freebsd man page for fixsin

fixsin(3alleg4) 						  Allegro manual						   fixsin(3alleg4)

NAME

       fixsin - Fixed point sine of binary angles. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       fixed fixsin(fixed x);

DESCRIPTION

       This function finds the sine of a value using a lookup table. The input value must be a fixed point binary angle. Example:

	  fixed angle;
	  int result;

	  /* Set the binary angle to 90 degrees. */
	  angle = itofix(64);
	  /* The sine of 90 degrees is one. */
	  result = fixtoi(fixsin(angle));
	  ASSERT(result == 1);

RETURN VALUE

       Returns the sine 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						   fixsin(3alleg4)