operatorsnofields

Documentation

Overview

Package operatorsnofields implements postfix calculator in one loop by editing the string containing the calculation.

Index

• func RPNOperatorsNoFields(RPNInput string) float64

Examples

• RPNOperatorsNoFields
• RPNOperatorsNoFields (Exp)

Functions

func RPNOperatorsNoFields

func RPNOperatorsNoFields(RPNInput string) float64

RPNOperatorsNoFields returns the result of a sequence of operations written in postfix notation (reverse polish notation).

Each operation is replaced by its result until only a number is left. It fails failing if the expression is invalid. An invalid sign is interpreted as a value and the next operation panics.

The list of operators is searched using package strings. The search avoids to break a second loop but does not provide any major improvement.

Example

if fmt.Print has an output (debug mode)

fmt.Printf("%f", RPNOperatorsNoFields(values.RPNInput))

Output:

30.000000

Example (Exp)

fmt.Printf("%.13f", RPNOperatorsNoFields(values.Input))

Output:

3.0001220703125