.\" Generated by the Allegro makedoc utility
.TH fixcos 3alleg4 "version 4.4.3" "Allegro" "Allegro manual"
.SH NAME
fixcos \- Fixed point cosine of binary angles. Allegro game programming library.\&
.SH SYNOPSIS
.B #include <allegro.h>

.sp
.B fixed fixcos(fixed x);
.SH DESCRIPTION
This function finds the cosine of a value using a lookup table. The input
value must be a fixed point binary angle. Example:

.nf
   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);
.fi
.SH "RETURN VALUE"
Returns the cosine of a fixed point binary format angle. The return value
will be in radians.

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