Texas Instruments TMS320C67X/C67X+ DSP manual RCPDP, Rsqrsp, Before instruction

RCPSP Single-Precision Floating-Point Reciprocal Approximation

Notes:

1)If src2 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 a signed denormalized number, signed infinity is placed in dst and the DIV0, INFO, OVER, INEX, and DEN2 bits are set.

4)If src2 is signed 0, signed infinity is placed in dst and the DIV0 and INFO bits are set.

5)If src2 is signed infinity, signed 0 is placed in dst.

6)If the result underflows, signed 0 is placed in dst and the INEX and UNDER bits are set. Underflow occurs when 2126 t src2 t infinity.

Pipeline
	Pipeline	E1
	Stage
	Read	src2
	Written	dst
	Unit in use	.S

Instruction Type	Single-cycle
Delay Slots	0
Functional Unit	1
Latency
See Also	RCPDP, RSQRSP
Example	RCPSP .S1		A1,A2
		Before instruction
	A1			4.0	A1
		4080	0000h
	A2	xxxx xxxxh			A2

1 cycle after instruction

4080 0000h 4.0

3E80 0000h 0.25

3-200 Instruction Set SPRU733