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INTSPU Convert Unsigned Integer to Single-Precision Floating-Point Value
3-122 Instruction Set SPRU733
Convert Unsigned Integer to Single-Precision Floating-Point Value
INTSPU
Syntax INTSPU (.unit) src2, dst
.unit = .L1 or .L2
Compatibility C67x and C67x+ CPU
Opcode
31 29 28 27 23 22 18 17 13 12 11 5 4 3 2 1 0
creg z dst src2 0 0 0 0 0 x 1 0 0 1 0 0 1 1 1 0 s p
3 1 5 5 1 1 1
Opcode map field used... For operand type... Unit
src2
dst
xuint
sp
.L1, .L2
Description The unsigned integer value in src2 is converted to single-precision value and
placed in dst.
Execution if (cond) sp(src2) → dst
else nop
The only configuration bit that can be set is the INEX bit and only if the mantissa
is rounded.
Pipeline
Stage
E1 E2 E3 E4
Read src2
Written dst
Unit in use
.L
Instruction Type 4-cycle
Delay Slots 3
Functional Unit
Latency
1
See Also INTDP, INTDPU, INTSP
Example
INTSPU .L1X B1,A2
Before instruction 4 cycles after instruction
B1
FFFF FFDEh
4294967262 B1 C020 0000h 4294967262
A2 xxxx xxxxh A2 4F80 0000h 4.2949673 E09
Pipeline