Spdp – Texas Instruments TMS320C67X/C67X+ DSP User Manual
Page 286
SPDP
Convert Single-Precision Floating-Point Value to Double-Precision Floating-Point Value
3-226
Instruction Set
SPRU733
Convert Single-Precision Floating-Point Value to Double-Precision
Floating-Point Value
SPDP
Syntax
SPDP (.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
0 0 0 0 0 x 0 0 0 0 1 0 1 0 0 0 s p
3
1
5
5
1
1
1
Opcode map field used...
For operand type...
Unit
src2
dst
xsp
dp
.S1, .S2
Description
The single-precision value in src2 is converted to a double-precision value and
placed in dst.
Execution
if (cond)
dp(src2) → dst
else
nop
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 0 is placed in dst and
the INEX and DEN2 bits are set.
4) If src2 is signed infinity, INFO bit is set.
5) No overflow or underflow can occur.