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This commit is contained in:
Justine Tunney
2020-06-15 07:18:57 -07:00
commit c91b3c5006
14915 changed files with 590219 additions and 0 deletions
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8
libc/math/copysign.c Normal file
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#include "libc/math/libm.h"
double copysign(double x, double y) {
union {double f; uint64_t i;} ux={x}, uy={y};
ux.i &= -1ULL/2;
ux.i |= uy.i & 1ULL<<63;
return ux.f;
}