Syntax
VAR16 -= value16 |
subtract from VAR16 value16 |
VAR16D -= VAR16S |
subtract from VAR16D VAR16S value |
VAR32 -= value32 |
subtract from VAR32 value32 |
VAR32D -= VAR32S |
subtract from VAR32D VAR32S value |
| Operands | VAR16D: destination integer variable |
VAR16S: source integer variable
VAR32D: destination long/fixed variable
VAR32S: source long/fixed variable
value16: 16-bit immediate integer value
value32: 32-bit immediate long value
Binary code
| Description | Subtracts a 16-bit / 32-bit immediate value or the value of the 16-bit / 32-bit source variable from the 16-bit / 32-bit destination variable. The instructions use a 9-bit short address for the destination variable. Bit value X specifies the destination address range: |
Execution Destination variable = destination variable - immediate value or source variable
Example
int Var1, Var2, Var3;
long Var10, Var11, Var12;
...
Var1 -= 125;
Var3 -= Var2;
Var10 -= 128000;
Var12 -= Var11;
Before instruction |
|
After instruction |
||
Var1 |
1256 |
|
Var1 |
1131 |
Var2 |
-22450 |
|
Var2 |
-22450 |
Var3 |
22500 |
|
Var3 |
44950 |
Var10 |
-1201 |
|
Var10 |
-129201 |
Var11 |
25 |
|
Var11 |
25 |
Var12 |
12500 |
|
Var12 |
12475 |