DragonFly On-Line Manual Pages

Search: Section:  


fixcos(3)                       Allegro manual                       fixcos(3)

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(3), ex3buf(3), exblend(3), excustom(3), exspline(3), exupdate(3) Allegro version 4.4.2 fixcos(3)

Search: Section: