Developer Reference for Intel® oneAPI Math Kernel Library for Fortran

ID 766686
Date 3/22/2024
Public

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?jacobi_solve

Computes the Jacobian matrix of the function using RCI and the central difference algorithm.

Syntax

res = sjacobi_solve(handle, f1, f2, RCI_Request)

res = djacobi_solve(handle, f1, f2, RCI_Request)

Include Files

  • Fortran: mkl_rci.fi, mkl_rci.f90

Description

The ?jacobi_solve routine computes the Jacobian matrix of the function using RCI and the central difference algorothm.

See usage examples in the examples\solverf\source folderof your Intel® oneAPI Math Kernel Library (oneMKL) directory. Specifically, see sjacobi_rci_f.f and djacobi_rci_f.f.

Input Parameters

handle

Type INTEGER*8.

RCI_Request

INTEGER. Set to 0 before the first call to ?jacobi_solve.

Output Parameters

f1

REAL for sjacobi_solve

DOUBLE PRECISION for djacobi_solve

Contains the updated function values at x + eps.

f2

REAL for sjacobi_solve

DOUBLE PRECISION for djacobi_solve

Array of size m. Contains the updated function values at x - eps.

RCI_Request

Provides information about the task completion. When equal to 0, the task has completed successfully.

RCI_Request= 1 indicates that you should compute the function values at the current x point and put the results into f1.

RCI_Request= 2 indicates that you should compute the function values at the current x point and put the results into f2.

res

INTEGER. Indicates the task completion status.

  • res = TR_SUCCESS - the routine completed the task normally.

  • res = TR_INVALID_OPTION - there was an error in the input parameters.

TR_SUCCESS and TR_INVALID_OPTION are defined in the mkl_rci.fi include file.

See Also