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 4.4.2 fixcos(3alleg4)