/// <summary>
/// Originally described at https://github.com/stevengj/nlopt/blob/master/src/api/optimize.c#L804
/// </summary>
private static void pre_max(int n, double[] x, int x_offset, double[] v, int v_offset, double[] vpre, int vpre_offset,
object[] data, int data_offset)
{
f_max_data d = (f_max_data)data[data_offset];
d.pre(n, x, x_offset, v, v_offset, vpre, vpre_offset, d.f_data, data_offset);
for (int i = 0; i < n; ++i)
{
vpre[i] = -vpre[i];
}
}
