num::fill_grid

Defined in header <pde/stencil.hpp>

template <std::invocable<double, double> F>
void fill_grid(vec<real> &u, int N, double h, F &&f);  // (1)

template <std::invocable<double, double> F>
void fill_grid(scalar_field_2d &g, F &&f);  // (2)

Fill grid values at \(x_i=(i+1)h,\ y_j=(j+1)h\).