abs
Definition: | atom x2 = abs(atom x1) |
Description: | Calculate the absolute (unsigned) value of x1. |
Comments: | This function may be applied to an atom or sq_abs() to all elements of a sequence. The rules for sequence operations apply. |
Example: |
r = abs(-4) -- r is 4 |
Implementation: | See builtins\pmaths.e (an autoinclude) for details of the actual implementation. |