Matrix library in c++

Usage

Directory structure

| => tree
.
|-- CMakeLists.txt
|-- README.md
|-- build
|-- include
|   `-- matrix.hpp
|-- src
|   |-- CMakeLists.txt
|   `-- matrix.cpp
`-- test
    |-- CMakeLists.txt
    `-- test.cpp

How to build and test

C++ setup

| => gcc --version
gcc (Homebrew GCC 10.2.0) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

| => g++ --version
g++ (Homebrew GCC 10.2.0) 10.2.0
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

| => cmake --version
cmake version 3.18.2

CMake suite maintained and supported by Kitware (kitware.com/cmake).

Pasting the simbolic link of gcc and g++ to the /usr/local/bin directory.

| => which g++
/usr/local/bin/g++
| => which gcc
/usr/local/bin/gcc

Add the folllowing to ~/.bash_profile.

export C_INCLUDE_PATH="/usr/local/include" 
export CPLUS_INCLUDE_PATH="/usr/local/include"
export LIBRARY_PATH="/usr/local/lib/"
alias cmake='cmake -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++'

Update the profile by source ~/.bash_profile.

Check the include path of gcc and see if /usr/local/include is in your include path. Goolge test will be installed here.

| => echo | gcc -E -Wp,-v -
...
#include <...> search starts here:
 /usr/local/include

Install google test locally

Build google test using cmake.

git clone https://github.com/google/googletest.git
cd googletest
mkdir build
cd build
cmake ..
make

Install header and libraries to /usr/local/include and /usr/local/lib resp.

sudo cp -r ./googletest/googlemock/include/gmock /usr/local/include/gmock
sudo cp -r ./googletest/googletest/include/gtest /usr/local/include/gtest
sudo cp ./googletest/build/lib/*.a /usr/local/lib/

Check if you can use google test. Create test.cpp file with the following contents.

#include <gtest/gtest.h>

TEST(TestCaseName, TestName){
    EXPECT_EQ(1, 1);
}

See if you can compile this code.

g++ test.cpp -pthread -lgtest_main -lgtest

Then ./a.out will execute the test.

| => ./a.out
Running tests...
Test project XXX
    Start 1: test01
1/1 Test #1: test01 ...........................   Passed    0.47 sec

100% tests passed, 0 tests failed out of 1

Total Test time (real) =   0.48 sec

Test matrix_lib

Now you can test this library using google test.