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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 in-
       put 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), exup-
       date(3)

Allegro				 version 4.4.3			     fixcos(3)

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