legendre_fast_rule_test, a Fortran77 code which calls legendre_fast_rule(), which implements a fast algorithm for the computation of the points and weights of the Gauss-Legendre quadrature rule.
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legendre_fast_rule, a Fortran77 code which uses a fast algorithm to compute a Gauss-Legendre quadrature rule for estimating the integral of a function with density 1 over the interval [-1,+1].