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GNU Info (nasm.info)Section B.4.318B.4.318. `UCOMISD': Unordered Scalar Double-Precision FP compare and set EFLAGS ------------------------------------------------------------------------------- UCOMISD xmm1,xmm2/m128 ; 66 0F 2E /r [WILLAMETTE,SSE2] `UCOMISD' compares the low-order double-precision FP numbers in the two operands, and sets the `ZF', `PF' and `CF' bits in the `EFLAGS' register. In addition, the `OF', `SF' and `AF' bits in the `EFLAGS' register are zeroed out. The unordered predicate (`ZF', `PF' and `CF' all set) is returned if either source operand is a `NaN' (`qNaN' or `sNaN'). automatically generated by info2www version 1.2.2.9 |