'1.9041105342991877e+258' is a floating point value to a mathematician, but to perl it is a string.

Sorry, but that is a red-herring:

printf "% 25.17g\n", 1.9041105342991877e+258;;
  1.9041105342991886e+258

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In reply to Re^2: Determining the minimum representable increment/decrement possible? by BrowserUk
in thread Determining the minimum representable increment/decrement possible? by BrowserUk

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