HelenOS sources
copysign 287 uspace/lib/c/include/math.h double copysign(double, double);
copysign 44 uspace/lib/math/generic/fabs.c return copysign(val, 1.0);
copysign 178 uspace/lib/math/generic/nearbyint.c return copysign(_round_even(fabs(val)), val);
copysign 88 uspace/lib/math/generic/round.c return copysign(0.0, val);
copysign 95 uspace/lib/math/generic/round.c return copysign(trunc(u.f + 0.5), val);
copysign 110 uspace/lib/math/generic/trunc.c return copysign(0.0, val);
copysign 117 uspace/lib/math/generic/trunc.c return copysign(u.f, val);
copysign 287 uspace/lib/posix/include/libc/math.h double copysign(double, double);
HelenOS homepage, sources at GitHub