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In the assembly opcode cmovl, what gets compared? For example: EAX: 00000002 EBX: 00000001
cmovl eax,ebx
What is the result? Which one needs to be less so they can be moved?
Thank you!
949
cmovl means "perform move if previous comparison resulted in "less than". For beginners: Note 1: cmovl responds to flags in the flag register. In particular, it performs a move if SF!=
You can use the SUB or CMP command.
Some instructions don't alter flags (mov in particular). So in case 1 the je is using the flags set by cmp . Case 2, jns is using the flags set by test .
(Environmental Audio Extensions) Sound card functions that reproduce the reverberation effects heard in different environments. Developed by Creative Labs, EAX provides an extension to the Windows DirectSound and OpenAL programming interfaces.
cmov doesn't do a comparison, it uses the result of a previous comparison - if it is true, it will perform the mov. cmovl means "perform move if previous comparison resulted in "less than".
For example:
cmp ecx, 5
cmovl eax, ebx ; eax = ebx if ecx < 5
It should be preceded by another instruction that sets flags appropriately, like cmp.
cmp ebx, ecx ; compare ebx to ecx and set flags.
cmovl ebx, eax ; if (ebx < ecx (comparison based on flags)) ebx = eax
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