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Perl 5 Numeric Formats

Type                     Format               Example Integer                  NN                   12 Floating point           NN.NN                342.176 Scientific               NN.NNENN             42.04E-6 Big number               NN_NNN_NNN           6_000_000 Hexadecimal              0xNNNN               0xFFD3 Octal                    0NNN                 0374