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)

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