/** * This file has no copyright assigned and is placed in the Public Domain. * This file is part of the mingw-w64 runtime package. * No warranty is given; refer to the file DISCLAIMER.PD within this package. */ #include typedef union ui_f { float f; unsigned int ui; } ui_f; float copysignf(float aX, float aY) { ui_f x,y; x.f=aX; y.f=aY; x.ui= (x.ui & 0x7fffffff) | (y.ui & 0x80000000); return x.f; }