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ee2a8f7139
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Antonio Sanchez ee2a8f7139 Modify Unary/Binary/TernaryOp evaluators to work for non-class types. 
This used to work for non-class types (e.g. raw function pointers) in
Eigen 3.3.  This was changed in commit 11f55b29 to optimize the
evaluator:

> `sizeof((A-B).cwiseAbs2())` with A,B Vector4f is now 16 bytes, instead of 48 before this optimization.

though I cannot reproduce the 16 byte result.  Both before the change
and after, with multiple compilers/versions, I always get a result of 40 bytes.

https://godbolt.org/z/MsjTc1PGe

This change modifies the code slightly to allow non-class types.  The
final generated code is identical, and the expression remains 40 bytes
for the `abs2` sample case.

Fixes #2251


(cherry picked from commit ebb300d0b4)
2021-05-25 18:19:53 +00:00
.gitlab Add GitLab templates for issues and merge requests 2021-03-31 16:01:12 +00:00
bench Compilation of basicbenchmark fixed 2021-04-21 12:09:42 +02:00
blas Replace language_support module with builtin CheckLanguage 2021-01-27 13:26:40 +00:00
ci Add CI infrastructure for pre-merge smoke tests. 2021-04-01 00:08:37 +00:00
cmake Add CI infrastructure for pre-merge smoke tests. 2021-04-01 00:08:37 +00:00
debug MIsc. source and comment typos 2018-03-11 10:01:44 -04:00
demos Make file formatting comply with POSIX and Unix standards 2020-03-23 18:09:02 +00:00
doc Define EIGEN_CPLUSPLUS and replace most __cplusplus checks. 2021-03-05 18:33:18 +00:00
Eigen Modify Unary/Binary/TernaryOp evaluators to work for non-class types. 2021-05-25 18:19:53 +00:00
failtest Make file formatting comply with POSIX and Unix standards 2020-03-23 18:09:02 +00:00
lapack Replace language_support module with builtin CheckLanguage 2021-01-27 13:26:40 +00:00
scripts Replace calls to "hg" by calls to "git" 2019-12-04 11:24:06 +01:00
test predux_half_dowto4 test extended to all applicable packets 2021-05-21 16:58:16 +00:00
unsupported Fix calls to device functions from host code 2021-05-12 17:01:45 +00:00
.gitignore New CI infrastructure, including AArch64 runners 2020-09-11 18:11:49 +00:00
.gitlab-ci.yml Add CI infrastructure for pre-merge smoke tests. 2021-04-01 00:08:37 +00:00
.hgeol Added a pattern which forces LF line endings for *.sh files. 2013-07-31 18:20:58 +02:00
CMakeLists.txt Remove code checking for CMake < 3.5 2020-12-14 09:57:44 +00:00
COPYING.APACHE Add Apache 2.0 license text in COPYING.APACHE. 2020-06-18 12:45:27 -07:00
COPYING.BSD Make file formatting comply with POSIX and Unix standards 2020-03-23 18:09:02 +00:00
COPYING.GPL there's no reason why we should follow the FSF's stupid recommendation for the naming of these files, right? This could give the wrong impression that Eigen is only GPL-licensed. 2009-11-14 23:26:07 -05:00
COPYING.LGPL Replace COPYING.LGPL by a copy of the LGPL 2.1 (instead of LGPL 3). 2012-09-10 13:27:44 -04:00
COPYING.MINPACK Make file formatting comply with POSIX and Unix standards 2020-03-23 18:09:02 +00:00
COPYING.MPL2 add COPYING.MPL2 2012-07-15 10:20:59 -04:00
COPYING.README Replace COPYING.LGPL by a copy of the LGPL 2.1 (instead of LGPL 3). 2012-09-10 13:27:44 -04:00
CTestConfig.cmake STYLE: Convert CMake-language commands to lower case 2019-10-31 11:36:37 -05:00
CTestCustom.cmake.in Allow to filter out build-error messages 2018-07-24 20:12:49 +02:00
eigen3.pc.in Further fixes for CMAKE_INSTALL_PREFIX correctness 2015-11-07 21:29:24 -05:00
INSTALL finally, the right fix: set CTEST_BUILD_TARGET. 2009-10-04 20:27:44 -04:00
README.md Update old links to bitbucket to point to gitlab.com 2019-12-04 10:57:07 +01:00
signature_of_eigen3_matrix_library improve the scripts for building unit tests: 2009-11-25 21:26:37 -05:00

README.md

Eigen is a C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.

For more information go to http://eigen.tuxfamily.org/.

For pull request, bug reports, and feature requests, go to https://gitlab.com/libeigen/eigen.