From 1497dccd63a84b7ee2b229b1ad9c5c02718f2a78 Mon Sep 17 00:00:00 2001 From: chai Date: Tue, 19 Mar 2019 23:06:27 +0800 Subject: *rename --- source/3rd-party/SDL2/src/libm/s_copysign.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 source/3rd-party/SDL2/src/libm/s_copysign.c (limited to 'source/3rd-party/SDL2/src/libm/s_copysign.c') diff --git a/source/3rd-party/SDL2/src/libm/s_copysign.c b/source/3rd-party/SDL2/src/libm/s_copysign.c new file mode 100644 index 0000000..a2f275b --- /dev/null +++ b/source/3rd-party/SDL2/src/libm/s_copysign.c @@ -0,0 +1,29 @@ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* + * copysign(double x, double y) + * copysign(x,y) returns a value with the magnitude of x and + * with the sign bit of y. + */ + +#include "math_libm.h" +#include "math_private.h" + +double copysign(double x, double y) +{ + u_int32_t hx,hy; + GET_HIGH_WORD(hx,x); + GET_HIGH_WORD(hy,y); + SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000)); + return x; +} +libm_hidden_def(copysign) -- cgit v1.1-26-g67d0