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

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Functions

int __isinff (float x)

Function Documentation

int __isinff ( float  x)

Definition at line 19 of file s_isinff.c.

{
       int32_t ix,t;
       GET_FLOAT_WORD(ix,x);
       t = ix & 0x7fffffff;
       t ^= 0x7f800000;
       t |= -t;
       return ~(t >> 31) & (ix >> 30);
}

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