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(nasm.info)Section B.4.39

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B.4.39. `CVTPD2PS': Packed Double-Precision FP to Packed Single-Precision FP Conversion
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     CVTPD2PS xmm1,xmm2/mem128     ; 66 0F 5A /r     [WILLAMETTE,SSE2]

   `CVTPD2PS' converts two packed double-precision FP values from the
source operand to two packed single-precision FP values in the low
quadword of the destination operand. The high quadword of the
destination is set to all 0s.

   The destination operand is an `XMM' register. The source can be
either an `XMM' register or a 128-bit memory location.

   For more details of this instruction, see the Intel Processor
manuals.