Module D01ALF in NAG

• NAG Information

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

D01ALF

 
Is a general purpose integrator which calculates an approximation to the
integral of a function F(x) over a finite interval (A,B), where the integrand may
have local singular behaviour at a finite number of points within the integration
interval.
 
Classes  :  H2a2a1 . Automatic 1-D finite interval quadrature (user need only
                   specify required accuracy) (special integrand including
                   weight functions, oscillating and singular integrands,
                   principal value integrals, splines, etc.), integrand
                   available via user-defined procedure
 
Type     : Fortran subroutine in NAG library (D01 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
 
Usage    : CALL D01ALF (F, A, B, NPTS, POINTS, EPSABS, EPSREL, RESULT, ABSERR,
           W, LW, IW, LIW, IFAIL)
 
Details  : Documentation Example Example-output
Sites    : (1) AIX (2) ITL
 

Implementation of D01ALF 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/d01alf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/d01alfe.f
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/d01alfe.r
 

Implementation of D01ALF 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/d01alf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/d01alfe.f
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/d01alfe.r