# Synopsis

(macro) void gdx_UnNormParmValue(long option, double norm_parm, double low_parm, double high_parm, double *parm)

# Purpose

Unnormalize a parameter value.

# Description

Calculates the actual parameter value from the normalized (0.0 - 1.0) parameter value.

# Input

## option

Option (Not used)

## norm_parm

The normalized (0.0 - 1.0 inclusive) parameter

## low_parm

The actual low parameter value

## high_parm

The actula high parameter value

# Output

## parm

The actual un-normalized parameter value