matrix

Small C++ matrix library with basic linear-algebra utilities (RREF used by tests and the example app).

Features

• Matrix class that encapsulates Matrix Definiton
• .rows() and .cols() methods to get size
• Access elements via <matrix>(<row#>, <col#>)
• Compute Reduced Row Echelon Form via .rref()
• Baisc Operators / Constructors for interacting with matrices
• Private member functions for row operations; swap_rows(..), scale_row(..), add_row_multiple(..)

Project layout

• lib/ — library sources and public headers (lib/include/matrix/matrix.hpp)
• app/ — example application using the library
• tests/ — Google Test unit tests (tests/test_matrix.cpp)
• CMakeLists.txt — top-level build configuration

Testing

• Uses Google Test for Unit Tests
• Confirms RREF for edge cases
• Checks if the RREF of random matrices is correct
• Unit Tests for isRREF Function

Build (macOS / POSIX)

mkdir -p build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Debug
cmake --build . --config Debug -- -j
ctest --output-on-failure
# or run the test binary directly:
./tests/test_matrix

Requirements

• CMake >= 3.20
• C++20 compiler
• Google Test (findable by CMake). On macOS you can install with Homebrew if needed:

brew install googletest

Usage

Include the public header and link against the matrix target:

#include "matrix/matrix.hpp"

Matrix A({{1,2,3},{4,5,6}});
A.rref();
double v = A(0,0);

Notes

• Tests use Google Test and are discovered via gtest_discover_tests.
• Headers are provided under lib/include/matrix/.