Math.psm1
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$MathEvaluator = new-object LoreSoft.MathExpressions.MathEvaluator function Invoke-MathEvaluator { <# .SYNOPSIS Evaluates mathematical expressions, with support for basic functions (sqrt, cos, etc.) and conversions ([in->ft] and [ft->m] etc.) and variables. .DESCRIPTION This is currently using the old LoreSoft.Calculator engine https://github.com/loresoft/Calculator It supports: - Math expressions as strings, including grouping - Trigonometry and various other functions - Common unit conversions in Length, Mass, Speed, Temperature, Time, and Volume - Variables including the last "answer" .EXAMPLE math 2^5 32 .EXAMPLE math "(2 ^ 3) * sqrt(pi)" 14.179630807244127 .EXAMPLE math "120 [in->ft]" 10 C:\PS> math answer [ft->m] 3.048 #> [Alias("ime", "math", "calc", "c")] [CmdletBinding()] param( # A mathematical expression [Parameter(ValueFromPipeline, ValueFromPipelineByPropertyName, ValueFromRemainingArguments)] [string[]]$Expression ) end { Write-Verbose "$Expression" $MathEvaluator.Evaluate("$Expression") } } function Set-MathVariable { <# .SYNOPSIS Set a variable that's usable for math expressions. Note that the values are currently always stored using doubles. .EXAMPLE Set-MathVariable α 2.5029 Defines an approximation of one of Feigenbaum's constants .EXAMPLE Set-MathVariable δ 4.6692 Defines an approximation of one of Feigenbaum's constants .EXAMPLE Set-MathVariable φ 1.618033988749895 Defines an approximation of the golden ratio #> [Alias("smv")] [CmdletBinding()] param( # The name of the variable [Parameter(Mandatory)] [string]$Name, # The value of the variable (as a double) [Parameter(Mandatory)] [double]$Value ) end { $MathEvaluator.Variables[$Name] = $Value } } Export-ModuleMember -Function * -Alias * -Variable MathEvaluator |