Subtracts the contents of n1 from the contents of n2 and stores
the result in n2.
This is equivalent to: n2 = n2 - n1.
DATA NUMBER TYPE P VALUE 3, RESULT TYPE I VALUE 7. SUBTRACT NUMBER FROM RESULT.
The field RESULT now contains 4; the value of NUMBER remains unchanged at 3.
The remarks about conversions and performance under
COMPUTE_ARITH apply equally to SUBTRACT.
The runtime required to subtract two numbers of type I or F is approx. 2 msn (standardized microseconds). For numbers of type P, about 9 msn are needed.
Non-catchable runtime error