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Remove isinf/isnan emulation in win32config.h

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There's already a better fallback in xpath.c.
This commit is contained in:
Nick Wellnhofer 2022-03-03 23:57:59 +01:00
parent bc06a522c1
commit ae3cf4831c
1 changed files with 0 additions and 57 deletions
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57
include/win32config.h
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@ -21,63 +21,6 @@
*/
#undef except
#define HAVE_ISINF
#define HAVE_ISNAN
#include <math.h>
#if defined(_MSC_VER) || defined(__BORLANDC__)
/* MS C-runtime has functions which can be used in order to determine if
a given floating-point variable contains NaN, (+-)INF. These are
preferred, because floating-point technology is considered proprietary
by MS and we can assume that their functions know more about their
oddities than we do. */
#include <float.h>
/* Bjorn Reese figured a quite nice construct for isinf() using the _fpclass
function. */
#ifndef isinf
#define isinf(d) ((_fpclass(d) == _FPCLASS_PINF) ? 1 \
: ((_fpclass(d) == _FPCLASS_NINF) ? -1 : 0))
#endif
/* _isnan(x) returns nonzero if (x == NaN) and zero otherwise. */
#ifndef isnan
#define isnan(d) (_isnan(d))
#endif
#else /* _MSC_VER */
#ifndef isinf
static int isinf (double d) {
int expon = 0;
double val = frexp (d, &expon);
if (expon == 1025) {
if (val == 0.5) {
return 1;
} else if (val == -0.5) {
return -1;
} else {
return 0;
}
} else {
return 0;
}
}
#endif
#ifndef isnan
static int isnan (double d) {
int expon = 0;
double val = frexp (d, &expon);
if (expon == 1025) {
if (val == 0.5) {
return 0;
} else if (val == -0.5) {
return 0;
} else {
return 1;
}
} else {
return 0;
}
}
#endif
#endif /* _MSC_VER */
#if defined(_MSC_VER)
#define mkdir(p,m) _mkdir(p)
#if _MSC_VER < 1900