Or more accurately:

sub ediag {
  return abs($_[0]) * abs($_[1]);
}

[download]

...or...

sub ediag {
  abs(shift) * abs(shift);
}

[download]

It's possible (maybe even probable) that since the OP showed one subroutine that did this:

sub one {
  sqrt( $_[0] * $_[0] * $_[1] * $_[1] )
}

[download]

...and another that did this:

sub another{
  sqrt( $_[0] * $_[0] + $_[1] * $_[1] )
}

[download]

...that we (I) should have been looking at his second example all along, and should have considered the first one a typo. If that's the case, then the square root of the sum of two squares does make more sense.


Dave

In reply to Re^3: Very basic question on performance by davido
in thread Very basic question on performance by morrin

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