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Diffstat (limited to 'core/include/fmath.h')
| -rw-r--r-- | core/include/fmath.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/core/include/fmath.h b/core/include/fmath.h new file mode 100644 index 0000000..154d4bb --- /dev/null +++ b/core/include/fmath.h @@ -0,0 +1,62 @@ +/* + * Copyright © 2006-2013 SplinterGU (Fenix/Bennugd) + * Copyright © 2002-2006 Fenix Team (Fenix) + * Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix) + * + * This file is part of Bennu - Game Development + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source + * distribution. + * + */ + +#ifndef _FMATH_H +#define _FMATH_H + +#include <math.h> + +#include "bgdcore.h" + +/* Rutinas matemáticas de punto fijo, basadas en Allegro */ + +#ifndef M_PI +#define M_PI 3.14159265358979323846 /* PI */ +#endif + +#ifndef ABS +#define ABS(x) (((x) < 0) ? -(x):(x)) +#endif +#ifndef SGN +#define SGN(a) (((a) < 0) ? -1 : !(a) ? 0 : 1) +#endif + +typedef long int fixed ; + +extern fixed ftofix( float x ); +extern float fixtof( fixed x ); +extern fixed itofix( int x ); +extern int fixtoi( fixed x ); +extern int fixceil( fixed x ); +extern fixed fcos( int x ); +extern fixed fsin( int x ); +extern fixed fmul( int x, int y ); +extern fixed fdiv( int x, int y ); +extern void init_cos_tables(); + +#endif |