Module DGDHES in IMSLM

General Information

Approximate the Hessian using forward differences and a user-supplied gradient.

Usage

CALL DGDHES (GRAD, N, XC, XSCALE, GC, EPSFCN, H, LDH)

Classification

G4f	Other service routines for optimization

Type

subroutine in IMSLM package

Language

Fortran

Availability

Proprietary, Portable

Precision

Double Precision

Alternates

GDHES

Single Precision

Installation on ITL; Unix Workstation Network

Location

National Institute of Standards and Technology (NIST), Gaithersburg, MD.

Contact

Gaithersburg Consulting Office: 301-975-2968 (FTS 879-2968)

Usage

Access available only to NIST staff on internal Unix systems. They may access this package provided the /itl tree is cross-mounted.

Documentation

cat /home/fetch/Subjects/Math-Stat-Software/imsl/Documentation/dgdhes

Example

cat /home/fetch/Subjects/Math-Stat-Software/imsl/Examples/dgdhes

To Link

Login to spruce.nist.gov and see ITL How-To for information on how to setup your environment and link.