Preprocessor Macros: Difference between revisions
Created page with "Some common preprocessor macros ==GLSL== <syntaxhighlight lang="c"> #define PI 3.14159265359 #define PI_2 1.57079632679 </syntaxhighlight>" |
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==GLSL== | ==GLSL== | ||
<syntaxhighlight lang="c"> | <syntaxhighlight lang="c"> | ||
#define PI 3. | #define PI 3.141592653589793 | ||
#define PI_2 1. | #define PI_2 1.5707963267948966 | ||
#define DEG2RAD 0.017453292519943295 | |||
#define RAD2DEG 57.29577951308232 | |||
#define sign(x) (int((x) > 0) - int((x) < 0)) | |||
#define imin(x, y) (int(x) * int(int(x) < int(y)) + int(y) * int(int(x) >= int(y))) | |||
#define imax(x, y) (int(x) * int(int(x) > int(y)) + int(y) * int(int(x) <= int(y))) | |||
#define iabs(x) ((x) * int((x) >= 0) - (x) * int((x) < 0)) | |||
</syntaxhighlight> | </syntaxhighlight> | ||
Revision as of 17:17, 30 October 2019
Some common preprocessor macros
GLSL
#define PI 3.141592653589793
#define PI_2 1.5707963267948966
#define DEG2RAD 0.017453292519943295
#define RAD2DEG 57.29577951308232
#define sign(x) (int((x) > 0) - int((x) < 0))
#define imin(x, y) (int(x) * int(int(x) < int(y)) + int(y) * int(int(x) >= int(y)))
#define imax(x, y) (int(x) * int(int(x) > int(y)) + int(y) * int(int(x) <= int(y)))
#define iabs(x) ((x) * int((x) >= 0) - (x) * int((x) < 0))