# Synopsis

PDX_MSGT gdx_GetCurveCurvature(long option, double (*derivs)[3], double *curvature)

# Purpose

Calculate the GDX curve curvature values

# Description

Given the curve 0th thru 2nd derivatives calculates the curve curvature. If first derivative has 0 magnitude and second derivative has non-0 magnitude, the curvature value is set to infinity (DBL_MAX). Otherwise, if both first and second derivative have 0 magnitude, the curvature is set to 0.

# Input

## option

Options (Not used)

## derivs

The curve derivatives at the desired S value

# Output

## curvature

The curve curvature

# Tolerances

ZERO_TOL

# Return

GDX_NOERR