15e114f5c5
* mingwex/gdtoa/README.mingw mingwex/gdtoa/gdtoa_fltrnds.h: New files.
* mingwex/gdtoa/README mingwex/gdtoa/dmisc.c mingwex/gdtoa/dtoa.c
mingwex/gdtoa/g__fmt.c mingwex/gdtoa/g_dfmt.c mingwex/gdtoa/g_ffmt.c
mingwex/gdtoa/g_xfmt.c mingwex/gdtoa/gd_arith.h mingwex/gdtoa/gd_qnan.h
mingwex/gdtoa/gdtoa.c mingwex/gdtoa/gdtoa.h mingwex/gdtoa/gdtoaimp.h
mingwex/gdtoa/gethex.c mingwex/gdtoa/gmisc.c mingwex/gdtoa/hd_init.c
mingwex/gdtoa/hexnan.c mingwex/gdtoa/misc.c mingwex/gdtoa/qnan.c
mingwex/gdtoa/smisc.c mingwex/gdtoa/strtodg.c mingwex/gdtoa/strtodnrp.c
mingwex/gdtoa/strtof.c mingwex/gdtoa/strtopx.c mingwex/gdtoa/sum.c
mingwex/gdtoa/ulp.c: Update the gdtoa library to match the netlib.org
sources as of Apr. 20, 2009. Update further to match the sources in
the mingw-w64 tree as of June 28, 2009, by removing IBM, CRAY and VAX
code, removing KR_headers, ANSI, Void and Char ifdefs, renaming the
double/ulong union from U to dbl_union for better grepping and white-
space tidy-ups.
125 lines
2.9 KiB
C
Executable File
125 lines
2.9 KiB
C
Executable File
/****************************************************************
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The author of this software is David M. Gay.
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Copyright (C) 1998, 2000 by Lucent Technologies
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and
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its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of Lucent or any of its entities
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not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior
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permission.
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LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
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IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
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SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
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IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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THIS SOFTWARE.
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****************************************************************/
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/* Please send bug reports to David M. Gay (dmg at acm dot org,
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* with " at " changed at "@" and " dot " changed to "."). */
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#include "gdtoaimp.h"
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#undef _0
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#undef _1
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/* one or the other of IEEE_MC68k or IEEE_8087 should be #defined */
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#ifdef IEEE_MC68k
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#define _0 0
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#define _1 1
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#define _2 2
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#define _3 3
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#define _4 4
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#endif
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#ifdef IEEE_8087
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#define _0 4
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#define _1 3
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#define _2 2
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#define _3 1
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#define _4 0
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#endif
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typedef union lD {
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UShort L[5];
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long double D;
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} lD;
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static int __strtopx (const char *s, char **sp, lD *V)
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{
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static FPI fpi0 = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, SI };
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ULong bits[2];
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Long exp;
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int k;
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UShort *L = & (V->L[0]);
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#ifdef Honor_FLT_ROUNDS
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#include "gdtoa_fltrnds.h"
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#else
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#define fpi &fpi0
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#endif
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V->D = 0.0L;
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k = __strtodg(s, sp, fpi, &exp, bits);
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switch(k & STRTOG_Retmask) {
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case STRTOG_NoNumber:
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case STRTOG_Zero:
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L[0] = L[1] = L[2] = L[3] = L[4] = 0;
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break;
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case STRTOG_Denormal:
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L[_0] = 0;
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goto normal_bits;
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case STRTOG_Normal:
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case STRTOG_NaNbits:
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L[_0] = exp + 0x3fff + 63;
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normal_bits:
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L[_4] = (UShort)bits[0];
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L[_3] = (UShort)(bits[0] >> 16);
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L[_2] = (UShort)bits[1];
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L[_1] = (UShort)(bits[1] >> 16);
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break;
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case STRTOG_Infinite:
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L[_0] = 0x7fff;
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L[_1] = 0x8000;
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L[_2] = L[_3] = L[_4] = 0;
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break;
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case STRTOG_NaN:
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L[0] = ldus_QNAN0;
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L[1] = ldus_QNAN1;
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L[2] = ldus_QNAN2;
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L[3] = ldus_QNAN3;
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L[4] = ldus_QNAN4;
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}
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if (k & STRTOG_Neg)
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L[_0] |= 0x8000;
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return k;
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}
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long double __cdecl
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__strtold (const char * __restrict__ src, char ** __restrict__ endptr)
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{
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lD ret;
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ret.D = 0.0L;
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__strtopx(src, endptr, &ret);
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return ret.D;
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}
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long double __cdecl
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strtold (const char * __restrict__ src, char ** __restrict__ endptr)
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__attribute__((alias("__strtold")));
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