NAME

Math::Round::SignificantFigures - Perl package for rounding numbers to a specified number of Significant Figures

SYNOPSIS

  use Math::Round::SignificantFigures qw{roundsigfigs};
  print roundsigfigs(555.555, 3), "\n";

DESCRIPTION

Math::Round::SignificantFigures supplies functions that will round numbers based on significant figures.

This package spans the controversy whether people prefer to call significant figures or significant digits. You may export either or both but, I called the package significant figures since that is the page for Wikipedia.

FUNCTIONS

The exporter group :figs exports the roundsigfigs, ceilsigfigs, floorsigfigs functions. The exporter group :digs exports the roundsigdigs, ceilsigdigs, floorsigdigs functions. The exporter group :all exports all six functions

roundsigfigs, roundsigdigs

Rounds a number given the number and a number of significant figures.

floorsigfigs, floorsigdigs

Rounds a number toward -inf given the number and a number of significant figures.

ceilsigfigs, ceilsigdigs

Rounds a number toward +inf given the number and a number of significant figures.

SEE ALSO

Math::Round supplies functions that will round numbers in different ways.

Math::SigDig allows you to edit numbers to a significant number of digits.

https://en.wikipedia.org/wiki/Significant_figures#Rounding_to_significant_figures

https://stackoverflow.com/questions/202302/rounding-to-an-arbitrary-number-of-significant-digits

AUTHOR

Michael R. Davis, MRDVT

COPYRIGHT AND LICENSE

MIT LICENSE

Copyright (C) 2022 by Michael R. Davis