Module D01BAF in NAG

• NAG Information

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

D01BAF

 
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     : Fortran subroutine in NAG library (D01 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
 
Usage    : R = D01BAF(D01XXX, A, B, N, FUN, IFAIL)
 
Details  : Documentation Example Example-output
Sites    : (1) AIX (2) ITL
 

Implementation of D01BAF from NAG on AIX

 
AIX:       IBM RS6000, National Institute of Standards and Technology (NIST),
           Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : f77 -o prog prog.f -L/itl/links/generic/lib -lnag
   Documentation: acroread
                  /itl/apps/naglib-19/docs/NAGdoc/fl/pdf/D01/d01baf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/d01bafe.f
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/d01bafe.r
 

Implementation of D01BAF from NAG on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : f77 -o prog prog.f {-lcomplib.sgimath}
                  -L/itl/links/generic/{lib lib32 lib64}{/mips3 /mips4}
                  -lnag
   Documentation: acroread
                  /itl/apps/naglib-19/flib619da/NAGdoc/fl/pdf/D01/d01baf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/d01bafe.f
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/d01bafe.r