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(nasm.info)Section B.4.26

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B.4.26. `CMPccPS': Packed Single-Precision FP Compare
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     CMPPS xmm1,xmm2/mem128,imm8   ; 0F C2 /r ib     [KATMAI,SSE]

     CMPEQPS xmm1,xmm2/mem128      ; 0F C2 /r 00     [KATMAI,SSE]
     CMPLTPS xmm1,xmm2/mem128      ; 0F C2 /r 01     [KATMAI,SSE]
     CMPLEPS xmm1,xmm2/mem128      ; 0F C2 /r 02     [KATMAI,SSE]
     CMPUNORDPS xmm1,xmm2/mem128   ; 0F C2 /r 03     [KATMAI,SSE]
     CMPNEQPS xmm1,xmm2/mem128     ; 0F C2 /r 04     [KATMAI,SSE]
     CMPNLTPS xmm1,xmm2/mem128     ; 0F C2 /r 05     [KATMAI,SSE]
     CMPNLEPS xmm1,xmm2/mem128     ; 0F C2 /r 06     [KATMAI,SSE]
     CMPORDPS xmm1,xmm2/mem128     ; 0F C2 /r 07     [KATMAI,SSE]

   The `CMPccPS' instructions compare the two packed single-precision FP
values in the source and destination operands, and returns the result of
the comparison in the destination register. The result of each
comparison is a doubleword mask of all 1s (comparison true) or all 0s
(comparison false).

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

   The third operand is an 8-bit immediate value, of which the low 3
bits define the type of comparison. For ease of programming, the 8
two-operand pseudo-instructions are provided, with the third operand
already filled in.  The  `Condition Predicates' are:

     EQ     0   Equal
     LT     1   Less-than
     LE     2   Less-than-or-equal
     UNORD  3   Unordered
     NE     4   Not-equal
     NLT    5   Not-less-than
     NLE    6   Not-less-than-or-equal
     ORD    7   Ordered

   For more details of the comparison predicates, and details of how to
emulate the "greater-than" equivalents, see *Note Section B.2.3::