mirror of
git://sourceware.org/git/newlib-cygwin.git
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35555851d7
Commit 6c212a8b7873703c4f98c6b68579b234918be83a
("Fix strtod ("nan") and strtold ("nan") returns wrong negative NaN")
introduced an unconditional dependency to nanl and, in turn, to libm.
Rather than including nanl in libc as well, just call __builtin_nanl
from here. Requires GCC 3.3 or later.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/****************************************************************
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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 <_ansi.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mprec.h"
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#include "gdtoa.h"
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#if defined (_HAVE_LONG_DOUBLE) && !defined (_LDBL_EQ_DBL)
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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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void
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#ifdef KR_headers
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ULtox(L, bits, exp, k) __UShort *L; __ULong *bits; Long exp; int k;
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#else
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ULtox(__UShort *L, __ULong *bits, Long exp, int k)
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#endif
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{
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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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*((long double*)L) = __builtin_nanl ("");
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}
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if (k & STRTOG_Neg)
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L[_0] |= 0x8000;
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}
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int
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#ifdef KR_headers
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_strtorx_l(p, s, sp, rounding, L, loc) struct _reent *p; const char *s; char **sp; int rounding; void *L; locale_t loc;
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#else
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_strtorx_l(struct _reent *p, const char *s, char **sp, int rounding, void *L,
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locale_t loc)
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#endif
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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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FPI *fpi, fpi1;
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__ULong bits[2];
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Long exp;
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int k;
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fpi = &fpi0;
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if (rounding != FPI_Round_near) {
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fpi1 = fpi0;
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fpi1.rounding = rounding;
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fpi = &fpi1;
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}
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k = _strtodg_l(p, s, sp, fpi, &exp, bits, loc);
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ULtox((__UShort*)L, bits, exp, k);
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return k;
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}
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#endif /* _HAVE_LONG_DOUBLE && !_LDBL_EQ_DBL */
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