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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 4.4.2			     fixcos(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO

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