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(nasm.info)Section B.4.44

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B.4.44. `CVTPS2PI': Packed Single-Precision FP to Packed Signed INT32 Conversion
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     CVTPS2PI mm,xmm/mem64         ; 0F 2D /r        [KATMAI,SSE]

   `CVTPS2PI' converts two packed single-precision FP values from the
source operand to two packed signed doublewords in the destination
operand.

   The destination operand is an `MMX' register. The source can be
either an `XMM' register or a 64-bit memory location. If the source is a
register, the input values are in the low quadword.

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