Quote:Original post by Raghar
xor would work as well. BTW Have you looked into Intel's manuals?
Quote:
Printed copies of the IA-32 Intel® Architecture Software Developer's Manuals, Volumes 1-3 are not available at this time. Please check back in early May to order the manuals.
Quote:Original post by Raghar
xor would work as well.
Quote:Original post by gumpy macdrunken
intel manuals (they're 100% free when available)Quote:
Printed copies of the IA-32 Intel® Architecture Software Developer's Manuals, Volumes 1-3 are not available at this time. Please check back in early May to order the manuals.
Quote:Original post by bakery2k1
neg eax
xor ebx, ebxsub ebx, eax // result is now in ebxxor eax, -1sub eax, -1Quote:Original post by dustamulet
Hmmm....I'm pretty sure the only way to negate a number in assembly is to use xor somehow........
Quote:Original post by dustamulet
Hmmm....I'm pretty sure the only way to negate a number in assembly is to use xor somehow........
Quote:Original documentation by Intel
NEG-Two's Complement NegationOpcode Instruction 64-Bit Mode Compat/Leg Mode DescriptionF6 /3 NEG r/m8 Valid Valid Two's complement negate r/m8.REX + F6 /3 NEG r/m8* Valid N.E. Two's complement negate r/m8.F7 /3 NEG r/m16 Valid Valid Two's complement negate r/m16.F7 /3 NEG r/m32 Valid Valid Two's complement negate r/m32.REX.W + F7 /3 NEG r/m64 Valid N.E. Two's complement negate r/m64.
Description
Replaces the value of operand (the destination operand) with its two's complement. (This operation is equivalent to subtracting the operand from 0.) The destination operand is located in a general-purpose register or a memory location.
