comiss

Compare Scalar Ordered Single-Precision

COMISS xmm1, xmm2/m32

Compares low float and sets EFLAGS (Signaling NaN raises exception).

Details

The Compare Scalar Ordered Single-Precision instruction compares low float and sets EFLAGS (Signaling NaN raises exception).

Pseudocode Operation

// Compares low float and sets EFLAGS (Signaling NaN raises exception)

Example

COMISS xmm1, xmm2/m32

Encoding

Binary Layout
0F
+0
2F
+1
 
Format SSE
Opcode 0F 2F
Extension SSE

Operands

  • src1
    XMM
  • src2
    XMM/Mem