|
ABS
|
Absolute value
|
ABS
|
|
ABSolute
|
[Syntax] ]
(1)ABS dest
(2)ABS src, dest
[Operation]
(1) if ( dest < 0 )
dest = -dest;
(2) if ( src < 0 )
dest = -src;
else
dest = src;
[Function]
- | (1)This instruction takes the absolute value of dest and places the result in dest. |
- | (2)This instruction takes the absolute value of src and places the result in dest. |
[Instruction Format]
|
|
|
|
|
|
|
|
|
ABS dest
|
|
-
|
Rd
|
|
|
ABS src, dest
|
|
Rs
|
Rd
|
|
[Flag Change]
Conditions
Z : The flag is set when dest is 0 after the operation; otherwise it is cleared.
S : The flag is set when the MSB of dest after the operation is 1; otherwise it is cleared.
O : (1)The flag is set if dest before the operation was 80000000h; otherwise it is cleared.
(2)The flag is set if src before the operation was 80000000h; otherwise it is cleared.
[Description Example]
ABS R2
ABS R1, R2
