Texas Instruments TMS320C67X/C67X+ DSP Absolute Value, Double-Precision Floating-Point, Absdp

ABSDP Absolute Value, Double-Precision Floating-Point

				Absolute Value, Double-Precision Floating-Point
ABSDP
Syntax					ABSDP (.unit) 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

reserved

x

1 0 1 1 0 0 1

0 0 0 s p

3 15511 1

Opcode map field used...	For operand type...	Unit
src2	dp	.S1, .S2
dst	dp

Description	The absolute value of src2 is placed in dst. The 64-bit double-precision
	operand is read in one cycle by using the src2 port for the 32 MSBs and the
	src1 port for the 32 LSBs.
Execution	if (cond)		abs(src2) → dst
	else		nop
	The absolute value of src2 is determined as follows:
	1)	If src2 w 0, then src2 → dst
	2)	If src2 t 0, then −src2 → dst

Notes:

1)If scr2 is SNaN, NaN_out is placed in dst and the INVAL and NAN2 bits are set.

2)If src2 is QNaN, NaN_out is placed in dst and the NAN2 bit is set.

3)If src2 is denormalized, +0 is placed in dst and the INEX and DEN2 bits are set.

4)If src2 is +infinity or −infinity, +infinity is placed in dst and the INFO bit is set.

3-40 Instruction Set SPRU733