Synopsis

PDX_MSGT gdx_EvalConicDerivs(long option, T_GDX_CONIC *gdx_conic, int max_deriv, double s_par, double (*derivs)[3])

Purpose

Evaluate derivatives on a GDX conic curve

Description

For a give S parameter value, evaluates the requested derivatives on a GDX conic curve. The s_par parameter values is the unnormalized conic parameter value by default. A max_deriv > 4 returns 0.0 derivative values.

Input

option

GDX_UNNORM

Unnormalize the parameter value

gdx_conic

The GDX conic curve data structure

max_deriv

The maximium deriviative desired

s_par

The parameter value

Output

derivs

The 3D deriviatives

Return

      GDX_NOERR
      GDX_PARMOUTOFRANGE
      .fi