmt)
 {
 	Rune *rt, *rs;
 	int r;
@@ -38,7 +53,7 @@ dorfmt(Fmt *f, Rune *fmt)
 			f->stop = s;
 		}
 
-		fmt = _fmtdispatch(f, fmt, 1);
+		fmt = __fmtdispatch(f, (Rune*)fmt, 1);
 		if(fmt == nil)
 			return -1;
 	}
diff --git a/libc/errfmt.c b/libc/errfmt.c
index 5b29b16..b0eae73 100644
--- a/libc/errfmt.c
+++ b/libc/errfmt.c
@@ -1,12 +1,28 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <errno.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 int
-errfmt(Fmt *f)
+__errfmt(Fmt *f)
 {
-	char buf[ERRMAX];
+	char *s;
 
-	rerrstr(buf, sizeof buf);
-	return _fmtcpy(f, buf, utflen(buf), strlen(buf));
+	s = strerror(errno);
+	return fmtstrcpy(f, s);
 }
diff --git a/libc/fltfmt.c b/libc/fltfmt.c
index 80ab472..14ad867 100644
--- a/libc/fltfmt.c
+++ b/libc/fltfmt.c
@@ -1,15 +1,97 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdio.h>
+#include <math.h>
+#include <float.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <stdarg.h>
 #include <ctype.h>
+#include <fmt.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 enum
 {
 	FDIGIT	= 30,
 	FDEFLT	= 6,
-	NSIGNIF	= 17,
+	NSIGNIF	= 17
 };
 
+/*
+ * first few powers of 10, enough for about 1/2 of the
+ * total space for doubles.
+ */
+static double pows10[] =
+{
+	  1e0,   1e1,   1e2,   1e3,   1e4,   1e5,   1e6,   1e7,   1e8,   1e9,  
+	 1e10,  1e11,  1e12,  1e13,  1e14,  1e15,  1e16,  1e17,  1e18,  1e19,  
+	 1e20,  1e21,  1e22,  1e23,  1e24,  1e25,  1e26,  1e27,  1e28,  1e29,  
+	 1e30,  1e31,  1e32,  1e33,  1e34,  1e35,  1e36,  1e37,  1e38,  1e39,  
+	 1e40,  1e41,  1e42,  1e43,  1e44,  1e45,  1e46,  1e47,  1e48,  1e49,  
+	 1e50,  1e51,  1e52,  1e53,  1e54,  1e55,  1e56,  1e57,  1e58,  1e59,  
+	 1e60,  1e61,  1e62,  1e63,  1e64,  1e65,  1e66,  1e67,  1e68,  1e69,  
+	 1e70,  1e71,  1e72,  1e73,  1e74,  1e75,  1e76,  1e77,  1e78,  1e79,  
+	 1e80,  1e81,  1e82,  1e83,  1e84,  1e85,  1e86,  1e87,  1e88,  1e89,  
+	 1e90,  1e91,  1e92,  1e93,  1e94,  1e95,  1e96,  1e97,  1e98,  1e99,  
+	1e100, 1e101, 1e102, 1e103, 1e104, 1e105, 1e106, 1e107, 1e108, 1e109, 
+	1e110, 1e111, 1e112, 1e113, 1e114, 1e115, 1e116, 1e117, 1e118, 1e119, 
+	1e120, 1e121, 1e122, 1e123, 1e124, 1e125, 1e126, 1e127, 1e128, 1e129, 
+	1e130, 1e131, 1e132, 1e133, 1e134, 1e135, 1e136, 1e137, 1e138, 1e139, 
+	1e140, 1e141, 1e142, 1e143, 1e144, 1e145, 1e146, 1e147, 1e148, 1e149, 
+	1e150, 1e151, 1e152, 1e153, 1e154, 1e155, 1e156, 1e157, 1e158, 1e159, 
+};
+
+#define  pow10(x)  fmtpow10(x)
+
+static double
+pow10(int n)
+{
+	double d;
+	int neg;
+
+	neg = 0;
+	if(n < 0){
+		if(n < DBL_MIN_10_EXP){
+			return 0.;
+		}
+		neg = 1;
+		n = -n;
+	}else if(n > DBL_MAX_10_EXP){
+		return HUGE_VAL;
+	}
+	if(n < (int)(sizeof(pows10)/sizeof(pows10[0])))
+		d = pows10[n];
+	else{
+		d = pows10[sizeof(pows10)/sizeof(pows10[0]) - 1];
+		for(;;){
+			n -= sizeof(pows10)/sizeof(pows10[0]) - 1;
+			if(n < (int)(sizeof(pows10)/sizeof(pows10[0]))){
+				d *= pows10[n];
+				break;
+			}
+			d *= pows10[sizeof(pows10)/sizeof(pows10[0]) - 1];
+		}
+	}
+	if(neg){
+		return 1./d;
+	}
+	return d;
+}
+
 static int
 xadd(char *a, int n, int v)
 {
@@ -27,7 +109,7 @@ xadd(char *a, int n, int v)
 		*b = '0';
 		v = 1;
 	}
-	*a = '1';	// overflow adding
+	*a = '1';	/* overflow adding */
 	return 1;
 }
 
@@ -46,7 +128,7 @@ xsub(char *a, int n, int v)
 		*b = '9';
 		v = 1;
 	}
-	*a = '9';	// underflow subtracting
+	*a = '9';	/* underflow subtracting */
 	return 1;
 }
 
@@ -291,22 +373,22 @@ found:
 	s2[d] = 0;
 }
 
-int
-_floatfmt(Fmt *fmt, double f)
+static int
+floatfmt(Fmt *fmt, double f)
 {
-	char s[FDIGIT+10];
+	char s[341];		/* precision+exponent+sign+'.'+null */
 
 	xdtoa(fmt, s, f);
 	fmt->flags &= FmtWidth|FmtLeft;
-	_fmtcpy(fmt, s, strlen(s), strlen(s));
+	__fmtcpy(fmt, s, strlen(s), strlen(s));
 	return 0;
 }
 
 int
-_efgfmt(Fmt *f)
+__efgfmt(Fmt *f)
 {
 	double d;
 
 	d = va_arg(f->args, double);
-	return _floatfmt(f, d);
+	return floatfmt(f, d);
 }
diff --git a/libc/fmt.c b/libc/fmt.c
index 5d36dac..642de8c 100644
--- a/libc/fmt.c
+++ b/libc/fmt.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 enum
@@ -16,55 +31,69 @@ struct Convfmt
 
 struct
 {
-	/* lock by calling _fmtlock, _fmtunlock */
+	/* lock by calling __fmtlock, __fmtunlock */
 	int	nfmt;
 	Convfmt	fmt[Maxfmt];
 } fmtalloc;
 
 static Convfmt knownfmt[] = {
-	' ',	_flagfmt,
-	'#',	_flagfmt,
-	'%',	_percentfmt,
-	'+',	_flagfmt,
-	',',	_flagfmt,
-	'-',	_flagfmt,
-	'C',	_runefmt,
-	'E',	_efgfmt,
-	'G',	_efgfmt,
-	'S',	_runesfmt,
-	'X',	_ifmt,
-	'b',	_ifmt,
-	'c',	_charfmt,
-	'd',	_ifmt,
-	'e',	_efgfmt,
-	'f',	_efgfmt,
-	'g',	_efgfmt,
-	'h',	_flagfmt,
-	'l',	_flagfmt,
-	'n',	_countfmt,
-	'o',	_ifmt,
-	'p',	_ifmt,
-/*	'r',	errfmt, */
-	's',	_strfmt,
-	'u',	_flagfmt,
-	'x',	_ifmt,
+	' ',	__flagfmt,
+	'#',	__flagfmt,
+	'%',	__percentfmt,
+	'+',	__flagfmt,
+	',',	__flagfmt,
+	'-',	__flagfmt,
+	'C',	__runefmt,	/* Plan 9 addition */
+	'E',	__efgfmt,
+#ifndef PLAN9PORT
+	'F',	__efgfmt,	/* ANSI only */
+#endif
+	'G',	__efgfmt,
+#ifndef PLAN9PORT
+	'L',	__flagfmt,	/* ANSI only */
+#endif
+	'S',	__runesfmt,	/* Plan 9 addition */
+	'X',	__ifmt,
+	'b',	__ifmt,		/* Plan 9 addition */
+	'c',	__charfmt,
+	'd',	__ifmt,
+	'e',	__efgfmt,
+	'f',	__efgfmt,
+	'g',	__efgfmt,
+	'h',	__flagfmt,
+#ifndef PLAN9PORT
+	'i',	__ifmt,		/* ANSI only */
+#endif
+	'l',	__flagfmt,
+	'n',	__countfmt,
+	'o',	__ifmt,
+	'p',	__ifmt,
+	'r',	__errfmt,
+	's',	__strfmt,
+#ifdef PLAN9PORT
+	'u',	__flagfmt,
+#else
+	'u',	__ifmt,
+#endif
+	'x',	__ifmt,
 	0,	nil,
 };
 
-int	(*doquote)(int);
+
+int	(*fmtdoquote)(int);
 
 /*
- * _fmtlock() must be set
+ * __fmtlock() must be set
  */
 static int
-_fmtinstall(int c, Fmts f)
+__fmtinstall(int c, Fmts f)
 {
 	Convfmt *p, *ep;
 
 	if(c<=0 || c>=65536)
 		return -1;
 	if(!f)
-		f = _badfmt;
+		f = __badfmt;
 
 	ep = &fmtalloc.fmt[fmtalloc.nfmt];
 	for(p=fmtalloc.fmt; p<ep; p++)
@@ -84,13 +113,13 @@ _fmtinstall(int c, Fmts f)
 }
 
 int
-fmtinstall(int c, Fmts f)
+fmtinstall(int c, int (*f)(Fmt*))
 {
 	int ret;
 
-	_fmtlock();
-	ret = _fmtinstall(c, f);
-	_fmtunlock();
+	__fmtlock();
+	ret = __fmtinstall(c, f);
+	__fmtunlock();
 	return ret;
 }
 
@@ -108,20 +137,20 @@ fmtfmt(int c)
 		}
 
 	/* is this a predefined format char? */
-	_fmtlock();
+	__fmtlock();
 	for(p=knownfmt; p->c; p++)
 		if(p->c == c){
-			_fmtinstall(p->c, p->fmt);
-			_fmtunlock();
+			__fmtinstall(p->c, p->fmt);
+			__fmtunlock();
 			return p->fmt;
 		}
-	_fmtunlock();
+	__fmtunlock();
 
-	return _badfmt;
+	return __badfmt;
 }
 
 void*
-_fmtdispatch(Fmt *f, void *fmt, int isrunes)
+__fmtdispatch(Fmt *f, void *fmt, int isrunes)
 {
 	Rune rune, r;
 	int i, n;
@@ -134,7 +163,7 @@ _fmtdispatch(Fmt *f, void *fmt, int isrunes)
 			r = *(Rune*)fmt;
 			fmt = (Rune*)fmt + 1;
 		}else{
-			fmt = (char*)fmt + chartorune(&rune, fmt);
+			fmt = (char*)fmt + chartorune(&rune, (char*)fmt);
 			r = rune;
 		}
 		f->r = r;
@@ -179,6 +208,15 @@ _fmtdispatch(Fmt *f, void *fmt, int isrunes)
 		case '*':
 			i = va_arg(f->args, int);
 			if(i < 0){
+				/*
+				 * negative precision =>
+				 * ignore the precision.
+				 */
+				if(f->flags & FmtPrec){
+					f->flags &= ~FmtPrec;
+					f->prec = 0;
+					continue;
+				}
 				i = -i;
 				f->flags |= FmtLeft;
 			}
diff --git a/libc/fmtdef.h b/libc/fmtdef.h
index d8f3680..5a63f9b 100644
--- a/libc/fmtdef.h
+++ b/libc/fmtdef.h
@@ -1,3 +1,17 @@
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
+ * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+
 /*
  * dofmt -- format to a buffer
  * the number of characters formatted is returned,
@@ -18,33 +32,41 @@ struct Quoteinfo
 	int	nbytesout;	/* number of bytes that will be generated */
 };
 
-void	*_fmtflush(Fmt*, void*, int);
-void	*_fmtdispatch(Fmt*, void*, int);
-int	_floatfmt(Fmt*, double);
-int	_fmtpad(Fmt*, int);
-int	_rfmtpad(Fmt*, int);
-int	_fmtFdFlush(Fmt*);
-
-int	_efgfmt(Fmt*);
-int	_charfmt(Fmt*);
-int	_countfmt(Fmt*);
-int	_flagfmt(Fmt*);
-int	_percentfmt(Fmt*);
-int	_ifmt(Fmt*);
-int	_runefmt(Fmt*);
-int	_runesfmt(Fmt*);
-int	_strfmt(Fmt*);
-int	_badfmt(Fmt*);
-int	_fmtcpy(Fmt*, void*, int, int);
-int	_fmtrcpy(Fmt*, void*, int n);
-
-void	_fmtlock(void);
-void	_fmtunlock(void);
+/* Edit .+1,/^$/ |cfn |grep -v static | grep __ */
+double       __Inf(int sign);
+double       __NaN(void);
+int          __badfmt(Fmt *f);
+int          __charfmt(Fmt *f);
+int          __countfmt(Fmt *f);
+int          __efgfmt(Fmt *fmt);
+int          __errfmt(Fmt *f);
+int          __flagfmt(Fmt *f);
+int          __fmtFdFlush(Fmt *f);
+int          __fmtcpy(Fmt *f, const void *vm, int n, int sz);
+void*        __fmtdispatch(Fmt *f, void *fmt, int isrunes);
+void *       __fmtflush(Fmt *f, void *t, int len);
+void         __fmtlock(void);
+int          __fmtpad(Fmt *f, int n);
+double       __fmtpow10(int n);
+int          __fmtrcpy(Fmt *f, const void *vm, int n);
+void         __fmtunlock(void);
+int          __ifmt(Fmt *f);
+int          __isInf(double d, int sign);
+int          __isNaN(double d);
+int          __needsquotes(char *s, int *quotelenp);
+int          __percentfmt(Fmt *f);
+void         __quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout);
+int          __quotestrfmt(int runesin, Fmt *f);
+int          __rfmtpad(Fmt *f, int n);
+int          __runefmt(Fmt *f);
+int          __runeneedsquotes(Rune *r, int *quotelenp);
+int          __runesfmt(Fmt *f);
+int          __strfmt(Fmt *f);
 
 #define FMTCHAR(f, t, s, c)\
 	do{\
 	if(t + 1 > (char*)s){\
-		t = _fmtflush(f, t, 1);\
+		t = __fmtflush(f, t, 1);\
 		if(t != nil)\
 			s = f->stop;\
 		else\
@@ -56,7 +78,7 @@ void	_fmtunlock(void);
 #define FMTRCHAR(f, t, s, c)\
 	do{\
 	if(t + 1 > (Rune*)s){\
-		t = _fmtflush(f, t, sizeof(Rune));\
+		t = __fmtflush(f, t, sizeof(Rune));\
 		if(t != nil)\
 			s = f->stop;\
 		else\
@@ -70,7 +92,7 @@ void	_fmtunlock(void);
 	Rune _rune;\
 	int _runelen;\
 	if(t + UTFmax > (char*)s && t + (_runelen = runelen(r)) > (char*)s){\
-		t = _fmtflush(f, t, _runelen);\
+		t = __fmtflush(f, t, _runelen);\
 		if(t != nil)\
 			s = f->stop;\
 		else\
@@ -83,3 +105,12 @@ void	_fmtunlock(void);
 		t += runetochar(t, &_rune);\
 	}\
 	}while(0)
+
+#ifdef va_copy
+#	define VA_COPY(a,b) va_copy(a,b)
+#	define VA_END(a) va_end(a)
+#else
+#	define VA_COPY(a,b) (a) = (b)
+#	define VA_END(a)
+#endif
+
diff --git a/libc/fmtfd.c b/libc/fmtfd.c
index db42eba..9f35f02 100644
--- a/libc/fmtfd.c
+++ b/libc/fmtfd.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 /*
@@ -9,7 +24,7 @@
 int
 fmtfdflush(Fmt *f)
 {
-	if(_fmtFdFlush(f) <= 0)
+	if(__fmtFdFlush(f) <= 0)
 		return -1;
 	return f->nfmt;
 }
@@ -24,8 +39,8 @@ fmtfdinit(Fmt *f, int fd, char *buf, int size)
 	f->start = buf;
 	f->to = buf;
 	f->stop = buf + size;
-	f->flush = _fmtFdFlush;
-	f->farg = (void*)fd;
+	f->flush = __fmtFdFlush;
+	f->farg = (void*)(uintptr_t)fd;
 	f->nfmt = 0;
 	return 0;
 }
diff --git a/libc/fmtlock.c b/libc/fmtlock.c
index 02ae963..5c7afbc 100644
--- a/libc/fmtlock.c
+++ b/libc/fmtlock.c
@@ -1,16 +1,27 @@
-#include <u.h>
-#include <libc.h>
-
-static Lock fmtl;
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 void
-_fmtlock(void)
+__fmtlock(void)
 {
-	lock(&fmtl);
 }
 
 void
-_fmtunlock(void)
+__fmtunlock(void)
 {
-	unlock(&fmtl);
 }
diff --git a/libc/fmtprint.c b/libc/fmtprint.c
index 4c858b9..5ba59d3 100644
--- a/libc/fmtprint.c
+++ b/libc/fmtprint.c
@@ -1,8 +1,22 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
-
 /*
  * format a string into the output buffer
  * designed for formats which themselves call fmt,
@@ -17,14 +31,16 @@ fmtprint(Fmt *f, char *fmt, ...)
 	f->flags = 0;
 	f->width = 0;
 	f->prec = 0;
-	va = f->args;
+	VA_COPY(va, f->args);
+	VA_END(f->args);
 	va_start(f->args, fmt);
 	n = dofmt(f, fmt);
 	va_end(f->args);
 	f->flags = 0;
 	f->width = 0;
 	f->prec = 0;
-	f->args = va;
+	VA_COPY(f->args,va);
+	VA_END(va);
 	if(n >= 0)
 		return 0;
 	return n;
diff --git a/libc/fmtquote.c b/libc/fmtquote.c
index 68e3b1f..b6f2e17 100644
--- a/libc/fmtquote.c
+++ b/libc/fmtquote.c
@@ -1,11 +1,26 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 /*
  * How many bytes of output UTF will be produced by quoting (if necessary) this string?
  * How many runes? How much of the input will be consumed?
- * The parameter q is filled in by _quotesetup.
+ * The parameter q is filled in by __quotesetup.
  * The string may be UTF or Runes (s or r).
  * Return count does not include NUL.
  * Terminate the scan at the first of:
@@ -16,7 +31,7 @@
  * nin may be <0 initially, to avoid checking input by count.
  */
 void
-_quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout)
+__quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int runesout)
 {
 	int w;
 	Rune c;
@@ -33,7 +48,7 @@ _quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int ru
 		q->nbytesout = 2;
 		q->nrunesout = 2;
 	}
-	for(; nin!=0; nin-=w){
+	for(; nin!=0; nin--){
 		if(s)
 			w = chartorune(&c, s);
 		else{
@@ -51,7 +66,7 @@ _quotesetup(char *s, Rune *r, int nin, int nout, Quoteinfo *q, int sharp, int ru
 				break;
 		}
 
-		if((c <= L' ') || (c == L'\'') || (doquote!=nil && doquote(c))){
+		if((c <= L' ') || (c == L'\'') || (fmtdoquote!=nil && fmtdoquote(c))){
 			if(!q->quoted){
 				if(runesout){
 					if(1+q->nrunesout+1+1 > nout)	/* no room for quotes */
@@ -108,16 +123,16 @@ qstrfmt(char *sin, Rune *rin, Quoteinfo *q, Fmt *f)
 	w = f->width;
 	fl = f->flags;
 	if(f->runes){
-		if(!(fl & FmtLeft) && _rfmtpad(f, w - q->nrunesout) < 0)
+		if(!(fl & FmtLeft) && __rfmtpad(f, w - q->nrunesout) < 0)
 			return -1;
 	}else{
-		if(!(fl & FmtLeft) && _fmtpad(f, w - q->nbytesout) < 0)
+		if(!(fl & FmtLeft) && __fmtpad(f, w - q->nbytesout) < 0)
 			return -1;
 	}
-	t = f->to;
-	s = f->stop;
-	rt = f->to;
-	rs = f->stop;
+	t = (char*)f->to;
+	s = (char*)f->stop;
+	rt = (Rune*)f->to;
+	rs = (Rune*)f->stop;
 	if(f->runes)
 		FMTRCHAR(f, rt, rs, '\'');
 	else
@@ -152,28 +167,30 @@ qstrfmt(char *sin, Rune *rin, Quoteinfo *q, Fmt *f)
 		USED(rs);
 		f->nfmt += rt - (Rune *)f->to;
 		f->to = rt;
-		if(fl & FmtLeft && _rfmtpad(f, w - q->nrunesout) < 0)
+		if(fl & FmtLeft && __rfmtpad(f, w - q->nrunesout) < 0)
 			return -1;
 	}else{
 		FMTRUNE(f, t, s, '\'');
 		USED(s);
 		f->nfmt += t - (char *)f->to;
 		f->to = t;
-		if(fl & FmtLeft && _fmtpad(f, w - q->nbytesout) < 0)
+		if(fl & FmtLeft && __fmtpad(f, w - q->nbytesout) < 0)
 			return -1;
 	}
 	return 0;
 }
 
 int
-_quotestrfmt(int runesin, Fmt *f)
+__quotestrfmt(int runesin, Fmt *f)
 {
-	int outlen;
+	int nin, outlen;
 	Rune *r;
 	char *s;
 	Quoteinfo q;
 
-	f->flags &= ~FmtPrec;	/* ignored for %q %Q, so disable for %s %S in easy case */
+	nin = -1;
+	if(f->flags&FmtPrec)
+		nin = f->prec;
 	if(runesin){
 		r = va_arg(f->args, Rune *);
 		s = nil;
@@ -182,7 +199,7 @@ _quotestrfmt(int runesin, Fmt *f)
 		r = nil;
 	}
 	if(!s && !r)
-		return _fmtcpy(f, "<nil>", 5, 5);
+		return __fmtcpy(f, (void*)"<nil>", 5, 5);
 
 	if(f->flush)
 		outlen = 0x7FFFFFFF;	/* if we can flush, no output limit */
@@ -191,30 +208,30 @@ _quotestrfmt(int runesin, Fmt *f)
 	else
 		outlen = (char*)f->stop - (char*)f->to;
 
-	_quotesetup(s, r, -1, outlen, &q, f->flags&FmtSharp, f->runes);
+	__quotesetup(s, r, nin, outlen, &q, f->flags&FmtSharp, f->runes);
 //print("bytes in %d bytes out %d runes in %d runesout %d\n", q.nbytesin, q.nbytesout, q.nrunesin, q.nrunesout);
 
 	if(runesin){
 		if(!q.quoted)
-			return _fmtrcpy(f, r, q.nrunesin);
+			return __fmtrcpy(f, r, q.nrunesin);
 		return qstrfmt(nil, r, &q, f);
 	}
 
 	if(!q.quoted)
-		return _fmtcpy(f, s, q.nrunesin, q.nbytesin);
+		return __fmtcpy(f, s, q.nrunesin, q.nbytesin);
 	return qstrfmt(s, nil, &q, f);
 }
 
 int
 quotestrfmt(Fmt *f)
 {
-	return _quotestrfmt(0, f);
+	return __quotestrfmt(0, f);
 }
 
 int
 quoterunestrfmt(Fmt *f)
 {
-	return _quotestrfmt(1, f);
+	return __quotestrfmt(1, f);
 }
 
 void
@@ -225,22 +242,22 @@ quotefmtinstall(void)
 }
 
 int
-_needsquotes(char *s, int *quotelenp)
+__needsquotes(char *s, int *quotelenp)
 {
 	Quoteinfo q;
 
-	_quotesetup(s, nil, -1, 0x7FFFFFFF, &q, 0, 0);
+	__quotesetup(s, nil, -1, 0x7FFFFFFF, &q, 0, 0);
 	*quotelenp = q.nbytesout;
 
 	return q.quoted;
 }
 
 int
-_runeneedsquotes(Rune *r, int *quotelenp)
+__runeneedsquotes(Rune *r, int *quotelenp)
 {
 	Quoteinfo q;
 
-	_quotesetup(nil, r, -1, 0x7FFFFFFF, &q, 0, 0);
+	__quotesetup(nil, r, -1, 0x7FFFFFFF, &q, 0, 0);
 	*quotelenp = q.nrunesout;
 
 	return q.quoted;
diff --git a/libc/fmtrune.c b/libc/fmtrune.c
index e2db137..b1ddd3b 100644
--- a/libc/fmtrune.c
+++ b/libc/fmtrune.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 int
@@ -10,12 +25,12 @@ fmtrune(Fmt *f, int r)
 	int n;
 
 	if(f->runes){
-		rt = f->to;
+		rt = (Rune*)f->to;
 		FMTRCHAR(f, rt, f->stop, r);
 		f->to = rt;
 		n = 1;
 	}else{
-		t = f->to;
+		t = (char*)f->to;
 		FMTRUNE(f, t, f->stop, r);
 		n = t - (char*)f->to;
 		f->to = t;
diff --git a/libc/fmtstr.c b/libc/fmtstr.c
index 6f58213..a5f8f8d 100644
--- a/libc/fmtstr.c
+++ b/libc/fmtstr.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdlib.h>
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 char*
 fmtstrflush(Fmt *f)
@@ -7,5 +23,5 @@ fmtstrflush(Fmt *f)
 	if(f->start == nil)
 		return nil;
 	*(char*)f->to = '\0';
-	return f->start;
+	return (char*)f->start;
 }
diff --git a/libc/fmtvprint.c b/libc/fmtvprint.c
index 1d6493e..cb7ffbe 100644
--- a/libc/fmtvprint.c
+++ b/libc/fmtvprint.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
 #include "fmtdef.h"
 
 
@@ -17,13 +32,16 @@ fmtvprint(Fmt *f, char *fmt, va_list args)
 	f->flags = 0;
 	f->width = 0;
 	f->prec = 0;
-	va = f->args;
-	f->args = args;
+	VA_COPY(va,f->args);
+	VA_END(f->args);
+	VA_COPY(f->args,args);
 	n = dofmt(f, fmt);
 	f->flags = 0;
 	f->width = 0;
 	f->prec = 0;
-	f->args = va;
+	VA_END(f->args);
+	VA_COPY(f->args,va);
+	VA_END(va);
 	if(n >= 0)
 		return 0;
 	return n;
diff --git a/libc/fprint.c b/libc/fprint.c
index b1376a0..043202c 100644
--- a/libc/fprint.c
+++ b/libc/fprint.c
@@ -1,5 +1,20 @@
-#include	<u.h>
-#include	<libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 fprint(int fd, char *fmt, ...)
diff --git a/libc/nan64.c b/libc/nan64.c
index 45a1921..6e355a2 100644
--- a/libc/nan64.c
+++ b/libc/nan64.c
@@ -5,45 +5,59 @@
  * same byte ordering.
  */
 
-#include <u.h>
-#include <libc.h>
-#include "nan.h"
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
-// typedef unsigned long long uvlong;
-// typedef unsigned long ulong;
+#if defined (__APPLE__) || (__powerpc__)
+#define _NEEDLL
+#endif
 
-static uvlong uvnan    = 0x7FF0000000000001ULL;
-static uvlong uvinf    = 0x7FF0000000000000ULL;
-static uvlong uvneginf = 0xFFF0000000000000ULL;
+static uvlong uvnan    = ((uvlong)0x7FF00000<<32)|0x00000001;
+static uvlong uvinf    = ((uvlong)0x7FF00000<<32)|0x00000000;
+static uvlong uvneginf = ((uvlong)0xFFF00000<<32)|0x00000000;
 
 double
 __NaN(void)
 {
-	return *(double*)(void*)&uvnan;
+	uvlong *p;
+
+	/* gcc complains about "return *(double*)&uvnan;" */
+	p = &uvnan;
+	return *(double*)p;
 }
 
 int
 __isNaN(double d)
 {
-	uvlong x = *(uvlong*)(void*)&d;
+	uvlong x;
+	double *p;
+
+	p = &d;
+	x = *(uvlong*)p;
 	return (ulong)(x>>32)==0x7FF00000 && !__isInf(d, 0);
 }
 
 double
 __Inf(int sign)
 {
+	uvlong *p;
+
 	if(sign < 0)
-		return *(double*)(void*)&uvinf;
+		p = &uvinf;
 	else
-		return *(double*)(void*)&uvneginf;
+		p = &uvneginf;
+	return *(double*)p;
 }
 
 int
 __isInf(double d, int sign)
 {
 	uvlong x;
+	double *p;
 
-	x = *(uvlong*)(void*)&d;
+	p = &d;
+	x = *(uvlong*)p;
 	if(sign == 0)
 		return x==uvinf || x==uvneginf;
 	else if(sign > 0)
@@ -51,5 +65,3 @@ __isInf(double d, int sign)
 	else
 		return x==uvneginf;
 }
-
-
diff --git a/libc/pow10.c b/libc/pow10.c
index 7e09f3c..5d578f9 100644
--- a/libc/pow10.c
+++ b/libc/pow10.c
@@ -1,5 +1,21 @@
-#include	<u.h>
-#include	<libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 /*
  * this table might overflow 127-bit exponent representations.
@@ -9,41 +25,33 @@
  * the presumption is that C converts fp numbers better
  * than multipication of lower powers of 10.
  */
+
 static
 double	tab[] =
 {
-	1.0e0,  1.0e1,  1.0e2,  1.0e3,  1.0e4,  1.0e5,  1.0e6,  1.0e7,  1.0e8,  1.0e9, 
-	1.0e10, 1.0e11, 1.0e12, 1.0e13, 1.0e14, 1.0e15, 1.0e16, 1.0e17, 1.0e18, 1.0e19, 
-	1.0e20, 1.0e21, 1.0e22, 1.0e23, 1.0e24, 1.0e25, 1.0e26, 1.0e27, 1.0e28, 1.0e29, 
-	1.0e30, 1.0e31, 1.0e32, 1.0e33, 1.0e34, 1.0e35, 1.0e36, 1.0e37, 1.0e38, 1.0e39, 
-	1.0e40, 1.0e41, 1.0e42, 1.0e43, 1.0e44, 1.0e45, 1.0e46, 1.0e47, 1.0e48, 1.0e49, 
-	1.0e50, 1.0e51, 1.0e52, 1.0e53, 1.0e54, 1.0e55, 1.0e56, 1.0e57, 1.0e58, 1.0e59, 
-	1.0e60, 1.0e61, 1.0e62, 1.0e63, 1.0e64, 1.0e65, 1.0e66, 1.0e67, 1.0e68, 1.0e69, 
-	1.0e70, 1.0e71, 1.0e72, 1.0e73, 1.0e74, 1.0e75, 1.0e76, 1.0e77, 1.0e78, 1.0e79, 
-	1.0e80, 1.0e81, 1.0e82, 1.0e83, 1.0e84, 1.0e85, 1.0e86, 1.0e87, 1.0e88, 1.0e89, 
-	1.0e90, 1.0e91, 1.0e92, 1.0e93, 1.0e94, 1.0e95, 1.0e96, 1.0e97, 1.0e98, 1.0e99, 
-	1.0e100,1.0e101,1.0e102,1.0e103,1.0e104,1.0e105,1.0e106,1.0e107,1.0e108,1.0e109,
-	1.0e110,1.0e111,1.0e112,1.0e113,1.0e114,1.0e115,1.0e116,1.0e117,1.0e118,1.0e119,
-	1.0e120,1.0e121,1.0e122,1.0e123,1.0e124,1.0e125,1.0e126,1.0e127,1.0e128,1.0e129,
-	1.0e130,1.0e131,1.0e132,1.0e133,1.0e134,1.0e135,1.0e136,1.0e137,1.0e138,1.0e139,
-	1.0e140,1.0e141,1.0e142,1.0e143,1.0e144,1.0e145,1.0e146,1.0e147,1.0e148,1.0e149,
-	1.0e150,1.0e151,1.0e152,1.0e153,1.0e154,1.0e155,1.0e156,1.0e157,1.0e158,1.0e159,
+	1.0e0, 1.0e1, 1.0e2, 1.0e3, 1.0e4, 1.0e5, 1.0e6, 1.0e7, 1.0e8, 1.0e9,
+	1.0e10,1.0e11,1.0e12,1.0e13,1.0e14,1.0e15,1.0e16,1.0e17,1.0e18,1.0e19,
+	1.0e20,1.0e21,1.0e22,1.0e23,1.0e24,1.0e25,1.0e26,1.0e27,1.0e28,1.0e29,
+	1.0e30,1.0e31,1.0e32,1.0e33,1.0e34,1.0e35,1.0e36,1.0e37,1.0e38,1.0e39,
+	1.0e40,1.0e41,1.0e42,1.0e43,1.0e44,1.0e45,1.0e46,1.0e47,1.0e48,1.0e49,
+	1.0e50,1.0e51,1.0e52,1.0e53,1.0e54,1.0e55,1.0e56,1.0e57,1.0e58,1.0e59,
+	1.0e60,1.0e61,1.0e62,1.0e63,1.0e64,1.0e65,1.0e66,1.0e67,1.0e68,1.0e69,
 };
 
 double
-pow10(int n)
+__fmtpow10(int n)
 {
 	int m;
 
 	if(n < 0) {
 		n = -n;
-		if(n < sizeof(tab)/sizeof(tab[0]))
+		if(n < (int)(sizeof(tab)/sizeof(tab[0])))
 			return 1/tab[n];
 		m = n/2;
-		return 1/(pow10(m) * pow10(n-m));
+		return __fmtpow10(-m) * __fmtpow10(m-n);
 	}
-	if(n < sizeof(tab)/sizeof(tab[0]))
+	if(n < (int)(sizeof(tab)/sizeof(tab[0])))
 		return tab[n];
 	m = n/2;
-	return pow10(m) * pow10(n-m);
+	return __fmtpow10(m) * __fmtpow10(n-m);
 }
diff --git a/libc/print.c b/libc/print.c
index fdbb522..d038cee 100644
--- a/libc/print.c
+++ b/libc/print.c
@@ -1,5 +1,20 @@
-#include	<u.h>
-#include	<libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 print(char *fmt, ...)
diff --git a/libc/runefmtstr.c b/libc/runefmtstr.c
index 9ce9c13..e17bc16 100644
--- a/libc/runefmtstr.c
+++ b/libc/runefmtstr.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <stdlib.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 Rune*
 runefmtstrflush(Fmt *f)
diff --git a/libc/runeseprint.c b/libc/runeseprint.c
index 77a761e..8e01c07 100644
--- a/libc/runeseprint.c
+++ b/libc/runeseprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 Rune*
 runeseprint(Rune *buf, Rune *e, char *fmt, ...)
diff --git a/libc/runesmprint.c b/libc/runesmprint.c
index 1f8b220..03143a9 100644
--- a/libc/runesmprint.c
+++ b/libc/runesmprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 Rune*
 runesmprint(char *fmt, ...)
diff --git a/libc/runesnprint.c b/libc/runesnprint.c
index ac15ec0..2e6ad6c 100644
--- a/libc/runesnprint.c
+++ b/libc/runesnprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 runesnprint(Rune *buf, int len, char *fmt, ...)
diff --git a/libc/runesprint.c b/libc/runesprint.c
index 5eca8cd..1dad4df 100644
--- a/libc/runesprint.c
+++ b/libc/runesprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 runesprint(Rune *buf, char *fmt, ...)
diff --git a/libc/runevseprint.c b/libc/runevseprint.c
index 43c601e..2359c81 100644
--- a/libc/runevseprint.c
+++ b/libc/runevseprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 Rune*
 runevseprint(Rune *buf, Rune *e, char *fmt, va_list args)
@@ -15,9 +31,10 @@ runevseprint(Rune *buf, Rune *e, char *fmt, va_list args)
 	f.flush = nil;
 	f.farg = nil;
 	f.nfmt = 0;
-	f.args = args;
+	VA_COPY(f.args,args);
 	dofmt(&f, fmt);
+	VA_END(f.args);
 	*(Rune*)f.to = '\0';
-	return f.to;
+	return (Rune*)f.to;
 }
 
diff --git a/libc/runevsmprint.c b/libc/runevsmprint.c
index 41326dd..f83dce2 100644
--- a/libc/runevsmprint.c
+++ b/libc/runevsmprint.c
@@ -1,6 +1,32 @@
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+/*
+ * Plan 9 port version must include libc.h in order to 
+ * get Plan 9 debugging malloc, which sometimes returns
+ * different pointers than the standard malloc. 
+ */
+#ifdef PLAN9PORT
 #include <u.h>
 #include <libc.h>
 #include "fmtdef.h"
+#else
+#include <stdlib.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
+#endif
 
 static int
 runeFmtStrFlush(Fmt *f)
@@ -10,9 +36,9 @@ runeFmtStrFlush(Fmt *f)
 
 	if(f->start == nil)
 		return 0;
-	n = (int)f->farg;
+	n = (uintptr)f->farg;
 	n *= 2;
-	s = f->start;
+	s = (Rune*)f->start;
 	f->start = realloc(s, sizeof(Rune)*n);
 	if(f->start == nil){
 		f->farg = nil;
@@ -21,7 +47,7 @@ runeFmtStrFlush(Fmt *f)
 		free(s);
 		return 0;
 	}
-	f->farg = (void*)n;
+	f->farg = (void*)(uintptr)n;
 	f->to = (Rune*)f->start + ((Rune*)f->to - s);
 	f->stop = (Rune*)f->start + n - 1;
 	return 1;
@@ -41,7 +67,7 @@ runefmtstrinit(Fmt *f)
 	f->to = f->start;
 	f->stop = (Rune*)f->start + n - 1;
 	f->flush = runeFmtStrFlush;
-	f->farg = (void*)n;
+	f->farg = (void*)(uintptr)n;
 	f->nfmt = 0;
 	return 0;
 }
@@ -57,8 +83,9 @@ runevsmprint(char *fmt, va_list args)
 
 	if(runefmtstrinit(&f) < 0)
 		return nil;
-	f.args = args;
+	VA_COPY(f.args,args);
 	n = dofmt(&f, fmt);
+	VA_END(f.args);
 	if(f.start == nil)
 		return nil;
 	if(n < 0){
@@ -66,5 +93,5 @@ runevsmprint(char *fmt, va_list args)
 		return nil;
 	}
 	*(Rune*)f.to = '\0';
-	return f.start;
+	return (Rune*)f.start;
 }
diff --git a/libc/runevsnprint.c b/libc/runevsnprint.c
index 61fe4af..431868a 100644
--- a/libc/runevsnprint.c
+++ b/libc/runevsnprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 runevsnprint(Rune *buf, int len, char *fmt, va_list args)
@@ -15,8 +31,9 @@ runevsnprint(Rune *buf, int len, char *fmt, va_list args)
 	f.flush = nil;
 	f.farg = nil;
 	f.nfmt = 0;
-	f.args = args;
+	VA_COPY(f.args,args);
 	dofmt(&f, fmt);
+	VA_END(f.args);
 	*(Rune*)f.to = '\0';
 	return (Rune*)f.to - buf;
 }
diff --git a/libc/seprint.c b/libc/seprint.c
index 519c1aa..38bdf5f 100644
--- a/libc/seprint.c
+++ b/libc/seprint.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 char*
 seprint(char *buf, char *e, char *fmt, ...)
diff --git a/libc/smprint.c b/libc/smprint.c
index bc1b545..f46c964 100644
--- a/libc/smprint.c
+++ b/libc/smprint.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 char*
 smprint(char *fmt, ...)
diff --git a/libc/snprint.c b/libc/snprint.c
index 8a46813..17ce0e2 100644
--- a/libc/snprint.c
+++ b/libc/snprint.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 snprint(char *buf, int len, char *fmt, ...)
diff --git a/libc/sprint.c b/libc/sprint.c
index 2da6d92..1ab5ce6 100644
--- a/libc/sprint.c
+++ b/libc/sprint.c
@@ -1,14 +1,39 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include <fmt.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 sprint(char *buf, char *fmt, ...)
 {
 	int n;
+	uint len;
 	va_list args;
 
+	len = 1<<30;  /* big number, but sprint is deprecated anyway */
+	/*
+	 * on PowerPC, the stack is near the top of memory, so
+	 * we must be sure not to overflow a 32-bit pointer.
+	 */
+	if(buf+len < buf)
+		len = -(uintptr)buf-1;
+
 	va_start(args, fmt);
-	n = vsnprint(buf, 65536, fmt, args);	/* big number, but sprint is deprecated anyway */
+	n = vsnprint(buf, len, fmt, args);
 	va_end(args);
 	return n;
 }
diff --git a/libc/strtod.c b/libc/strtod.c
index 6fb7879..1621483 100644
--- a/libc/strtod.c
+++ b/libc/strtod.c
@@ -1,6 +1,36 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdlib.h>
+#include <math.h>
 #include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
+
+static ulong
+umuldiv(ulong a, ulong b, ulong c)
+{
+	double d;
+
+	d = ((double)a * (double)b) / (double)c;
+	if(d >= 4294967295.)
+		d = 4294967295.;
+	return (ulong)d;
+}
 
 /*
  * This routine will convert to arbitrary precision
@@ -17,46 +47,34 @@
  */
 enum
 {
-	Nbits	= 28,				// bits safely represented in a ulong
-	Nmant	= 53,				// bits of precision required
-	Bias		= 1022,
-	Prec	= (Nmant+Nbits+1)/Nbits,	// words of Nbits each to represent mantissa
-	Sigbit	= 1<<(Prec*Nbits-Nmant),	// first significant bit of Prec-th word
+	Nbits	= 28,				/* bits safely represented in a ulong */
+	Nmant	= 53,				/* bits of precision required */
+	Prec	= (Nmant+Nbits+1)/Nbits,	/* words of Nbits each to represent mantissa */
+	Sigbit	= 1<<(Prec*Nbits-Nmant),	/* first significant bit of Prec-th word */
 	Ndig	= 1500,
 	One	= (ulong)(1<<Nbits),
 	Half	= (ulong)(One>>1),
 	Maxe	= 310,
-	Fsign	= 1<<0,		// found -
-	Fesign	= 1<<1,		// found e-
-	Fdpoint	= 1<<2,		// found .
 
-	S0	= 0,		// _		_S0	+S1	#S2	.S3
-	S1,			// _+		#S2	.S3
-	S2,			// _+#		#S2	.S4	eS5
-	S3,			// _+.		#S4
-	S4,			// _+#.#	#S4	eS5
-	S5,			// _+#.#e	+S6	#S7
-	S6,			// _+#.#e+	#S7
-	S7,			// _+#.#e+#	#S7
+	Fsign	= 1<<0,		/* found - */
+	Fesign	= 1<<1,		/* found e- */
+	Fdpoint	= 1<<2,		/* found . */
+
+	S0	= 0,		/* _		_S0	+S1	#S2	.S3 */
+	S1,			/* _+		#S2	.S3 */
+	S2,			/* _+#		#S2	.S4	eS5 */
+	S3,			/* _+.		#S4 */
+	S4,			/* _+#.#	#S4	eS5 */
+	S5,			/* _+#.#e	+S6	#S7 */
+	S6,			/* _+#.#e+	#S7 */
+	S7,			/* _+#.#e+#	#S7 */
 };
 
-static ulong
-umuldiv(ulong a, ulong b, ulong c)
-{
-	double d;
-
-	d = ((double)a * (double)b) / (double)c;
-	if(d >= 4294967295.)
-		d = 4294967295.;
-	return d;
-}
-
 static	int	xcmp(char*, char*);
 static	int	fpcmp(char*, ulong*);
 static	void	frnorm(ulong*);
 static	void	divascii(char*, int*, int*, int*);
 static	void	mulascii(char*, int*, int*, int*);
-static	void	divby(char*, int*, int);
 
 typedef	struct	Tab	Tab;
 struct	Tab
@@ -67,20 +85,20 @@ struct	Tab
 };
 
 double
-strtod(char *as, char **aas)
+fmtstrtod(const char *as, char **aas)
 {
-	int na, ona, ex, dp, bp, c, i, flag, state;
-	ulong low[Prec], hig[Prec], mid[Prec], num, den;
+	int na, ex, dp, bp, c, i, flag, state;
+	ulong low[Prec], hig[Prec], mid[Prec];
 	double d;
 	char *s, a[Ndig];
 
-	flag = 0;	// Fsign, Fesign, Fdpoint
-	na = 0;		// number of digits of a[]
-	dp = 0;		// na of decimal point
-	ex = 0;		// exonent
+	flag = 0;	/* Fsign, Fesign, Fdpoint */
+	na = 0;		/* number of digits of a[] */
+	dp = 0;		/* na of decimal point */
+	ex = 0;		/* exonent */
 
 	state = S0;
-	for(s=as;; s++) {
+	for(s=(char*)as;; s++) {
 		c = *s;
 		if(c >= '0' && c <= '9') {
 			switch(state) {
@@ -131,7 +149,7 @@ strtod(char *as, char **aas)
 			if(state == S5)
 				state = S6;
 			else
-				break;	// syntax
+				break;	/* syntax */
 			continue;
 		case '.':
 			flag |= Fdpoint;
@@ -179,12 +197,12 @@ strtod(char *as, char **aas)
 		}
 	case S3:
 		if(aas != nil)
-			*aas = as;
-		goto ret0;	// no digits found
+			*aas = (char*)as;
+		goto ret0;	/* no digits found */
 	case S6:
-		s--;		// back over +-
+		s--;		/* back over +- */
 	case S5:
-		s--;		// back over e
+		s--;		/* back over e */
 		break;
 	}
 	if(aas != nil)
@@ -194,55 +212,41 @@ strtod(char *as, char **aas)
 	while(na > 0 && a[na-1] == '0')
 		na--;
 	if(na == 0)
-		goto ret0;	// zero
+		goto ret0;	/* zero */
 	a[na] = 0;
 	if(!(flag & Fdpoint))
 		dp = na;
 	if(flag & Fesign)
 		ex = -ex;
 	dp += ex;
-	if(dp < -Maxe-Nmant/3)	/* actually -Nmant*log(2)/log(10), but Nmant/3 close enough */
-		goto ret0;	// underflow by exp
-	else
+	if(dp < -Maxe){
+		errno = ERANGE;
+		goto ret0;	/* underflow by exp */
+	} else
 	if(dp > +Maxe)
-		goto retinf;	// overflow by exp
+		goto retinf;	/* overflow by exp */
 
 	/*
 	 * normalize the decimal ascii number
 	 * to range .[5-9][0-9]* e0
 	 */
-	bp = 0;		// binary exponent
+	bp = 0;		/* binary exponent */
 	while(dp > 0)
 		divascii(a, &na, &dp, &bp);
 	while(dp < 0 || a[0] < '5')
 		mulascii(a, &na, &dp, &bp);
-	a[na] = 0;
-
-	/*
-	 * very small numbers are represented using
-	 * bp = -Bias+1.  adjust accordingly.
-	 */
-	if(bp < -Bias+1){
-		ona = na;
-		divby(a, &na, -bp-Bias+1);
-		if(na < ona){
-			memmove(a+ona-na, a, na);
-			memset(a, '0', ona-na);
-			na = ona;
-		}
-		a[na] = 0;
-		bp = -Bias+1;
-	}
 
 	/* close approx by naive conversion */
-	num = 0;
-	den = 1;
-	for(i=0; i<9 && (c=a[i]); i++) {
-		num = num*10 + (c-'0');
-		den *= 10;
+	mid[0] = 0;
+	mid[1] = 1;
+	for(i=0; c=a[i]; i++) {
+		mid[0] = mid[0]*10 + (c-'0');
+		mid[1] = mid[1]*10;
+		if(i >= 8)
+			break;
 	}
-	low[0] = umuldiv(num, One, den);
-	hig[0] = umuldiv(num+1, One, den);
+	low[0] = umuldiv(mid[0], One, mid[1]);
+	hig[0] = umuldiv(mid[0]+1, One, mid[1]);
 	for(i=1; i<Prec; i++) {
 		low[i] = 0;
 		hig[i] = One-1;
@@ -271,7 +275,7 @@ strtod(char *as, char **aas)
 					low[i] = mid[i];
 				}
 			if(c)
-				break;	// between mid and hig
+				break;	/* between mid and hig */
 			continue;
 		}
 		if(c < 0) {
@@ -284,7 +288,7 @@ strtod(char *as, char **aas)
 		c = mid[Prec-1] & (Sigbit-1);
 		if(c == Sigbit/2 && (mid[Prec-1]&Sigbit) == 0)
 			mid[Prec-1] -= c;
-		break;	// exactly mid
+		break;	/* exactly mid */
 	}
 
 	/* normal rounding applies */
@@ -294,13 +298,7 @@ strtod(char *as, char **aas)
 		mid[Prec-1] += Sigbit;
 		frnorm(mid);
 	}
-	d = 0;
-	for(i=0; i<Prec; i++)
-		d = d*One + mid[i];
-	if(flag & Fsign)
-		d = -d;
-	d = ldexp(d, bp - Prec*Nbits);
-	return d;
+	goto out;
 
 ret0:
 	return 0;
@@ -309,9 +307,24 @@ retnan:
 	return __NaN();
 
 retinf:
+	/*
+	 * Unix strtod requires these.  Plan 9 would return Inf(0) or Inf(-1). */
+	errno = ERANGE;
 	if(flag & Fsign)
-		return __Inf(-1);
-	return __Inf(+1);
+		return -HUGE_VAL;
+	return HUGE_VAL;
+
+out:
+	d = 0;
+	for(i=0; i<Prec; i++)
+		d = d*One + mid[i];
+	if(flag & Fsign)
+		d = -d;
+	d = ldexp(d, bp - Prec*Nbits);
+	if(d == 0){	/* underflow */
+		errno = ERANGE;
+	}
+	return d;
 }
 
 static void
@@ -364,11 +377,10 @@ fpcmp(char *a, ulong* f)
 		a++;
 	cont:;
 	}
-	return 0;
 }
 
 static void
-_divby(char *a, int *na, int b)
+divby(char *a, int *na, int b)
 {
 	int n, c;
 	char *p;
@@ -410,18 +422,6 @@ xx:
 	*p = 0;
 }
 
-static void
-divby(char *a, int *na, int b)
-{
-	while(b > 9){
-		_divby(a, na, 9);
-		a[*na] = 0;
-		b -= 9;
-	}
-	if(b > 0)
-		_divby(a, na, b);
-}
-
 static	Tab	tab1[] =
 {
 	 1,  0, "",
@@ -443,8 +443,8 @@ divascii(char *a, int *na, int *dp, int *bp)
 	Tab *t;
 
 	d = *dp;
-	if(d >= nelem(tab1))
-		d = nelem(tab1)-1;
+	if(d >= (int)(nelem(tab1)))
+		d = (int)(nelem(tab1))-1;
 	t = tab1 + d;
 	b = t->bp;
 	if(memcmp(a, t->cmp, t->siz) > 0)
@@ -483,7 +483,7 @@ mulby(char *a, char *p, char *q, int b)
 
 static	Tab	tab2[] =
 {
-	 1,  1, "",				// dp = 0-0
+	 1,  1, "",				/* dp = 0-0 */
 	 3,  3, "125",
 	 6,  5, "15625",
 	 9,  7, "1953125",
@@ -492,7 +492,7 @@ static	Tab	tab2[] =
 	19, 14, "19073486328125",
 	23, 17, "11920928955078125",
 	26, 19, "1490116119384765625",
-	27, 19, "7450580596923828125",		// dp 8-9
+	27, 19, "7450580596923828125",		/* dp 8-9 */
 };
 
 static void
@@ -503,8 +503,8 @@ mulascii(char *a, int *na, int *dp, int *bp)
 	Tab *t;
 
 	d = -*dp;
-	if(d >= nelem(tab2))
-		d = nelem(tab2)-1;
+	if(d >= (int)(nelem(tab2)))
+		d = (int)(nelem(tab2))-1;
 	t = tab2 + d;
 	b = t->bp;
 	if(memcmp(a, t->cmp, t->siz) < 0)
diff --git a/libc/vfprint.c b/libc/vfprint.c
index 9312915..e5a7da3 100644
--- a/libc/vfprint.c
+++ b/libc/vfprint.c
@@ -1,22 +1,20 @@
-#include <u.h>
-#include <libc.h>
-#include "fmtdef.h"
-
 /*
- * generic routine for flushing a formatting buffer
- * to a file descriptor
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
  */
-int
-_fmtFdFlush(Fmt *f)
-{
-	int n;
-
-	n = (char*)f->to - (char*)f->start;
-	if(n && write((int)f->farg, f->start, n) != n)
-		return 0;
-	f->to = f->start;
-	return 1;
-}
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 vfprint(int fd, char *fmt, va_list args)
@@ -26,9 +24,10 @@ vfprint(int fd, char *fmt, va_list args)
 	int n;
 
 	fmtfdinit(&f, fd, buf, sizeof(buf));
-	f.args = args;
+	VA_COPY(f.args,args);
 	n = dofmt(&f, fmt);
-	if(n > 0 && _fmtFdFlush(&f) == 0)
+	VA_END(f.args);
+	if(n > 0 && __fmtFdFlush(&f) == 0)
 		return -1;
 	return n;
 }
diff --git a/libc/vseprint.c b/libc/vseprint.c
index 72d02f7..b6dfee6 100644
--- a/libc/vseprint.c
+++ b/libc/vseprint.c
@@ -1,5 +1,20 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 char*
 vseprint(char *buf, char *e, char *fmt, va_list args)
@@ -12,12 +27,13 @@ vseprint(char *buf, char *e, char *fmt, va_list args)
 	f.start = buf;
 	f.to = buf;
 	f.stop = e - 1;
-	f.flush = nil;
+	f.flush = 0;
 	f.farg = nil;
 	f.nfmt = 0;
-	f.args = args;
+	VA_COPY(f.args,args);
 	dofmt(&f, fmt);
+	VA_END(f.args);
 	*(char*)f.to = '\0';
-	return f.to;
+	return (char*)f.to;
 }
 
diff --git a/libc/vsmprint.c b/libc/vsmprint.c
index 865c2dd..6f49373 100644
--- a/libc/vsmprint.c
+++ b/libc/vsmprint.c
@@ -1,6 +1,32 @@
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+/*
+ * Plan 9 port version must include libc.h in order to 
+ * get Plan 9 debugging malloc, which sometimes returns
+ * different pointers than the standard malloc. 
+ */
+#ifdef PLAN9PORT
 #include <u.h>
 #include <libc.h>
 #include "fmtdef.h"
+#else
+#include <stdlib.h>
+#include <string.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
+#endif
 
 static int
 fmtStrFlush(Fmt *f)
@@ -10,9 +36,9 @@ fmtStrFlush(Fmt *f)
 
 	if(f->start == nil)
 		return 0;
-	n = (int)f->farg;
+	n = (uintptr)f->farg;
 	n *= 2;
-	s = f->start;
+	s = (char*)f->start;
 	f->start = realloc(s, n);
 	if(f->start == nil){
 		f->farg = nil;
@@ -21,7 +47,7 @@ fmtStrFlush(Fmt *f)
 		free(s);
 		return 0;
 	}
-	f->farg = (void*)n;
+	f->farg = (void*)(uintptr)n;
 	f->to = (char*)f->start + ((char*)f->to - s);
 	f->stop = (char*)f->start + n - 1;
 	return 1;
@@ -41,7 +67,7 @@ fmtstrinit(Fmt *f)
 	f->to = f->start;
 	f->stop = (char*)f->start + n - 1;
 	f->flush = fmtStrFlush;
-	f->farg = (void*)n;
+	f->farg = (void*)(uintptr)n;
 	f->nfmt = 0;
 	return 0;
 }
@@ -57,14 +83,12 @@ vsmprint(char *fmt, va_list args)
 
 	if(fmtstrinit(&f) < 0)
 		return nil;
-	f.args = args;
+	VA_COPY(f.args,args);
 	n = dofmt(&f, fmt);
-	if(f.start == nil)
-		return nil;
+	VA_END(f.args);
 	if(n < 0){
 		free(f.start);
 		return nil;
 	}
-	*(char*)f.to = '\0';
-	return f.start;
+	return fmtstrflush(&f);
 }
diff --git a/libc/vsnprint.c b/libc/vsnprint.c
index bd20496..ed70325 100644
--- a/libc/vsnprint.c
+++ b/libc/vsnprint.c
@@ -1,5 +1,21 @@
-#include <u.h>
-#include <libc.h>
+/*
+ * The authors of this software are Rob Pike and Ken Thompson.
+ *              Copyright (c) 2002 by Lucent Technologies.
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose without fee is hereby granted, provided that this entire notice
+ * is included in all copies of any software which is or includes a copy
+ * or modification of this software and in all copies of the supporting
+ * documentation for such software.
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE
+ * ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
+ * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
+ */
+#include <stdlib.h>
+#include <stdarg.h>
+#include "plan9.h"
+#include "fmt.h"
+#include "fmtdef.h"
 
 int
 vsnprint(char *buf, int len, char *fmt, va_list args)
@@ -12,11 +28,12 @@ vsnprint(char *buf, int len, char *fmt, va_list args)
 	f.start = buf;
 	f.to = buf;
 	f.stop = buf + len - 1;
-	f.flush = nil;
+	f.flush = 0;
 	f.farg = nil;
 	f.nfmt = 0;
-	f.args = args;
+	VA_COPY(f.args,args);
 	dofmt(&f, fmt);
+	VA_END(f.args);
 	*(char*)f.to = '\0';
 	return (char*)f.to - buf;
 }