Texas Instruments TMS320C67X/C67X+ DSP - Manual (Page 178)

INTDP Convert Signed Integer to Double-Precision Floating-Point Value
3-118 Instruction Set SPRU733
Example INTDP .L1x B4,A1:A0
Before instruction 5 cycles after instruction
B4 1965 1127h 426053927 B4 1965 1127h 426053927
A1:A0 xxxx xxxxh xxxx xxxxh A1:A0 41B9 6511h 2700 0000h 4.2605393 E08