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/* * isinff(x) returns 1 if x is infinity, else 0; * no branching! * Added by Cygnus Support. */ #include "fdlibm.h" #ifdef __STDC__ int isinff(float x) #else int isinff(x) float x; #endif { __int32_t ix; GET_FLOAT_WORD(ix,x); ix &= 0x7fffffff; ix = 0x7f800000 - ix; return 1 - (int)((__uint32_t)(ix|(-ix))>>31); } #ifdef _DOUBLE_IS_32BITS #ifdef __STDC__ int isinf(double x) #else int isinf(x) double x; #endif { return isinff((float) x); } #endif /* defined(_DOUBLE_IS_32BITS) */