Thread: Multiply by negative one
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Old 01-19-2017, 08:23
mcp mcp is offline
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You can move the value to a register and use NEG on it (assuming x86, 32 bit):
Code:
mov eax, [val]
neg eax
mov [val], eax
Alternatively, subtract from zero:
Code:
xor exc, ecx
mov eax, [val]
sub ecx, eax
mov [val], ecx
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