RcppArmadillo 15.6.2-1 with Armadillo 15.6.2

ChangeLog

@@ -1,3 +1,11 @@
+2026-10-16  Dirk Eddelbuettel  <edd@debian.org>
+
+	* inst/include/armadillo_bits/*: Armadillo 15.6.2
+
+	* vignettes/rmd/RcppArmadillo.bib: Updated several references
+	* vignettes/RcppArmadillo-intro.pdf: Regenerated
+	* vignettes/RcppArmadillo-sparseMatrix.pdf: Idem
+
 2026-10-02  Dirk Eddelbuettel  <edd@debian.org>
 
 	* DESCRIPTION (Version, Date): RcppArmadillo 15.6.1-1

DESCRIPTION

@@ -1,8 +1,8 @@
 Package: RcppArmadillo
 Type: Package
 Title: 'Rcpp' Integration for the 'Armadillo' Templated Linear Algebra Library
-Version: 15.6.1-1
-Date: 2026-10-02
+Version: 15.6.2-1
+Date: 2026-10-16
 Authors@R: c(person("Dirk", "Eddelbuettel", role = c("aut", "cre"), email = "edd@debian.org",
                     comment = c(ORCID = "0000-0001-6419-907X")),
              person("Romain", "Francois", role = "aut",

README.md

@@ -152,4 +152,4 @@ GPL (>= 2)
 [cran pkg]: https://cran.r-project.org/package=RcppArmadillo
 [benchmark]: https://eddelbuettel.github.io/ldlasb2/benchmarks.html
 [ldlasb2]: https://github.com/eddelbuettel/ldlasb2
-[rcpparmapaper]: http://dx.doi.org/10.1016/j.csda.2013.02.005
+[rcpparmapaper]: https://dx.doi.org/10.1016/j.csda.2013.02.005

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.72 for RcppArmadillo 15.6.1-1.
+# Generated by GNU Autoconf 2.72 for RcppArmadillo 15.6.2-1.
 #
 # Report bugs to <edd@debian.org>.
 #
@@ -603,8 +603,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='RcppArmadillo'
 PACKAGE_TARNAME='rcpparmadillo'
-PACKAGE_VERSION='15.6.1-1'
-PACKAGE_STRING='RcppArmadillo 15.6.1-1'
+PACKAGE_VERSION='15.6.2-1'
+PACKAGE_STRING='RcppArmadillo 15.6.2-1'
 PACKAGE_BUGREPORT='edd@debian.org'
 PACKAGE_URL=''
 
@@ -1223,7 +1223,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-'configure' configures RcppArmadillo 15.6.1-1 to adapt to many kinds of systems.
+'configure' configures RcppArmadillo 15.6.2-1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1285,7 +1285,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of RcppArmadillo 15.6.1-1:";;
+     short | recursive ) echo "Configuration of RcppArmadillo 15.6.2-1:";;
    esac
   cat <<\_ACEOF
 
@@ -1366,7 +1366,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-RcppArmadillo configure 15.6.1-1
+RcppArmadillo configure 15.6.2-1
 generated by GNU Autoconf 2.72
 
 Copyright (C) 2023 Free Software Foundation, Inc.
@@ -1482,7 +1482,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by RcppArmadillo $as_me 15.6.1-1, which was
+It was created by RcppArmadillo $as_me 15.6.2-1, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   $ $0$ac_configure_args_raw
@@ -3946,7 +3946,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by RcppArmadillo $as_me 15.6.1-1, which was
+This file was extended by RcppArmadillo $as_me 15.6.2-1, which was
 generated by GNU Autoconf 2.72.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -4001,7 +4001,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config='$ac_cs_config_escaped'
 ac_cs_version="\\
-RcppArmadillo config.status 15.6.1-1
+RcppArmadillo config.status 15.6.2-1
 configured by $0, generated by GNU Autoconf 2.72,
   with options \\"\$ac_cs_config\\"
 

configure.ac

@@ -11,7 +11,7 @@
 AC_PREREQ([2.69])
 
 ## Process this file with autoconf to produce a configure script.
-AC_INIT([RcppArmadillo],[15.6.1-1],[edd@debian.org])
+AC_INIT([RcppArmadillo],[15.6.2-1],[edd@debian.org])
 
 ## Set R_HOME, respecting an environment variable if one is set
 : ${R_HOME=$(R RHOME)}

inst/NEWS.Rd

@@ -3,9 +3,18 @@
 \newcommand{\ghpr}{\href{https://github.com/RcppCore/RcppArmadillo/pull/#1}{##1}}
 \newcommand{\ghit}{\href{https://github.com/RcppCore/RcppArmadillo/issues/#1}{##1}}
 
+\section{Changes in RcppArmadillo version 15.6.2-1 (2026-10-16)}{
+  \itemize{
+    \item Upgraded to Armadillo release 15.6.2 (Medium Roast Cortado)
+    \itemize{
+      \item Faster inplace addition of \code{eye()} expressions
+    }
+  }
+}
+
 \section{Changes in RcppArmadillo version 15.6.1-1 [github-only] (2026-10-02)}{
   \itemize{
-    \item Upgraded to Armadillo release 15.6.1 (Medium Roast Agave)
+    \item Upgraded to Armadillo release 15.6.1 (Medium Roast Cortado)
     \itemize{
       \item Fix for failures in \code{pinv()} when using the (non-default)
       "std" method

inst/include/armadillo_bits/Mat_meat.hpp

@@ -5504,6 +5504,18 @@ Mat<eT>::Mat(const eOp<T1, eop_type>& X)
     if(eT_ok && (X.aux == eT(0.5)))  {   eop_sqrt::apply(*this, reinterpret_cast< const eOp<T1, eop_sqrt  >& >(X)); return; }
     }
 
+  if(is_gen_eye<T1>::value && is_same_type<eop_type, eop_scalar_times>::value)
+    {
+    zeros();
+
+    const eT    k = X.aux;
+    const uword N = (std::min)(n_rows, n_cols);
+
+    for(uword ii=0; ii < N; ++ii)  { at(ii,ii) = k; }
+
+    return;
+    }
+
   eop_type::apply(*this, X);
   }
 
@@ -5534,6 +5546,18 @@ Mat<eT>::operator=(const eOp<T1, eop_type>& X)
     if(eT_ok && (X.aux == eT(0.5)))  {   eop_sqrt::apply(*this, reinterpret_cast< const eOp<T1, eop_sqrt  >& >(X)); return *this; }
     }
 
+  if(is_gen_eye<T1>::value && is_same_type<eop_type, eop_scalar_times>::value)
+    {
+    zeros();
+
+    const eT    k = X.aux;
+    const uword N = (std::min)(n_rows, n_cols);
+
+    for(uword ii=0; ii < N; ++ii)  { at(ii,ii) = k; }
+
+    return *this;
+    }
+
   eop_type::apply(*this, X);
 
   return *this;
@@ -5563,6 +5587,18 @@ Mat<eT>::operator+=(const eOp<T1, eop_type>& X)
     if(eT_ok && (X.aux == eT(0.5)))  {   eop_sqrt::apply_inplace_plus(*this, reinterpret_cast< const eOp<T1, eop_sqrt  >& >(X)); return *this; }
     }
 
+  if(is_gen_eye<T1>::value && is_same_type<eop_type, eop_scalar_times>::value)
+    {
+    arma_conform_assert_same_size(n_rows, n_cols, X.get_n_rows(), X.get_n_cols(), "addition");
+
+    const eT    k = X.aux;
+    const uword N = (std::min)(n_rows, n_cols);
+
+    for(uword ii=0; ii < N; ++ii)  { at(ii,ii) += k; }
+
+    return *this;
+    }
+
   eop_type::apply_inplace_plus(*this, X);
 
   return *this;
@@ -5592,6 +5628,18 @@ Mat<eT>::operator-=(const eOp<T1, eop_type>& X)
     if(eT_ok && (X.aux == eT(0.5)))  {   eop_sqrt::apply_inplace_minus(*this, reinterpret_cast< const eOp<T1, eop_sqrt  >& >(X)); return *this; }
     }
 
+  if(is_gen_eye<T1>::value && is_same_type<eop_type, eop_scalar_times>::value)
+    {
+    arma_conform_assert_same_size(n_rows, n_cols, X.get_n_rows(), X.get_n_cols(), "subtraction");
+
+    const eT    k = X.aux;
+    const uword N = (std::min)(n_rows, n_cols);
+
+    for(uword ii=0; ii < N; ++ii)  { at(ii,ii) -= k; }
+
+    return *this;
+    }
+
   eop_type::apply_inplace_minus(*this, X);
 
   return *this;

inst/include/armadillo_bits/arma_version.hpp

@@ -23,7 +23,7 @@
 
 #define ARMA_VERSION_MAJOR 15
 #define ARMA_VERSION_MINOR 6
-#define ARMA_VERSION_PATCH 1
+#define ARMA_VERSION_PATCH 2
 #define ARMA_VERSION_NAME  "Medium Roast Cortado"
 
 

inst/include/armadillo_bits/traits.hpp

@@ -444,6 +444,19 @@ struct is_op_diagmat< const Op<T1,op_diagmat> >
   { static constexpr bool value = true; };
 
 
+template<typename T>
+struct is_gen_eye
+  { static constexpr bool value = false; };
+
+template<typename eT>
+struct is_gen_eye< Gen<Mat<eT>, gen_eye> >
+  { static constexpr bool value = true; };
+
+template<typename eT>
+struct is_gen_eye< const Gen<Mat<eT>, gen_eye> >
+  { static constexpr bool value = true; };
+
+
 //
 //
 

vignettes/rmd/RcppArmadillo.bib

@@ -2,7 +2,7 @@ @String{CRAN
 @String{manuals = CRAN # "doc/manuals/" }
 @String{RCoreTeam = "{R Development Core Team}" }
 @String{RFoundation = "R Foundation for Statistical Computing" }
-@String{R-Forge = "https://R-Forge.R-Project.org/" }
+@String{R-Forge = "https://R-Forge.R-Project.org" }
 @String{DOI = "10.32614/CRAN.package." }
 
 
@@ -11,7 +11,7 @@ @manual{Abrahams+Grosse-Kunstleve:2003:Boost.Python
   organization = "Boost Consulting",
   title =	 "Building Hybrid Systems with Boost.Python",
   year =	 2003,
-  url =		 "http://www.boostpro.com/writing/bpl.pdf"
+  url =		 "https://www.boost.org/doc/libs/latest/libs/python/doc/html/article.html"
 }
 
 @Book{Abrahams+Gurtovoy:2004:TemplateMetaprogramming,
@@ -28,7 +28,7 @@ @Manual{Armstrong:2009:RAbstraction
   author =	 {Whit Armstrong},
   year =	 2009,
   note =	 {Code repository last updated July 22, 2009.},
-  url =		 {http://github.com/armstrtw/rabstraction}
+  url =		 {https://github.com/armstrtw/rabstraction}
 }
 
 @Manual{Armstrong:2009:RObjects,
@@ -37,7 +37,7 @@ @Manual{Armstrong:2009:RObjects
   author =	 {Whit Armstrong},
   year =	 2009,
   note =	 {Code repository last updated November 28, 2009.},
-  url =		 {http://github.com/armstrtw/RObjects}
+  url =		 {https://github.com/armstrtw/RObjects}
 }
 
 @InProceedings{Bates+DebRoy:2001:C++Classes,
@@ -56,7 +56,7 @@ @Misc{Brokken:2011:Cpp
   title = 	 {C++ Annotations},
   howpublished = {Electronic book, University of Groningen},
   year = 	 2012,
-  url =          {http://www.icce.rug.nl/documents/cplusplus/},
+  url =          {https://fbb-git.gitlab.io/cppannotations/cppannotations/html/},
   note =	 {Version 9.3.0, accessed 2012-04-13.},
 }
 
@@ -334,7 +334,7 @@ @Manual{GSL
   year = 	{2010},
   edition =     {3rd},
   note = 	{Version 1.14. {ISBN} 0954612078},
-  url = 	{http://www.gnu.org/software/gsl}
+  url = 	{http://www.gnu.org/software/gsl/}
 }
 
 @Unpublished{Java+Gaile+Manly:2007:RCpp,
@@ -456,7 +456,7 @@ @manual{R:Main
   year =	 2026,
   note =	 {{ISBN} 3-900051-07-0},
   doi = 	 "10.32614/R.manuals",
-  oldurl =	 {http://www.R-project.org/},
+  oldurl =	 {https://www.R-project.org/},
 }
 
 @manual{R:Language,
@@ -551,7 +551,7 @@ @article{Tusell:2010:Kalman
   number =	 2,
   pages =	 "1--27",
   year =	 2011,
-  oldurl =	 "http://www.jstatsoft.org/v39/i02",
+  oldurl =	 "https://www.jstatsoft.org/v39/i02",
   doi =          {10.18637/jss.v039.i02}
 }