Function lanczos3

utils/resize_right/interp_methods.py:54–57

(x)

@support_sz(6)
def lanczos3(x):
    fw, to_dtype, eps = set_framework_dependencies(x)
    return (((fw.sin(pi * x) * fw.sin(pi * x / 3) + eps) /
            ((pi**2 * x**2 / 3) + eps)) * to_dtype(abs(x) < 3))


@support_sz(2)