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<body class="article">
<div id="header">
<h1>LAPACK 3.12.1</h1>
<div id="toc">
  <div id="toctitle">Table of Contents</div>
  <noscript><p><b>JavaScript must be enabled in your browser to display the table of contents.</b></p></noscript>
</div>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>Release date: 08/01/25.</p></div>
<div class="paragraph"><p>This material is based upon work supported by the National Science Foundation
and the Department of Energy.</p></div>
<div class="paragraph"><p>LAPACK is a software package provided by Univ. of Tennessee, Univ. of
California, Berkeley, Univ. of Colorado Denver and NAG Ltd..</p></div>
</div>
</div>
<h1 id="_support_and_questions">Support and questions:</h1>
<div class="paragraph"><p><a href="http://icl.cs.utk.edu/lapack-forum/">http://icl.cs.utk.edu/lapack-forum/</a></p></div>
<div class="paragraph"><p><a href="https://github.com/Reference-LAPACK/lapack/">https://github.com/Reference-LAPACK/lapack/</a></p></div>
<h1 id="_lapack_3_12_1_what_8217_s_new">LAPACK 3.12.1: What&#8217;s new</h1>
<div class="ulist"><ul>
<li>
<p>
Download: <a href="https://github.com/Reference-LAPACK/lapack/archive/refs/tags/v3.12.1.tar.gz">lapack-3.12.1.tar.gz</a>
</p>
</li>
</ul></div>
<h1 id="_bug_fixes_and_other_changes">Bug fixes and other changes</h1>
<div class="paragraph"><p>What&#8217;s Changed</p></div>
<div class="ulist"><ul>
<li>
<p>
Enables Fortran before including CheckFortranFunctionExists in CMakeL… by <a href="https://github.com/weslleyspereira">@weslleyspereira</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/948">948</a>
</p>
</li>
<li>
<p>
Fixes for the NAG Fortran compiler by <a href="https://github.com/ACSimon33">@ACSimon33</a> inhttps://github.com/Reference-LAPACK/lapack/pull/951[951]
</p>
</li>
<li>
<p>
Fixed HAS_ATTRIBUTE_WEAK_SUPPORT flag for CBLAS objects by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/950">950</a>
</p>
</li>
<li>
<p>
Fixed memory leak in testing framework by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/953">953</a>
</p>
</li>
<li>
<p>
Fixed search phrase for determining the amount of successful tests by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/954">954</a>
</p>
</li>
<li>
<p>
handle and document corner cases of lwork in lapack by <a href="https://github.com/dklyuchinskiy">@dklyuchinskiy</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/942">942</a>
</p>
</li>
<li>
<p>
fix some DMD issues by <a href="https://github.com/dklyuchinskiy">@dklyuchinskiy</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/959">959</a>
</p>
</li>
<li>
<p>
Remove executable permissions from source files by <a href="https://github.com/turboencabulator">@turboencabulator</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/970">970</a>
</p>
</li>
<li>
<p>
CMake: restore compatibility with v3.10 and older by <a href="https://github.com/christoph-conrads">@christoph-conrads</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/976">976</a>
</p>
</li>
<li>
<p>
Re-sync Doxyfile with CMake by <a href="https://github.com/turboencabulator">@turboencabulator</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/978">978</a>
</p>
</li>
<li>
<p>
Fix Doxygen warnings by <a href="https://github.com/turboencabulator">@turboencabulator</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/979">979</a>
</p>
</li>
<li>
<p>
{C,Z}LARFGP: re-scale input vector more often by <a href="https://github.com/christoph-conrads">@christoph-conrads</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/981">981</a>
</p>
</li>
<li>
<p>
Typo by @FrK5E in <a href="https://github.com/Reference-LAPACK/lapack/pull/984">984</a>
</p>
</li>
<li>
<p>
Add Index-64 API as extended API with _64 suffix for LAPACKE by <a href="https://github.com/mkrainiuk">@mkrainiuk</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/888">888</a>
</p>
</li>
<li>
<p>
Two small fixes of bdsqr by <a href="https://github.com/angsch">@angsch</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/989">989</a>
</p>
</li>
<li>
<p>
xGEDMD(Q): silence warning with 64-bit integers by <a href="https://github.com/christoph-conrads">@christoph-conrads</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/993">993</a>
</p>
</li>
<li>
<p>
xSY/HEEVR: clarify use of multiple algorithms by <a href="https://github.com/christoph-conrads">@christoph-conrads</a> inhttps://github.com/Reference-LAPACK/lapack/pull/998[998]
</p>
</li>
<li>
<p>
fix comments by <a href="https://github.com/jip">@jip</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1004">1004</a>
</p>
</li>
<li>
<p>
fix comments by <a href="https://github.com/jip">@jip</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1007">1007</a>
</p>
</li>
<li>
<p>
#1008 Allow installing binaries to subdirectory while keeping CMake package scripts in the same place by <a href="https://github.com/lepus2589">@lepus2589</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1009">1009</a>
</p>
</li>
<li>
<p>
fix LARFB documentation, #1011 by <a href="https://github.com/EduardFedorenkov">@EduardFedorenkov</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1016">1016</a>
</p>
</li>
<li>
<p>
fix out-of-bounds access in orhr_col by <a href="https://github.com/mgates3">@mgates3</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1018">1018</a>
</p>
</li>
<li>
<p>
Allow User Configuration of RPATH Settings by @ahnaf-tahmid-chowdhury in <a href="https://github.com/Reference-LAPACK/lapack/pull/1002">1002</a>
</p>
</li>
<li>
<p>
changing the order of loop to improve performance by <a href="https://github.com/Goddan-wq">@Goddan-wq</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1023">1023</a>
</p>
</li>
<li>
<p>
Use more modern CMake by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1022">1022</a>
</p>
</li>
<li>
<p>
Fix infinite loop when an error occurs in tests ddrvst and sdrvst by <a href="https://github.com/cenewcombe">@cenewcombe</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1024">1024</a>
</p>
</li>
<li>
<p>
Configurable type of hidden Fortran strlen arguments by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1025">1025</a>
</p>
</li>
<li>
<p>
develop DLARF1F and implement in ORM2R, #1011 by <a href="https://github.com/EduardFedorenkov">@EduardFedorenkov</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1019">1019</a>
</p>
</li>
<li>
<p>
Fix the wrong implementation of the new tests for xblat1.f by <a href="https://github.com/cdluminate">@cdluminate</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/964">964</a>
</p>
</li>
<li>
<p>
Implementation of dorm2r and dlarf1f by <a href="https://github.com/jprhyne">@jprhyne</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1020">1020</a>
</p>
</li>
<li>
<p>
Fix lto type mismatch by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1027">1027</a>
</p>
</li>
<li>
<p>
Fix NAG Fortran compiler flag by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1028">1028</a>
</p>
</li>
<li>
<p>
align documentation of BDSQR workspace with code by <a href="https://github.com/dklyuchinskiy">@dklyuchinskiy</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1029">1029</a>
</p>
</li>
<li>
<p>
Fixed usage of uninitialized variables in TESTING by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/961">961</a>
</p>
</li>
<li>
<p>
fix few typos and sytrd boundary workspace by <a href="https://github.com/dklyuchinskiy">@dklyuchinskiy</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1030">1030</a>
</p>
</li>
<li>
<p>
Implement xGEMMTR and cblas_xGEMMTR by <a href="https://github.com/grisuthedragon">@grisuthedragon</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/887">887</a>
</p>
</li>
<li>
<p>
Prevent compilers from using FMA instructions by <a href="https://github.com/ACSimon33">@ACSimon33</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1033">1033</a>
</p>
</li>
<li>
<p>
Clarify documentation of singularity/rank-deficiency checks by <a href="https://github.com/TiborGY">@TiborGY</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/924">924</a>
</p>
</li>
<li>
<p>
PR contains bug fixes found in ?tfsm (triangular solve for a RFP matrix) by <a href="https://github.com/sergey-v-kuznetsov">@sergey-v-kuznetsov</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1042">1042</a>
</p>
</li>
<li>
<p>
Remove CMake &lt; 3 CMP0042 workarounds by @haampie in <a href="https://github.com/Reference-LAPACK/lapack/pull/1040">1040</a>
</p>
</li>
<li>
<p>
Declare project dependency on C to avoid the CMAKE default of C,C++ by <a href="https://github.com/martin-frbg">@martin-frbg</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1044">1044</a>
</p>
</li>
<li>
<p>
DOC:trsly3: Add dtrsyl3/strsyl3 grouping statements by @ilayn in <a href="https://github.com/Reference-LAPACK/lapack/pull/1051">1051</a>
</p>
</li>
<li>
<p>
Add a few forgotten API_SUFFIX wrappers in the recently changed LAPACKE ?TFSM by <a href="https://github.com/jprhyne">@martin-frbg</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1046">1046</a>
</p>
</li>
<li>
<p>
Revert "Add a few forgotten API_SUFFIX wrappers in the recently changed LAPACKE ?TFSM" by <a href="https://github.com/langou">@langou</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1058">1058</a>
</p>
</li>
<li>
<p>
Revert "Revert "Add a few forgotten API_SUFFIX wrappers in the recently changed LAPACKE ?TFSM"" by <a href="https://github.com/weslleyspereira">@weslleyspereira</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1059">1059</a>
</p>
</li>
<li>
<p>
CI: Update the MacOS jobs to use gcc-14 in github workflows by <a href="https://github.com/martin-frbg">@martin-frbg</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1045">1045</a>
</p>
</li>
<li>
<p>
fix leading dimension for matrix B in test routine get52 by <a href="https://github.com/dklyuchinskiy">@dklyuchinskiy</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1064">1064</a>
</p>
</li>
<li>
<p>
Remove comparison as these conditions are never true by <a href="https://github.com/schnorr">@schnorr</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1062">1062</a>
</p>
</li>
<li>
<p>
Use GEMMTR for SY/HE linear updates by <a href="https://github.com/angsch">@angsch</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1069">1069</a>
</p>
</li>
<li>
<p>
[Github workflow] Bump scorecard version by <a href="https://github.com/angsch">@angsch</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1071">1071</a>
</p>
</li>
<li>
<p>
updating gitignore to ignore the mod files when we compile by <a href="https://github.com/jprhyne">@jprhyne</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1082">1082</a>
</p>
</li>
<li>
<p>
Fixing misspelling of <em>triangular</em> in {s,d,c,z}gemmtr.f by <a href="https://github.com/jprhyne">@jprhyne</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1081">1081</a>
</p>
</li>
<li>
<p>
Fix line lengths for the extended API by <a href="https://github.com/hjjvandam">@hjjvandam</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1079">1079</a>
</p>
</li>
<li>
<p>
Adding a recursive xLARFT by <a href="https://github.com/jprhyne">@jprhyne</a> in <a href="https://github.com/Reference-LAPACK/lapack/pull/1080">1080</a>
</p>
</li>
</ul></div>
<h1 id="_developer_list">Developer list</h1>
<div class="ulist"><div class="title">LAPACK developers involved in this release</div><ul>
<li>
<p>
Weslley da Silva Pereira (University of Colorado Denver, USA)
</p>
</li>
<li>
<p>
Igor Kozachenko (University of California, Berkeley, USA)
</p>
</li>
<li>
<p>
Julie Langou (University of Tennessee, USA)
</p>
</li>
</ul></div>
<div class="ulist"><div class="title">Principal Investigators</div><ul>
<li>
<p>
Jim Demmel (University of California,  Berkeley, USA)
</p>
</li>
<li>
<p>
Jack Dongarra (University of Tennessee and ORNL, USA)
</p>
</li>
<li>
<p>
Julien Langou (University of Colorado Denver, USA)
</p>
</li>
</ul></div>
<h1 id="_new_contributors">New Contributors</h1>
<div class="ulist"><ul>
<li>
<p>
@FrK5E made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/984">984</a>
</p>
</li>
<li>
<p>
@lepus2589 made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1009">1009</a>
</p>
</li>
<li>
<p>
@ahnaf-tahmid-chowdhury made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1002">1002</a>
</p>
</li>
<li>
<p>
@Goddan-wq made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1023">1023</a>
</p>
</li>
<li>
<p>
@cenewcombe made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1024">1024</a>
</p>
</li>
<li>
<p>
@cdluminate made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1964">1964</a>
</p>
</li>
<li>
<p>
@jprhyne made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1020">1020</a>
</p>
</li>
<li>
<p>
@TiborGY made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/924">924</a>
</p>
</li>
<li>
<p>
@schnorr made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1062">1062</a>
</p>
</li>
<li>
<p>
@hjjvandam made their first contribution in <a href="https://github.com/Reference-LAPACK/lapack/pull/1079">1079</a>
</p>
</li>
</ul></div>
<div class="paragraph"><p><strong>Full Changelog</strong>: <a href="https://github.com/Reference-LAPACK/lapack/compare/v3.12.0&#8230;v3.12.1">https://github.com/Reference-LAPACK/lapack/compare/v3.12.0&#8230;v3.12.1</a></p></div>
<div class="paragraph"><p>Thanks to all our contributors!</p></div>
<div class="ulist"><ul>
<li>
<p>
Special Thanks to the Mathworks team: Penny Anderson, Mary Ann Freeman, Bobby Cheng, Pat Quillen, Christine Tobler, Heiko Weichelt.
</p>
</li>
<li>
<p>
Special Thanks to the AIMdyn Inc. team Igor Mezic and Maria Fonoberova.
</p>
</li>
</ul></div>
<div class="paragraph"><p>The LAPACK team</p></div>
<div class="paragraph"><p>Thanks you all!</p></div>
<h1 id="_bug_fix">Bug Fix</h1>
<div class="ulist"><ul>
<li>
<p>
<a href="https://github.com/Reference-LAPACK/lapack/milestone/6?closed=1">Closed bugs</a>
</p>
</li>
<li>
<p>
<a href="https://github.com/Reference-LAPACK/lapack/issues?utf8=✓&amp;q=is%3Aissue%20is%3Aopen%20label%3A%22Type%3A%20Bug%22%20">Open bugs</a>
</p>
</li>
<li>
<p>
<a href="https://github.com/Reference-LAPACK/lapack/issues">All open issues</a>
</p>
</li>
</ul></div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated
 2025-01-12 14:23:17 PST
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