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Man Pages
fixcos(3) Allegro manual fixcos(3)

fixcos - Fixed point cosine of binary angles. Allegro game programming library.

#include <allegro.h>

fixed fixcos(fixed x);

This function finds the cosine of a value using a lookup table. The input value must be a fixed point binary angle. Example:

   fixed angle;
   float result;
   
   /* Set the binary angle to 45 degrees. */
   angle = itofix(32);
   /* The cosine of 45 degrees is about 0.7071. */
   result = fixtof(fixcos(angle));
   ASSERT(result > 0.7 && result < 0.71);

Returns the cosine of a fixed point binary format angle. The return value will be in radians.

, ex12bit(3), ex3buf(3), exblend(3), excustom(3), exspline(3), exupdate(3)
version 4.4.3 Allegro

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