https://github.com/kaz-utashiro/getopt-ex-rpn

RPN calculation module for Getopt::EX command option
https://github.com/kaz-utashiro/getopt-ex-rpn

Last synced: 8 days ago
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RPN calculation module for Getopt::EX command option

• Host: GitHub
• URL: https://github.com/kaz-utashiro/getopt-ex-rpn
• Owner: kaz-utashiro
• License: other
• Created: 2022-09-28T14:33:04.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2022-09-28T23:23:26.000Z (over 2 years ago)
• Last Synced: 2024-11-08T07:17:19.959Z (2 months ago)
• Language: Perl
• Size: 12.7 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: Changes
  • License: LICENSE

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# NAME

Getopt::EX::RPN - RPN calculation module for Getopt::EX command option

# SYNOPSIS

    use Getopt::EX::RPN qw(rpn_calc);

# DESCRIPTION

Getopt::EX::RPN is a wrapper for [Math::RPN](https://metacpan.org/pod/Math%3A%3ARPN) package which implement

Reverse Polish Notation calculation.  **rpn\_calc** function in this

package takes additional `HEIGHT` and `WIDTH` token which describe

terminal height and width.

**rpn\_calc** recognize following tokens (case-insensitive) and numbers,

and ignore anything else.  So you can use any other character as a

delimiter.  Delimiter is not necessary if token boundary is clear.

    HEIGHT  WIDTH

    {   }

    +,ADD  ++,INCR  -,SUB  --,DECR  *,MUL  /,DIV  %,MOD  POW  SQRT

    SIN  COS  TAN

    LOG  EXP

    ABS  INT

    &,AND  |,OR  !,NOT  XOR  ~

    <,LT  <=,LE  =,==,EQ  >,GT  >=,GE  !=,NE

    IF

    DUP  EXCH  POP

    MIN  MAX

    TIME

    RAND  LRAND

Since module [Getopt::EX::Func](https://metacpan.org/pod/Getopt%3A%3AEX%3A%3AFunc) uses comma to separate parameters,

you can't use comma as a token separator in RPN expression.  This

package accept expression like this:

    &set(width=WIDTH:2/,height=HEIGHT:DUP:2%-2/)

# AUTHOR

Kazumasa Utashiro

# LICENSE

Copyright 2022 Kazumasa Utashiro.

This library is free software; you can redistribute it and/or modify

it under the same terms as Perl itself.