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[/] [or1k/] [trunk/] [newlib/] [newlib/] [libm/] [mathfp/] [sf_isinf.c] - Rev 1767
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/* @(#)z_isinff.c 1.0 98/08/13 */ /****************************************************************** * isinff * * Input: * x - pointer to a floating point value * * Output: * An integer that indicates if the number is infinite. * * Description: * This routine returns an integer that indicates if the number * passed in is infinite (1) or is finite (0). * *****************************************************************/ #include "fdlibm.h" #include "zmath.h" int isinff (float x) { __uint32_t wx; int exp; GET_FLOAT_WORD (wx, x); exp = (wx & 0x7f800000) >> 23; if ((exp == 0x7f8) && !(wx & 0xf0000)) return (1); else return (0); }
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