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* mingwex/gdtoa/g_xfmt.c (g_xfmt): Fix representation of infinity. Use fpclassify.

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* mingwex/gdtoa/strtopx (__strtopx): Avoid cast of long double* to void*.
	* mingwex/gdtoa/gdtoa.h (__g_fmt): Make declaration consistent with others.
This commit is contained in:
Danny Smith 2006-09-17 22:27:56 +00:00
parent 7aa8dc8eb0
commit dad3363707
4 changed files with 41 additions and 21 deletions
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9
winsup/mingw/ChangeLog
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@ -1,3 +1,12 @@
2006-09-18 Danny Smith <dannysmith@users.sourceforge.net>
* mingwex/gdtoa/g_xfmt.c (g_xfmt): Fix representation of infinity.
Use fpclassify.
* mingwex/gdtoa/strtopx (__strtopx): Avoid cast of long double* to
void*.
* mingwex/gdtoa/gdtoa.h (__g_fmt): Make declaration consistent with
others.
2006-09-16 Danny Smith <dannysmith@users.sourceforge.net>
* mingwex/gdtoa/strtopx.c (strtopx): Fix long double representation

45
winsup/mingw/mingwex/gdtoa/g_xfmt.c
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@ -64,6 +64,8 @@ __g_xfmt(char *buf, void *V, int ndig, unsigned bufsize)
UShort *L;
int decpt, ex, i, mode;
int fptype = __fpclassifyl (*(long double*) V);
if (ndig < 0)
ndig = 0;
if (bufsize < ndig + 10)
@ -71,28 +73,36 @@ __g_xfmt(char *buf, void *V, int ndig, unsigned bufsize)
L = (UShort *)V;
sign = L[_0] & 0x8000;
ex = L[_0] & 0x7fff;
bits[1] = (L[_1] << 16) | L[_2];
bits[0] = (L[_3] << 16) | L[_4];
if ( (ex = L[_0] & 0x7fff) !=0) {
if (ex == 0x7fff) {
/* Infinity or NaN */
if (bits[0] | bits[1])
b = strcp(buf, "NaN");
else {
b = buf;
if (sign)
*b++ = '-';
b = strcp(b, "Infinity");
}
return b;
}
i = STRTOG_Normal;
}
else if (bits[0] | bits[1]) {
if (fptype & FP_NAN) /* NaN or Inf */
{
if (fptype & FP_NORMAL)
{
b = buf;
*b++ = sign ? '-': '+';
strncpy (b, "Infinity", ndig ? ndig : 8);
return (buf + strlen (buf));
}
strncpy (buf, "NaN", ndig ? ndig : 3);
return (buf + strlen (buf));
}
else if (fptype & FP_NORMAL) /* Normal or subnormal */
{
if (fptype & FP_ZERO)
{
i = STRTOG_Denormal;
ex = 1;
}
}
else
i = STRTOG_Normal;
}
else {
i = STRTOG_Zero;
b = buf;
#ifndef IGNORE_ZERO_SIGN
if (sign)
@ -102,6 +112,7 @@ __g_xfmt(char *buf, void *V, int ndig, unsigned bufsize)
*b = 0;
return b;
}
ex -= 0x3fff + 63;
mode = 2;
if (ndig <= 0) {

2
winsup/mingw/mingwex/gdtoa/gdtoa.h
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@ -116,7 +116,7 @@ extern float __strtof ANSI((CONST char *, char **));
extern double __strtod ANSI((CONST char *, char **));
extern long double strtold ANSI((CONST char *, char **));
extern char* __g__fmt(char *, char *, char *e, int, ULong);
extern char* __g__fmt ANSI((char *, char *, char *e, int, ULong));
extern char* __g_dfmt ANSI((char*, double*, int, unsigned));
extern char* __g_ffmt ANSI((char*, float*, int, unsigned));
extern char* __g_xfmt ANSI((char*, void*, int, unsigned));

6
winsup/mingw/mingwex/gdtoa/strtopx.c
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@ -53,9 +53,9 @@ THIS SOFTWARE.
static int
#ifdef KR_headers
__strtopx(s, sp, V) CONST char *s; char **sp; void *V;
__strtopx(s, sp, V) CONST char *s; char **sp; long double *V;
#else
__strtopx(CONST char *s, char **sp, void *V)
__strtopx(CONST char *s, char **sp, long double *V)
#endif
{
static FPI fpi = { 64, 1-16383-64+1, 32766 - 16383 - 64 + 1, 1, SI };
@ -108,7 +108,7 @@ __cdecl
__strtold (const char * __restrict__ src, char ** __restrict__ endptr)
{
long double ret;
__strtopx(src, endptr, (void*) &ret);
__strtopx(src, endptr, &ret);
return ret;
}