blob: 9ee60c062590bc853fd45ab9f25f0e84e5839cd3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
|
/*
* isinff(x) returns 1 if x is +-infinity, else 0;
*
* isinff is an extension declared in <ieeefp.h> and
* <math.h>.
*/
#include "fdlibm.h"
int
_DEFUN (isinff, (x),
float x)
{
__int32_t ix;
GET_FLOAT_WORD(ix,x);
ix &= 0x7fffffff;
return FLT_UWORD_IS_INFINITE(ix);
}
#ifdef _DOUBLE_IS_32BITS
int
_DEFUN (isinf, (x),
double x)
{
return isinff((float) x);
}
#endif /* defined(_DOUBLE_IS_32BITS) */
|