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An RPN calculator written in C

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Octocat-spinner-32 .gitignore
Octocat-spinner-32 Makefile
Octocat-spinner-32 README.textile
Octocat-spinner-32 posty.c
Octocat-spinner-32 posty.h
README.textile

A simple Reverse Polish Notation, or postfix style calculator.

Usage:

posty [-v]
	-v	enable stack dumps (for debugging)

In interactive mode, you have two choices:

  • Enter a postfix style expression to be evaluated (supports +, -, /, *, ^, %)
  • Advanced functions: sqrt, sin, cos, tan, asin, acos, atan
  • Support for constants: pi and e
  • Enter :N to set decimal precision, where N is the number of digits displayed to the right of the decimal. Note that this can also be part of an expression.
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