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glibc  2.9
Functions
s_isnanf.c File Reference
#include "math.h"
#include "math_private.h"

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Functions

int __isnanf (float x)

Function Documentation

int __isnanf ( float  x)

Definition at line 31 of file s_isnanf.c.

{
       int32_t ix;
       GET_FLOAT_WORD(ix,x);
       ix &= 0x7fffffff;
       ix = 0x7f800000 - ix;
       return (int)(((u_int32_t)(ix))>>31);
}

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