frc - Fraction

frc     dest, src

Name	Registers
dest	A temporary register
src	A temporary register, input register, or floating-point constant register.

You cannot specify the same register for src and dest.

Finds the difference between src and the largest integer that is not greater than src, then stores the result in dest.

dest.x = src.x - floor ( src.x )
dest.y = src.y - floor ( src.y )
dest.z = src.z - floor ( src.z )
dest.w = src.w - floor ( src.w )

flr     dest, src
add     dest, src, -dest

frc     r0, v1

	1	2	3	4	5	6
flr	read	FLOOR	write
add		STALL	read	ADD	post	write

2011/12/20

Initial version.