In the FreeFEM manual it is said that the function abs() should work on arrays of type real[int,int]. In practice, when I try to use it I get the error: Warning ambiguity Polymorphic Find 2. I have FreeFem 4.6 installed.
Is this the normal behavior? What is the proper way to compute the absolute value of every item of an array without looping?
Thank you, Beniamin