Module E04DGF in NAG

• NAG Information

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

E04DGF

 
Minimizes an unconstrained nonlinear function of several variables using a
pre-conditioned, limited memory quasi-Newton conjugate gradient method. The
routine is intended for use on large scale problems.
 
Classes  :  G1b1b . Unconstrained optimization of a smooth multivariate
                  function, user provides first derivatives
 
Type     : Fortran subroutine in NAG library (E04 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
 
Usage    : CALL E04DGF (N, OBJFUN, ITER, OBJF, OBJGRD, X, IWORK,WORK, IUSER,
           USER, IFAIL)
 
See also : E04DJF E04DKF
 
Details  : Documentation Example Example-input Example-output
Sites    : (1) AIX (2) ITL
 

Implementation of E04DGF 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/E04/e04dgf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/e04dgfe.f
   Example-input: cat
                  /itl/apps/naglib-19/flib619da/examples/data/e04dgfe.d
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/e04dgfe.r
 

Implementation of E04DGF 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/E04/e04dgf_fl19.pdf
   Example      : cat
                  /itl/apps/naglib-19/flib619da/examples/source/e04dgfe.f
   Example-input: cat
                  /itl/apps/naglib-19/flib619da/examples/data/e04dgfe.d
   Example-outpu: cat
                  /itl/apps/naglib-19/flib619da/examples/results/e04dgfe.r