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authordas <das@FreeBSD.org>2008-09-03 05:17:02 +0000
committerdas <das@FreeBSD.org>2008-09-03 05:17:02 +0000
commit785a4b4a47b63f20f447a0151f2cf11d1e5d4482 (patch)
treeb69321c7698697d9b90df7930be5cd5a7d1f54e4 /contrib/gdtoa/g_ddfmt.c
parent5bc737f35262327ca86ef96a7cbc6680c8eeb2ea (diff)
downloadFreeBSD-src-785a4b4a47b63f20f447a0151f2cf11d1e5d4482.zip
FreeBSD-src-785a4b4a47b63f20f447a0151f2cf11d1e5d4482.tar.gz
Flatten vendor/gdtoa/*.
Diffstat (limited to 'contrib/gdtoa/g_ddfmt.c')
-rw-r--r--contrib/gdtoa/g_ddfmt.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/contrib/gdtoa/g_ddfmt.c b/contrib/gdtoa/g_ddfmt.c
deleted file mode 100644
index 7fc3057..0000000
--- a/contrib/gdtoa/g_ddfmt.c
+++ /dev/null
@@ -1,154 +0,0 @@
-/****************************************************************
-
-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@acm.org). */
-
-#include "gdtoaimp.h"
-#include <string.h>
-
- char *
-#ifdef KR_headers
-g_ddfmt(buf, dd, ndig, bufsize) char *buf; double *dd; int ndig; unsigned bufsize;
-#else
-g_ddfmt(char *buf, double *dd, int ndig, unsigned bufsize)
-#endif
-{
- FPI fpi;
- char *b, *s, *se;
- ULong *L, bits0[4], *bits, *zx;
- int bx, by, decpt, ex, ey, i, j, mode;
- Bigint *x, *y, *z;
- double ddx[2];
-
- if (bufsize < 10 || bufsize < ndig + 8)
- return 0;
-
- L = (ULong*)dd;
- if ((L[_0] & 0x7ff00000L) == 0x7ff00000L) {
- /* Infinity or NaN */
- if (L[_0] & 0xfffff || L[_1]) {
- nanret:
- return strcp(buf, "NaN");
- }
- if ((L[2+_0] & 0x7ff00000) == 0x7ff00000) {
- if (L[2+_0] & 0xfffff || L[2+_1])
- goto nanret;
- if ((L[_0] ^ L[2+_0]) & 0x80000000L)
- goto nanret; /* Infinity - Infinity */
- }
- infret:
- b = buf;
- if (L[_0] & 0x80000000L)
- *b++ = '-';
- return strcp(b, "Infinity");
- }
- if ((L[2+_0] & 0x7ff00000) == 0x7ff00000) {
- L += 2;
- if (L[_0] & 0xfffff || L[_1])
- goto nanret;
- goto infret;
- }
- if (dd[0] + dd[1] == 0.) {
- b = buf;
-#ifndef IGNORE_ZERO_SIGN
- if (L[_0] & L[2+_0] & 0x80000000L)
- *b++ = '-';
-#endif
- *b++ = '0';
- *b = 0;
- return b;
- }
- if ((L[_0] & 0x7ff00000L) < (L[2+_0] & 0x7ff00000L)) {
- ddx[1] = dd[0];
- ddx[0] = dd[1];
- dd = ddx;
- L = (ULong*)dd;
- }
- z = d2b(dd[0], &ex, &bx);
- if (dd[1] == 0.)
- goto no_y;
- x = z;
- y = d2b(dd[1], &ey, &by);
- if ( (i = ex - ey) !=0) {
- if (i > 0) {
- x = lshift(x, i);
- ex = ey;
- }
- else
- y = lshift(y, -i);
- }
- if ((L[_0] ^ L[2+_0]) & 0x80000000L) {
- z = diff(x, y);
- if (L[_0] & 0x80000000L)
- z->sign = 1 - z->sign;
- }
- else {
- z = sum(x, y);
- if (L[_0] & 0x80000000L)
- z->sign = 1;
- }
- Bfree(x);
- Bfree(y);
- no_y:
- bits = zx = z->x;
- for(i = 0; !*zx; zx++)
- i += 32;
- i += lo0bits(zx);
- if (i) {
- rshift(z, i);
- ex += i;
- }
- fpi.nbits = z->wds * 32 - hi0bits(z->x[j = z->wds-1]);
- if (fpi.nbits < 106) {
- fpi.nbits = 106;
- if (j < 3) {
- for(i = 0; i <= j; i++)
- bits0[i] = bits[i];
- while(i < 4)
- bits0[i++] = 0;
- bits = bits0;
- }
- }
- mode = 2;
- if (ndig <= 0) {
- if (bufsize < (int)(fpi.nbits * .301029995664) + 10) {
- Bfree(z);
- return 0;
- }
- mode = 0;
- }
- fpi.emin = 1-1023-53+1;
- fpi.emax = 2046-1023-106+1;
- fpi.rounding = FPI_Round_near;
- fpi.sudden_underflow = 0;
- i = STRTOG_Normal;
- s = gdtoa(&fpi, ex, bits, &i, mode, ndig, &decpt, &se);
- b = g__fmt(buf, s, se, decpt, z->sign);
- Bfree(z);
- return b;
- }
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