1fixcos(3)                       Allegro manual                       fixcos(3)
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NAME

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

10       #include <allegro.h>
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13       fixed fixcos(fixed x);
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DESCRIPTION

16       This function finds the cosine of a value using  a  lookup  table.  The
17       input value must be a fixed point binary angle. Example:
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19          fixed angle;
20          float result;
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22          /* Set the binary angle to 45 degrees. */
23          angle = itofix(32);
24          /* The cosine of 45 degrees is about 0.7071. */
25          result = fixtof(fixcos(angle));
26          ASSERT(result > 0.7 && result < 0.71);
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RETURN VALUE

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

34       , ex12bit(3), ex3buf(3), exblend(3),  excustom(3),  exspline(3),  exup‐
35       date(3)
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39Allegro                          version 4.2.3                       fixcos(3)