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21 lines
320 B
C
21 lines
320 B
C
/*
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* Written by Ulrich Drepper <drepper@gmail.com>.
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*/
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/*
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* __isinf_ns(x) returns != 0 if x is ±inf, else 0;
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* no branching!
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*/
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#include <math.h>
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#include <math_private.h>
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#undef __isinf_ns
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int
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__isinf_ns (double x)
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{
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int32_t hx,lx;
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EXTRACT_WORDS(hx,lx,x);
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return !(lx | ((hx & 0x7fffffff) ^ 0x7ff00000));
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}
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