{"id":17360788,"url":"https://github.com/certik/minpack","last_synced_at":"2026-02-26T11:32:57.932Z","repository":{"id":2562512,"uuid":"3541786","full_name":"certik/minpack","owner":"certik","description":"Library for solving nonlinear equations and nonlinear least squares problems","archived":false,"fork":false,"pushed_at":"2023-01-28T04:36:51.000Z","size":255,"stargazers_count":33,"open_issues_count":5,"forks_count":10,"subscribers_count":6,"default_branch":"master","last_synced_at":"2025-03-27T16:37:05.427Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"http://www.netlib.org/minpack/","language":"Fortran","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/certik.png","metadata":{"files":{"readme":"README.rst","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2012-02-25T02:25:56.000Z","updated_at":"2024-12-12T11:44:52.000Z","dependencies_parsed_at":"2023-02-15T14:20:33.798Z","dependency_job_id":null,"html_url":"https://github.com/certik/minpack","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/certik/minpack","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/certik%2Fminpack","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/certik%2Fminpack/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/certik%2Fminpack/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/certik%2Fminpack/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/certik","download_url":"https://codeload.github.com/certik/minpack/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/certik%2Fminpack/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29857539,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-26T08:51:08.701Z","status":"ssl_error","status_checked_at":"2026-02-26T08:50:19.607Z","response_time":89,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-10-15T19:28:11.712Z","updated_at":"2026-02-26T11:32:57.915Z","avatar_url":"https://github.com/certik.png","language":"Fortran","funding_links":[],"categories":[],"sub_categories":[],"readme":"The modern minpack development has moved to https://github.com/fortran-lang/minpack. \n\nSee the issue https://github.com/fortran-lang/minpack/issues/8 for details about the move.\n\nThis repository is using Minpack in the original fixed-form, and we use it to test the LFortran compiler with older F77 style code.\n\n\nMinpack\n=======\n\nInformation\n-----------\n\nThis repository contains the original double precision Minpack from netlib.org,\ntogether with CMake makefiles and examples.\n\nAbout Minpack\n-------------\n\nMinpack includes software for solving nonlinear equations and\nnonlinear least squares problems.  Five algorithmic paths each include\na core subroutine and an easy-to-use driver.  The algorithms proceed\neither from an analytic specification of the Jacobian matrix or\ndirectly from the problem functions.  The paths include facilities for\nsystems of equations with a banded Jacobian matrix, for least squares\nproblems with a large amount of data, and for checking the consistency\nof the Jacobian matrix with the functions.\n\nJorge Moré, Burt Garbow, and Ken Hillstrom at Argonne National Laboratory.\n\nBuild with `fortran-lang/fpm \u003chttps://github.com/fortran-lang/fpm\u003e`_\n--------------------------------------------------------------------\n\nFortran Package Manager (fpm) is a great package manager and build system for Fortran.\n\nYou can build using provided ``fpm.toml``:\n\n.. code-block:: bash\n\n    fpm build \n    fpm run --example \u003cexample_name, see ``fpm.toml``\u003e\n\n\nTo use ``minpack`` within your fpm project, add the following to your ``fpm.toml`` file:\n\n.. code-block:: toml \n\n    [dependencies]\n    minpack = { git=\"https://github.com/certik/minpack.git\" }\n\nDocumentation\n-------------\n\nMinpack contains 4 subroutines for solution of systems of nonlinear equations:\n\n* ``hybrd``, ``hybrd1``: Jacobian matrix is calculated by a forward difference\n  approximation\n* ``hybrj``, ``hybrj1``: Jacobian matrix is provided by the user\n\nand 6 subroutines for nonlinear least squares problems:\n\n* ``lmdif``, ``lmdif1``: Jacobian matrix is calculated by a forward difference\n  approximation\n* ``lmder``, ``lmder1``: Jacobian matrix is provided by the user\n* ``lmstr``, ``lmstr1``: Jacobian matrix is provided by the user, one row per\n  call (uses less memory)\n\nThe routines without ``1`` in the name expose all parameters to the user (`core\nsubroutines`), routines with ``1`` only expose the essential parameters and set\ndefault values for the rest (`easy-to-use driver`). Finally:\n\n* ``chkder``: checks the consistency of the Jacobian matrix with the functions\n\nMore general documentation is given in\nthe 1980 Argonne technical report written by the authors of Minpack,\n`Chapters 1-3 \u003chttp://www.mcs.anl.gov/~more/ANL8074a.pdf\u003e`_.\nThe `Chapter 4 \u003chttp://www.mcs.anl.gov/~more/ANL8074b.pdf\u003e`_ (also available in\nthe file ``ex/file06``) contains detailed documentation for all these routines\ntogether with an example of usage.  Ready to use examples of usage are in the\n``examples`` directory.\n\nOther files in the ``ex`` directory are original examples of usage of various\nroutines (single and double precision), but are not compiled by default.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcertik%2Fminpack","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcertik%2Fminpack","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcertik%2Fminpack/lists"}