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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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13
libc/math/__signbit.c Normal file
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#include "libc/math/libm.h"
// FIXME: macro in math.h
int __signbit(double x)
{
union {
double d;
uint64_t i;
} y = { x };
return y.i>>63;
}