Mercurial > sdl-ios-xcode
view src/libm/math.h @ 2824:4dba7aa7ea77
Added slow but complete blit fallback
Don't try to RLE encode surfaces that have alpha channel and alpha modulation
Don't turn on blending when converting an RGB surface to RGBA format
Do turn on blending when converting colorkey to alpha channel
author | Sam Lantinga <slouken@libsdl.org> |
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date | Tue, 02 Dec 2008 17:14:04 +0000 |
parents | 2a46b5912665 |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #ifdef HAVE_MATH_H #define _USE_MATH_DEFINES #include <math.h> #else /* Math routines from uClibc: http://www.uclibc.org */ #define M_PI 3.14159265358979323846264338327950288 /* pi */ extern double __ieee754_log(double x); extern double __ieee754_pow(double x, double y); extern double __ieee754_sqrt(double x); #define log(x) __ieee754_log(x) #define pow(x, y) __ieee754_pow(x, y) #define sqrt(x) __ieee754_sqrt(x) extern double copysign(double x, double y); extern double cos(double x); extern double fabs(double x); extern double floor(double x); extern double scalbn(double x, int n); extern double sin(double x); #define sinf(x) (float)sin((double)x) #define cosf(x) (float)cos((double)x) #endif /* HAVE_MATH_H */ /* vi: set ts=4 sw=4 expandtab: */