# Synopsis

PDX_MSGT gdx_ApproxTrimCurve(long option, T_GDX_TRIM_CURVE *gdx_trim_curve)

# Purpose

Linear approximate a GDX Trim curve

# Description

Performs linear approximation of a GDX trim curve entity within the GDX linear approximation subsystem workspce. The GDX linear approximation must have been previously allocated before approximation can be performed (See gdx_AllocateApprox).

# Input

## option

Not used

## gdx_trim_curve

The GDX trim curve entity data structure

# Tolerances

          ZERO_TOL
          CONVERGE_TOL
          .fi

# Return

          GDX_NOERR
          Low level error return
          .fi