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