Function nsl_sf_kernel_triangular

src/backend/nsl/nsl_sf_kernel.c:24–28

}

double nsl_sf_kernel_triangular(double u) {
	if (fabs(u) <= 1.0)
		return 1.0 - fabs(u);
	return 0.0;
}

double nsl_sf_kernel_parabolic(double u) {
	if (fabs(u) <= 1.0)