Spint – Texas Instruments TMS320C67X/C67X+ DSP User Manual
Page 288
SPINT
Convert Single-Precision Floating-Point Value to Integer
3-228
Instruction Set
SPRU733
Convert Single-Precision Floating-Point Value to Integer
SPINT
Syntax
SPINT (.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 0 0 0 1 0 1 0 1 1 0 s p
3
1
5
5
1
1
1
Opcode map field used...
For operand type...
Unit
src2
dst
xsp
sint
.L1, .L2
Description
The single-precision value in src2 is converted to an integer and placed in dst.
Execution
if (cond)
int(src2) → dst
else
nop
Notes:
1) If src2 is NaN, the maximum signed integer (7FFF FFFFh or
8000 0000h) is placed in dst and the INVAL bit is set.
2) If src2 is signed infinity or if overflow occurs, the maximum signed integer
(7FFF FFFFh or 8000 0000h) is placed in dst and the INEX and OVER
bits are set. Overflow occurs if src2 is greater than 2
31
− 1 or less
than −2
31
.
3) If src2 is denormalized, 0000 0000h is placed in dst and INEX and DEN2
bits are set.
4) If rounding is performed, the INEX bit is set.