diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 15e49f1c1..34ebe4861 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,26 @@
+2000-08-23  Werner Almesberger  <Werner.Almesberger@epfl.ch>
+
+	* libc/stdlib/mprec.c (ulp, b2d, d2b): changed a few expressions
+	like  x << y-z  to the equivalent  x << (y-z).
+	(d2b): changed if statements with assignment to perform the
+	assignment prior to the if check.
+	* libc/reent/reent.c: included stdlib.h for "_free_r" prototype.
+	* libc/unix/getpass.c (getpass): moved "echo" assignment out of if.
+	* libc/unix/ttyname.c: included string.h for "strcpy" prototype.
+	* libc/unix/getcwd.c (ISDOT): added parentheses to clarify && and ||
+	precedence.
+	* libc/include/sys/unistd.h: added "vfork" prototype (for popen.c).
+	Added "_execve" prototype (for execl.c, execle.c, execv.c, and 
+	execve.c).
+	* libc/posix/popen.c (popen): added parentheses to clarify && and ||
+	precedence.
+	* libm/math/e_cosh.c (__ieee754_cosh): changed parentheses to
+	clarify && and || precendence (and to remove pascalism).
+	* libm/math/e_sinh.c (__ieee754_sinh): Ditto.
+	* libm/math/s_infconst.c: added another pair of braces to all
+	initializers for __infinity (need three: for __infinity[1] array,
+	for union __dmath, and for i[2]).
+
 2000-08-23  Werner Almesberger  <Werner.Almesberger@epfl.ch>
 
 	* libc/stdlib/abort.c: changed description: uses "raise" instead of
diff --git a/newlib/libc/include/sys/unistd.h b/newlib/libc/include/sys/unistd.h
index 609a64df5..a226a40aa 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -75,6 +75,10 @@ char    _EXFUN(*ttyname, (int __fildes ));
 int     _EXFUN(unlink, (const char *__path ));
 int     _EXFUN(write, (int __fildes, const void *__buf, size_t __nbyte ));
 
+#ifndef        _POSIX_SOURCE
+pid_t   _EXFUN(vfork, (void ));
+#endif /* _POSIX_SOURCE */
+
 /* Provide prototypes for most of the _<systemcall> names that are
    provided in newlib for some compilers.  */
 int     _EXFUN(_close, (int __fildes ));
@@ -86,6 +90,7 @@ int     _EXFUN(_read, (int __fildes, void *__buf, size_t __nbyte ));
 void *  _EXFUN(_sbrk,  (size_t __incr));
 int     _EXFUN(_unlink, (const char *__path ));
 int     _EXFUN(_write, (int __fildes, const void *__buf, size_t __nbyte ));
+int     _EXFUN(_execve, (const char *__path, char * const __argv[], char * const __envp[] ));
 
 #if defined(__CYGWIN__) || defined(__rtems__)
 unsigned _EXFUN(usleep, (unsigned int __useconds));
diff --git a/newlib/libc/posix/popen.c b/newlib/libc/posix/popen.c
index f6a7421ee..4fd3dd93d 100644
--- a/newlib/libc/posix/popen.c
+++ b/newlib/libc/posix/popen.c
@@ -71,7 +71,7 @@ popen(program, type)
 	FILE *iop;
 	int pdes[2], pid;
 
-	if (*type != 'r' && *type != 'w' || type[1]) {
+       if ((*type != 'r' && *type != 'w') || type[1]) {
 		errno = EINVAL;
 		return (NULL);
 	}
diff --git a/newlib/libc/reent/reent.c b/newlib/libc/reent/reent.c
index 93b3e86c8..749a5bf6b 100644
--- a/newlib/libc/reent/reent.c
+++ b/newlib/libc/reent/reent.c
@@ -10,6 +10,7 @@ DESCRIPTION
 	non-rentrant functions, such as strtok.
 */
 
+#include <stdlib.h>
 #include <reent.h>
 
 /* Interim cleanup code */
diff --git a/newlib/libc/stdlib/mprec.c b/newlib/libc/stdlib/mprec.c
index 04ece0713..8a2d404dc 100644
--- a/newlib/libc/stdlib/mprec.c
+++ b/newlib/libc/stdlib/mprec.c
@@ -663,7 +663,7 @@ _DEFUN (ulp, (_x), double _x)
 	  word0 (a) = 0;
 	  L -= Exp_shift;
 #ifndef _DOUBLE_IS_32BITS
-	  word1 (a) = L >= 31 ? 1 : 1 << 31 - L;
+         word1 (a) = L >= 31 ? 1 : 1 << (31 - L);
 #endif
 	}
     }
@@ -710,7 +710,7 @@ _DEFUN (b2d, (a, e),
       d0 = Exp_1 | y << k | z >> (32 - k);
       y = xa > xa0 ? *--xa : 0;
 #ifndef _DOUBLE_IS_32BITS
-      d1 = z << k | y >> 32 - k;
+      d1 = z << k | y >> (32 - k);
 #endif
     }
   else
@@ -794,11 +794,13 @@ _DEFUN (d2b,
 #endif
 #ifdef Pack_32
 #ifndef _DOUBLE_IS_32BITS
-  if (y = d1)
+  if (d1)
     {
-      if (k = lo0bits (&y))
+      y = d1;
+      k = lo0bits (&y);
+      if (k)
 	{
-	  x[0] = y | z << 32 - k;
+         x[0] = y | z << (32 - k);
 	  z >>= k;
 	}
       else
@@ -820,9 +822,11 @@ _DEFUN (d2b,
 #endif
     }
 #else
-  if (y = d1)
+  if (d1)
     {
-      if (k = lo0bits (&y))
+      y = d1;
+      k = lo0bits (&y);
+      if (k)
 	if (k >= 16)
 	  {
 	    x[0] = y | z << 32 - k & 0xffff;
diff --git a/newlib/libc/unix/getcwd.c b/newlib/libc/unix/getcwd.c
index ee53536ed..826fc789d 100644
--- a/newlib/libc/unix/getcwd.c
+++ b/newlib/libc/unix/getcwd.c
@@ -49,7 +49,7 @@ static char sccsid[] = "@(#)getcwd.c	5.11 (Berkeley) 2/24/91";
 
 #define	ISDOT(dp) \
 	(dp->d_name[0] == '.' && (dp->d_name[1] == '\0' || \
-	    dp->d_name[1] == '.' && dp->d_name[2] == '\0'))
+           (dp->d_name[1] == '.' && dp->d_name[2] == '\0')))
 
 #ifndef _REENT_ONLY
 
diff --git a/newlib/libc/unix/getpass.c b/newlib/libc/unix/getpass.c
index ff9e7e67d..b45df074f 100644
--- a/newlib/libc/unix/getpass.c
+++ b/newlib/libc/unix/getpass.c
@@ -70,7 +70,8 @@ getpass (prompt)
    */
   omask = sigblock (sigmask (SIGINT) | sigmask (SIGTSTP));
   (void) tcgetattr (fileno (fp), &term);
-  if (echo = (term.c_lflag & ECHO))
+  echo = (term.c_lflag & ECHO);
+  if (echo)
     {
       term.c_lflag &= ~ECHO;
       (void) tcsetattr (fileno (fp), TCSAFLUSH, &term);
diff --git a/newlib/libc/unix/ttyname.c b/newlib/libc/unix/ttyname.c
index 582a7903f..258ba25fe 100644
--- a/newlib/libc/unix/ttyname.c
+++ b/newlib/libc/unix/ttyname.c
@@ -41,6 +41,7 @@ static char sccsid[] = "@(#)ttyname.c	5.10 (Berkeley) 5/6/91";
 #include <dirent.h>
 #include <termios.h>
 #include <unistd.h>
+#include <string.h>
 #include <paths.h>
 #include <_syslist.h>