Multicore from a different angle Post: 92249

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fixcos

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)