A.5.49 CVTSS2SD: Scalar Single-Precision FP to Scalar Double-Precision FP
Conversion
CVTSS2SD xmm1,xmm2/mem32 ; F3 0F 5A /r [WILLAMETTE,SSE2]
CVTSS2SD converts a single-precision FP value from the source operand
to a double-precision FP value in the low quadword of the destination
operand. The upper quadword is left unchanged.
The destination operand is an XMM register. The source can be either an
XMM register or a 32-bit memory location. If the source is a register,
the input value is contained in the low doubleword.
For more details of this instruction, see the Intel Processor manuals.