Yes, Dave, you are correct, it should rather be something like: 
return abs ( $_[0] * $_[1]);

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But my point was really to say that, although I am very often using named variables for better clarity (and also to avoid changing inadvertently the parameter in the calling function), I found that, in this case, the ediag function is in my humble opinion actually clearer than the vdiag function, because you can see immediately the math expression being returned to the caller.

In reply to Re^4: Very basic question on performance by Laurent_R
in thread Very basic question on performance by morrin

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