I'll take one of these for "spritnf" please...
Your test suite is not a good one; you shouldn't declare asb to be global. Instead, you should just allow the function declaration to contain 'asb', as in:
function x = asb(x)
x = abs(x)
And do you _really_ think we should program MATLAB to try to fix your typos? That's a recipe for disaster!
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