Function lanczos2

utils/resize_right/interp_methods.py:47–50

(x)

@support_sz(4)
def lanczos2(x):
    fw, to_dtype, eps = set_framework_dependencies(x)
    return (((fw.sin(pi * x) * fw.sin(pi * x / 2) + eps) /
            ((pi**2 * x**2 / 2) + eps)) * to_dtype(abs(x) < 2))


@support_sz(6)