Mercurial > sdl-ios-xcode
view src/libm/s_copysign.c @ 4768:4435e014eacc
Changed API for shaped windows to make it much, much simpler. A shaped window's shape mask is now accessed as a render target, which means we can get at it with blit and draw functions, as well as (most likely) OpenGL.
| author | Eli Gottlieb <eligottlieb@gmail.com> |
|---|---|
| date | Tue, 25 May 2010 00:23:41 -0400 |
| parents | dc1eb82ffdaa |
| children |
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/* @(#)s_copysign.c 5.1 93/09/24 */ /* * ==================================================== * 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. * ==================================================== */ #if defined(LIBM_SCCS) && !defined(lint) static const char rcsid[] = "$NetBSD: s_copysign.c,v 1.8 1995/05/10 20:46:57 jtc Exp $"; #endif /* * 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.h" #include "math_private.h" libm_hidden_proto(copysign) #ifdef __STDC__ double copysign(double x, double y) #else double copysign(x, y) double x, y; #endif { 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)