Texas Instruments TMS320C67X/C67X+ DSP manual Cmpltsp

CMPLTSP Compare for Less Than, Single-Precision Floating-Point Values

				Compare for Less Than, Single-Precision Floating-Point Values
CMPLTSP
Syntax					CMPLTSP (.unit) src1, src2, dst
					.unit = .S1 or .S2
Compatibility					C67x and C67x+ CPU
Opcode
31	29	28	27	23		22	18	17	13	12	11	6	5	4	3	2	1	0

creg

z

dst

src2

src1

x

1 1 1 0 1 0 1

0 0 0

s p

3	1	5		5	5	1		1	1
			Opcode map field used... For operand type...					Unit
			src1		sp			.S1, .S2
			src2		xsp
			dst		sint
Description		Compares src1 to src2. If src1 is less than src2, then 1 is written to dst; other-
		wise, 0 is written to dst.
Execution		if (cond)		{
				if (src1 t src2) 1 → dst
				else 0 → dst
				}
		else		nop
		Special cases of inputs:
				Input			FAUCR Bits
			src1		src2	Output	UNORD	INVAL
			NaN		don’t care	0	1	1
			don’t care		NaN	0	1	1
			NaN		NaN	0	1	1
			+/−denormalized		+/−0	0	0	0
			+/−0		+/−denormalized	0	0	0
			+/−0		+/−0	0	0	0
			+/−denormalized		+/−denormalized	0	0	0
			+infinity		+infinity	0	0	0
			+infinity		other	0	0	0
			−infinity		−infinity	0	0	0
			−infinity		other	1	0	0

3-100 Instruction Set SPRU733