sincos - Sine and cosine

sincos  dest{ .x | .y | .xy }, src0{ .x | .y | .z | .w }, src1, src2

Name	Registers
dest	A temporary register. Must specify any one of { .x | .y | .xy } as the mask for dest. The cosine value is output to x and the sine value is output to y. The specified component must have a value between -π and π.
src0	A temporary register or input register. Must specify any one of { .x | .y | .z | .w } as the component.
src1	A temporary register. Cannot specify swizzling or the negative sign.
src2	A temporary register. Cannot specify swizzling or the negative sign.

A different register must be specified for each operand.
The content of the z component in dest is not preserved because it is used during calculations.
The calculation process uses src1 and src2.

The floating-point constant registers c93, c94, and c95 are automatically defined because Taylor expansions require several coefficients.
You cannot use this instruction and define either c93, c94, or c95 using the def instruction.

Calculates the sine and cosine of the component value specified by src0 and stores the result in dest. The units used are radians.
This macro calculates an approximate value using a Taylor expansion.

tmp = src0{ .x | .y | .z | .w }
dest.x = cos ( tmp )
dest.y = sin ( tmp )
dest.z = undefined // This is used during calculations

def     c93, 0xbe0000, 0xbc5555, 0x3f0000, 0x3f0000 // -0.5,   -1/3!,  1.0,  1.0
def     c94, 0xb56c16, 0xb2a01a, 0x3a5555, 0x381111 // -1/6!,  -1/7!,  1/4!, 1/5!
def     c95, 0xa927e4, 0xa5ae64, 0x2fa01a, 0x2c71de // -1/10!, -1/11!, 1/8!, 1/9!

mov    src1 , c95
mov    src2 , c94
mul     dest.z,  src0{ .x | .y | .z | .w }, src0{ .x | .y | .z | .w }
mad     dest.xy, dest.z, src1.xy, src1.zw
mad     dest.xy, dest.z, dest.xy, src2.xy
mad     dest.xy, dest.z, dest.xy, src2.zw
mov    src1 , c93
mad     dest.xy, dest.z, dest.xy, src1.xy
mad     dest.xy, dest.z, dest.xy, src1.zw
mul     dest.y,  dest.y, src0{ .x | .y | .z | .w }

sincos  r0.xy, v1.x, r2, r3

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29
mov	read	mov	write
mov		read	mov	write
mul			read	MUL	post	write
mad				STALL		read	MUL	ADD	post	write
mad							STALL			read	MUL	ADD	post	write
mad											STALL			read	MUL	ADD	post	write
mov															read	mov	write
mad																STALL		read	MUL	ADD	post	write
mad																			STALL			read	MUL	ADD	post	write
mul																							STALL			read	MUL	post	write

2011/12/20

Initial version.