Yeah, substr abound, and yet, it's really quite fast.

You can speed up some of the substr usage by using four arguments instead of using substr as an lvalue.    For example: substr($num, $cx, 1, $noch + 1) instead of substr($num, $cx, 1) = ($noch + 1).

In reply to Re: RFC: Large Floating Point Numbers - Rounding Errors by jwkrahn
in thread RFC: Large Floating Point Numbers - Rounding Errors by GAVollink

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