Module NAG_1D_QUAD_GAUSS_1 in NAGC

• NAGC Information

• Components
  • Documentation from ITL
  • Example from ITL
  • Example-output from ITL
  • Local-details from ITL

NAG_1D_QUAD_GAUSS_1

 
Computes an estimate of the definite integral of a function of known analytical
form, using a Gaussian quadrature formula with a specified number of abscissae.
Formulae are provided for a finite interval (Gauss-Legendre), a semi-infinite
interval (Gauss-Laguerre, Gauss-Rational), and an infinite interval
(Gauss-Hermite).
 
Classes  :  H2a1a2 . Nonautomatic 1-D finite interval quadrature, integrand
                   available via user-defined procedure
            H2a3a2 . Nonautomatic 1-D semi-infinite interval quadrature
                   (including exp(-x) weight function), integrand
                   available via user-defined procedure
            H2a4a2 . Nonautomatic 1-D infinite interval quadrature
                   (including exp(-x**2) weight function), integrand
                   available via user-defined procedure
 
Type     : C subroutine in NAGC library (D01 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
Note     : This procedure may also be invoked using the name d01tac.
 
Usage    : double nag_1d_quad_gauss_1(Nag_GaussFormulae quadrule, double
           (*f)(double x, Nag_User *comm), double a, double b, Integer npts,
           Nag_User *comm, NagError *fail)
 
Details  : Documentation Example Example-output Local-details
Sites    : (1) ITL
 

Implementation of NAG_1D_QUAD_GAUSS_1 from NAGC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
Note     : This procedure may also be invoked using the name d01tac.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : cc -I/itl/links/generic/include -o prog prog.c
                  -L/itl/links/generic/{lib lib32 lib64}{/mips3 /mips4}
                  -lnagc -lm
   Local-details: cat /itl/apps/nagclib-6/docs/implementation
   Documentation: acroread
                  /itl/apps/nagclib-6/docs/NAGdoc/cl/pdf/D01/d01tac_cl05.pdf
   Example      : cat
                  /itl/apps/nagclib-6/clsol06da/examples/source/d01tace.c
   Example-outpu: cat
                  /itl/apps/nagclib-6/clsol06da/examples/results/d01tace.r