# How-to: Use the library of .Net Math functions

In addition to standard PowerShell methods we can also call .Net Math functions:

``` .NET Math library:

[math]::Round(\$var, p)  Round a variable to p places.
[math]::Round(\$var)
[math]::Abs(n)
[math]::BigMul
[math]::Ceiling(n)   Rounds everything up, towards positive infinity.
[math]::DivRem
[math]::Equals(n,m)  Compare two values and return a [boolean] (true/false) result. (unlike -eq the types must also match)
[math]::Exp(p)       Raise e to a power p
[math]::Floor(n)     Rounds everything down, towards negative infinity.
[math]::GetHashCode
[math]::GetType
[math]::Log(n)    base e logarithm of n
[math]::Log10(n)  base 10 logarithm of n
[math]::Max(n,m)  Return the larger of two values
[math]::Min(n,m)  Return the smaller of two values
[math]::Pow(n,p)  Raise a number n to a power p
[math]::IEEERemainder
[math]::Round(n,p) Round a number n to p decimal places. Default=0 decimal places.
[math]::Sign
[math]::Sqrt(n)   Square Root of a number n
[math]::ToString
[math]::Truncate(n)  Remove the decimal returning only an Integer. Rounds toward zero.

The trig functions all accept an angle, measured in radians.
To convert degrees to radians multiply by pi/180 using [Math]::PI

[math]::Acos
[math]::Asin
[math]::Atan
[math]::Atan2
[math]::Cos
[math]::Cosh
[math]::Sin
[math]::Tan
[math]::Sinh
[math]::Tanh

Static mathematical constants:
[math]::e
[math]::pi```

You can list all the static memners of system.math like this: (via /\/\o\/\/ )

` [system.math] | gm -static`

Examples

Find the Minimum value of two variables:

\$var1 = 764.4
\$var2 = 1409
\$answer = [math]::min(\$var1,\$var2)
\$answer

Find the Tangent of 45 degrees:

\$answer = [System.Math]::Tan(45/180*[System.Math]::PI)
\$answer

“ Film is one of the three universal languages, the other two: mathematics and music” ~ Frank Capra

Related PowerShell Cmdlets:

math.class - MSDN scroll down for full definitions.
Concatenation - Several methods to combine strings together.
PowerShell Operators - More advanced Operators for Arrays and formatting expressions.

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