diff options
author | Danny Smith <dannysmith@users.sourceforge.net> | 2006-09-01 03:48:56 +0400 |
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committer | Danny Smith <dannysmith@users.sourceforge.net> | 2006-09-01 03:48:56 +0400 |
commit | e635b309569280551f915a854fe987cb1756b0f1 (patch) | |
tree | be10e9489e576e2c03af02165bf627163ef1aef4 /winsup/mingw/mingwex/gdtoa/g_ffmt.c | |
parent | 55283468e62dd074fe9b1b0428b319d908e0e5d2 (diff) |
Import David Gay's gdtoa library.
* mingwex/gdtoa: New directory.
* mingwex/gdtoa/(arithchk.c, dmisc.c, dtoa.c, g__fmt.c, g_dfmt.c,
g_ffmt.c, g_xfmt.c, gd_arith.h, gd_qnan.h, gdtoa.c, gdtoa.h,
gdtoaimp.h, gethex.c, gmisc.c, hd_init.c, hexnan.c, misc.c, qnan.c,
README, smisc.c, strtodg.c, strtodnrp.c, strtof.c, strtopx.c, sum.c,
ulp.c): New files.
* mingwex/(strtof.c, strtold.c, ldtoa.c): Remove files.
* mingwex/math/(cephes-emath.c, cephes-emath.h): Remove files.
* mingwex/mb_wc_common.h (get_cp_from_locale); Rename to get_codepage().
* mingwex/(btowc.c, wctob.c, mbrtowc.c, wcrtomb.c): Adjust call to get_codepage().
* mingwex/wcstold.c: Avoid using strtold internals.
* mingwex/wcstof.c: Rewrite.
* mingwex/Makefile.in (GDTOA_DISTFILES): Add to distribution.
(GDTOA_OBJS): Add to library.
(DISTFILES): Remove strtof.c strtold.c ldtoa.c cephes-emath.c cephes-emath.h.
(STDLIB_OBJS): Remove.
(STDLIB_STUB_OBJS): Remove strtof.o wcstof,o.
(Q8_OBJS): Add wcstof.o wcstold.o.
* include/stdlib.h (strtof): Remove inline definition.
(wcstof): Likewise.
* include/wchar.h (wcstof): Remove inline definition.
Diffstat (limited to 'winsup/mingw/mingwex/gdtoa/g_ffmt.c')
-rwxr-xr-x | winsup/mingw/mingwex/gdtoa/g_ffmt.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/gdtoa/g_ffmt.c b/winsup/mingw/mingwex/gdtoa/g_ffmt.c new file mode 100755 index 000000000..e62259dd6 --- /dev/null +++ b/winsup/mingw/mingwex/gdtoa/g_ffmt.c @@ -0,0 +1,88 @@ +/**************************************************************** + +The author of this software is David M. Gay. + +Copyright (C) 1998 by Lucent Technologies +All Rights Reserved + +Permission to use, copy, modify, and distribute this software and +its documentation for any purpose and without fee is hereby +granted, provided that the above copyright notice appear in all +copies and that both that the copyright notice and this +permission notice and warranty disclaimer appear in supporting +documentation, and that the name of Lucent or any of its entities +not be used in advertising or publicity pertaining to +distribution of the software without specific, written prior +permission. + +LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. +IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY +SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER +IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF +THIS SOFTWARE. + +****************************************************************/ + +/* Please send bug reports to David M. Gay (dmg at acm dot org, + * with " at " changed at "@" and " dot " changed to "."). */ + +#include "gdtoaimp.h" + + char* +#ifdef KR_headers +__g_ffmt(buf, f, ndig, bufsize) char *buf; float *f; int ndig; unsigned bufsize; +#else +__g_ffmt(char *buf, float *f, int ndig, unsigned bufsize) +#endif +{ + static FPI fpi = { 24, 1-127-24+1, 254-127-24+1, 1, 0 }; + char *b, *s, *se; + ULong bits[1], *L, sign; + int decpt, ex, i, mode; + + if (ndig < 0) + ndig = 0; + if (bufsize < ndig + 10) + return 0; + + L = (ULong*)f; + sign = L[0] & 0x80000000L; + if ((L[0] & 0x7f800000) == 0x7f800000) { + /* Infinity or NaN */ + if (L[0] & 0x7fffff) { + return strcp(buf, "NaN"); + } + b = buf; + if (sign) + *b++ = '-'; + return strcp(b, "Infinity"); + } + if (*f == 0.) { + b = buf; +#ifndef IGNORE_ZERO_SIGN + if (L[0] & 0x80000000L) + *b++ = '-'; +#endif + *b++ = '0'; + *b = 0; + return b; + } + bits[0] = L[0] & 0x7fffff; + if ( (ex = (L[0] >> 23) & 0xff) !=0) + bits[0] |= 0x800000; + else + ex = 1; + ex -= 0x7f + 23; + mode = 2; + if (ndig <= 0) { + if (bufsize < 16) + return 0; + mode = 0; + } + i = STRTOG_Normal; + s = __gdtoa(&fpi, ex, bits, &i, mode, ndig, &decpt, &se); + return __g__fmt(buf, s, se, decpt, sign); + } |