Editing Expression Components and Instructions (section)

=== Function ===
 f [function]
The '''f''' instruction gets the value on the stack, applies the function, then pushes the value. The function used can be:
{| class="wikitable"
|+
|neg
|Negate the value
|-
|sin
|[[wikipedia:Sine_and_cosine|Sine]] function (in degrees)
|-
|cos
|[[wikipedia:Sine_and_cosine|Cosine]] function (in degrees)
|-
|tan
|[[wikipedia:Trigonometric_functions#tangent|Tangent]] function (in degrees)
|-
|abs
|[[wikipedia:Absolute_value|Absolute Value]] function
|-
|sqrt
|[[wikipedia:Square_root|Square Root]]
|-
|av
|Multiplies value by 0.1
|-
|floor
|Outputs the [[wikipedia:Floor_and_ceiling_functions|floor]] (lowest integer) of a value 
|-
|ceil
|Outputs the [[wikipedia:Floor_and_ceiling_functions|ceiling]] (highest integer) of a value 
|-
|round
|[[wikipedia:Rounding|Rounds]]<nowiki/>the value
|-
|asin
|[[wikipedia:Inverse_trigonometric_functions|Inverse Sine]] function
|-
|acos
|[[wikipedia:Inverse_trigonometric_functions|Inverse Cosine]] function
|-
|atan
|[[wikipedia:Inverse_trigonometric_functions|Inverse Tangent]] function
|-
|log
|[[wikipedia:Logarithm|Logarithm]] function
|-
|exp
|[[wikipedia:Exponentiation|Exponentation]] function
|-
|rand_0_1
|Unimplemented, makes value 0. (It is meant to randomly generate between 0 and 1)
|}
Function info from Skyth

For example:
 = 0 v 1 f av
would set the X position of the bone to 0.1 (since the 1 is multiplied by 0.1)