Texas Instruments TMS320C67X/C67X+ DSP - Manual (Page 180)

INTDPU Convert Unsigned Integer to Double-Precision Floating-Point Value
3-120 Instruction Set SPRU733
Example INTDPU .L1 A4,A1:A0
Before instruction 5 cycles after instruction
A4 FFFF FFDEh 4294967262 A4 FFFF FFDEh 4294967262
A1:A0 xxxx xxxxh xxxx xxxxh A1:A0 41EF FFFFh FBC0 0000h 4.2949673 E09