34 lines
453 B
C
34 lines
453 B
C
/*
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* isinff(x) returns 1 if x is +-infinity, else 0;
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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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return FLT_UWORD_IS_INFINITE(ix);
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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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