302
Manual – IPOSplus®
23
Arithmetic commands
Assembler – Commands
23.3 Arithmetic commands
23.3.1 Fundamental operations ADD / SUB / MUL / DIV
The four basic arithmetical functions are performed taking account of signs. They can
also be performed with variables H and constants K. The 1st argument is always a vari-
able H, the 2nd argument can either be a second variable H or a constant K.
ADD The ADD command adds a variable to a constant and a variable (observing the signs).
SUB/SUBTRACT The SUB command subtracts a variable or constant from a variable (observing the
signs).
Command structure
Mxxx ADD X1 + X2
Mxxx: Label (optional)
X1: Variable (summand and sum)
X2: Variable or constant (summand)
ADD HXX + HYY Variable HXX is the sum of variables HXX and HYY.
ADD HXX + K Variable HXX is the sum of variables HXX and a constant K.
Example 1 SET H01 = 100ADD H01 + H01
After the ADD command, H01 = 200.
Example 2 SET H01 = 100ADD H01 + 1
After the ADD command, H01 = 101.
Example 3 SET H01 = 2000000000SET
H02 = 2000000000ADD H01 +
H02
[0x77359400][0x77359400][0
xEE6B2800]
The number range has been exceeded.
After addition, H01 has the value -294967296.
Note If the number range is exceeded during addition, the result is incorrect.
There is no error message.
Command structure
Mxxx SUB X1 - X2
Mxxx: Label (optional)
X1: Variable (minuend and difference)
X2: Variable or constant (subtrahend)
SUB HXX - HYY Variable HXX is the result of the subtraction of variables HXX and HYY.
SUB HXX - K Variable HXX is the result of the subtraction of variables HXX and a con-
stant K.
Example 1 SET H01 = -10SET H02 = +50SUB H01 - H02
After the SUB command, H01 = -60.
Example 2 SET H01 = +50SET H02 = -
2147483600SUB H01 - H02
[0x00000032][0x80000030][0
x80000002]
The number range has been exceeded. After subtraction, H01 has the
value -2147483646.
Note If the number range is exceeded during subtraction, the result is incorrect.
There is no error message.
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