Function - Calculates a power.
EXP : REAL/LREAL Exponent
Q : REAL/LREAL Result: IN at the 'EXP' power
Alternatively, in ST language, the "**" operator can be used. In LD language, the operation is executed only if the input rung (EN) is TRUE. The output rung (ENO) keeps the same value as the input rung. In IL, the input must be loaded in the current result before calling the function. The exponent (second input of the function) must be the operand of the function.
Q := POW (IN, EXP);
Q := IN ** EXP;
(* The function is executed only if EN is
(* ENO keeps the same value as EN *)
Op1: LD IN
ST Q (* Q is: (IN ** EXP) *)
ABS TRUNC LOG SQRT