| C02AFF | All zeros of complex polynomial, modified Laguerre method |
| C02AGF | All zeros of real polynomial, modified Laguerre method |
| C06LBF | Inverse Laplace transform, modified Weeks' method |
| E01SGF | Interpolating functions, modified Shepard's method, two variables |
| E04FCF | Unconstrained minimum of a sum of squares, combined Gauss–Newton and modified Newton algorithm using function values only (comprehensive) |
| E04FYF | Unconstrained minimum of a sum of squares, combined Gauss–Newton and modified Newton algorithm using function values only (easy-to-use) |
| E04GDF | Unconstrained minimum of a sum of squares, combined Gauss–Newton and modified Newton algorithm using first derivatives (comprehensive) |
| E04GZF | Unconstrained minimum of a sum of squares, combined Gauss–Newton and modified Newton algorithm using first derivatives (easy-to-use) |
| E04HEF | Unconstrained minimum of a sum of squares, combined Gauss–Newton and modified Newton algorithm, using second derivatives (comprehensive) |
| E04HYF | Unconstrained minimum of a sum of squares, combined Gauss–Newton and modified Newton algorithm, using second derivatives (easy-to-use) |
| E04KDF | Minimum, function of several variables, modified Newton algorithm, simple bounds, using first derivatives (comprehensive) |
| E04KZF | Minimum, function of several variables, modified Newton algorithm, simple bounds, using first derivatives (easy-to-use) |
| E04LBF | Minimum, function of several variables, modified Newton algorithm, simple bounds, using first and second derivatives (comprehensive) |
| E04LYF | Minimum, function of several variables, modified Newton algorithm, simple bounds, using first and second derivatives (easy-to-use) |
| S18ACF | Modified Bessel function K0 (x) |
| S18ADF | Modified Bessel function K1 (x) |
| S18AEF | Modified Bessel function I0 (x) |
| S18AFF | Modified Bessel function I1(x) |
| S18CCF | Modified Bessel function exK0(x) |
| S18CDF | Modified Bessel function exK1(x) |
| S18CEF | Modified Bessel function e-|x|I0(x) |
| S18CFF | Modified Bessel function e-|x|I1(x) |
| S18DCF | Modified Bessel functions Kν+a(z), real a ≥ 0, complex z, \nu =0,1,2,... |
| S18DEF | Modified Bessel functions Iν+a(z), real a ≥ 0, complex z, \nu =0,1,2,... |