1#include "libm.h"
2
3#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
4long double copysignl(long double x, long double y) {
5    return copysign(x, y);
6}
7#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
8long double copysignl(long double x, long double y) {
9    union ldshape ux = {x}, uy = {y};
10    ux.i.se &= 0x7fff;
11    ux.i.se |= uy.i.se & 0x8000;
12    return ux.f;
13}
14#endif
15