Cmpeqsp (Compare For Equality, Single-Precision Floating-Point Values) - Texas Instruments TMS320C67X Reference Manual

CMPEQSP
Compare for Equality, Single-Precision Floating-Point Values
CMPEQSP
Syntax
Compatibility
Opcode
31 29 28 27
creg z dst
3 1 5
Description
Execution
3-84 Instruction Set
Compare for Equality, Single-Precision Floating-Point Values
CMPEQSP (.unit) src1, src2, dst
.unit = .S1 or .S2
C67x and C67x+ CPU
23 22 18
src2
5
Opcode map field used...
src1
src2
dst
Compares src1 to src2. If src1 equals src2, then 1 is written to dst; otherwise,
0 is written to dst.
if (cond) {
if (src1 == src2) 1 → dst
else 0 → dst
}
else nop
Special cases of inputs:
Input
src1
NaN don't care
don't care
NaN
+/−denormalized
+/−0 +/−denormalized
+/−0
+/−denormalized +/−denormalized
+infinity
+infinity
−infinity
−infinity
17 13 12 11
src1 x 1
5 1
For operand type...
sp
xsp
sint
src2
Output
0
NaN 0
NaN 0
+/−0 1
1
+/−0 1
1
+infinity 1
other 0
−infinity 1
other 0
6 5 4 3
1 1 0 0 0 1 0 0 0 s p
Unit
.S1, .S2
FAUCR Bits
UNORD INVAL
1 0
1 0
1 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
SPRU733
2 1 0
1 1