Sara
c3f9669b10
git-subtree-dir: engine git-subtree-mainline:b74841629egit-subtree-split:a8e37fc010
24 lines
402 B
C
24 lines
402 B
C
#include "SDL_internal.h"
|
|
/*
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
/*
|
|
* isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0;
|
|
* no branching!
|
|
*/
|
|
|
|
#include "math.h"
|
|
#include "math_private.h"
|
|
|
|
int __isinff (float x)
|
|
{
|
|
int32_t ix,t;
|
|
GET_FLOAT_WORD(ix,x);
|
|
t = ix & 0x7fffffff;
|
|
t ^= 0x7f800000;
|
|
t |= -t;
|
|
return ~(t >> 31) & (ix >> 30);
|
|
}
|
|
libm_hidden_def(__isinff)
|