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The power function
power(x) is an integer power and thus the exponent must be an integer.
This is not required for the ** operator. x**2 is a real power and gets evaluated as exp(2*log(x)). However, with the ** operator the exponent must be a positive number to avoid an execution error. So:
scalar test; test = (-3)**4; * note: this is not the same as -3**4,which will be treated as -(3**4) display test;
will give you an error:
**** Exec Error at line 2: rPower: FUNC DOMAIN: x**y, x < 0
This formulation will work:
scalar test; test = power(-3,4); display test;