GEN_LAGUERRE_RULE, a MATLAB program which generates a specific generalized Gauss-Laguerre quadrature rule, based on user input.
The rule is written to three files for easy use as input to other programs.
The generalized Gauss-Laguerre quadrature rule is used as follows:
Integral ( a <= x < +oo ) |x-a|^alpha * exp(-b*(x-a)) f(x) dxis to be approximated by
Sum ( 1 <= i <= order ) w(i) * f(x(i))
gen_laguerre_rule ( order, alpha, a, b, 'filename' )where
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
GEN_LAGUERRE_RULE is available in a C++ version and a FORTRAN90 version and a MATLAB version.
ALPERT_RULE, a MATLAB library which can set up an Alpert quadrature rule for functions which are regular, log(x) singular, or 1/sqrt(x) singular.
CCN_RULE, a MATLAB program which defines a nested Clenshaw Curtis quadrature rule.
CHEBYSHEV1_RULE, a MATLAB program which can compute and print a Gauss-Chebyshev type 1 quadrature rule.
CHEBYSHEV2_RULE, a MATLAB program which can compute and print a Gauss-Chebyshev type 2 quadrature rule.
CLENSHAW_CURTIS_RULE, a MATLAB program which defines a Clenshaw Curtis quadrature rule.
GEGENBAUER_RULE, a MATLAB program which can compute and print a Gauss-Gegenbauer quadrature rule.
GEN_HERMITE_RULE, a MATLAB program which computes a generalized Gauss-Hermite quadrature rule.
HERMITE_RULE, a MATLAB program which computes a Gauss-Hermite quadrature rule.
INTLIB, a FORTRAN90 library which contains routines for numerical estimation of integrals in 1D.
JACOBI_RULE, a MATLAB program which computes a Gauss-Jacobi quadrature rule.
LAGUERRE_RULE, a MATLAB program which computes a Gauss-Laguerre quadrature rule.
LEGENDRE_RULE, a MATLAB program which computes a Gauss-Legendre quadrature rule.
LEGENDRE_RULE_FAST, a MATLAB program which uses a fast (order N) algorithm to compute a Gauss-Legendre quadrature rule of given order.
LINE_FELIPPA_RULE, a MATLAB library which returns the points and weights of a Felippa quadrature rule over the interior of a line segment in 1D.
PATTERSON_RULE, a MATLAB program which computes a Gauss-Patterson quadrature rule.
POWER_RULE, a MATLAB program which constructs a power rule, that is, a product quadrature rule from identical 1D factor rules.
QUADRATURE_RULES, a dataset directory which contains sets of files that define quadrature rules over various 1D intervals or multidimensional hypercubes.
QUADRATURE_RULES_LAGUERRE, a dataset directory which contains triples of files defining Gauss-Laguerre quadrature rules.
QUADRULE, a MATLAB library which contains 1-dimensional quadrature rules.
TEST_INT_LAGUERRE, a MATLAB library which defines test integrands for Gauss-Laguerre rules.
TRUNCATED_NORMAL_RULE, a MATLAB program which computes a quadrature rule for a normal probability density function (PDF), also called a Gaussian distribution, that has been truncated to [A,+oo), (-oo,B] or [A,B].