fixcos

fixcos(3alleg4)                  Allegro manual                  fixcos(3alleg4)



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

SYNOPSIS
       #include <allegro.h>


       fixed fixcos(fixed x);

DESCRIPTION
       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);

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


SEE ALSO
       , ex12bit(3alleg4), ex3buf(3alleg4), exblend(3alleg4), excustom(3alleg4),
       exspline(3alleg4), exupdate(3alleg4)



Allegro                           version 4.4.3                  fixcos(3alleg4)