# Prerequisites

Its source code on GitHub contains 2 source files:

`matrix.h`

that is a matrix operations library coded in C++`matrix.cpp`

that is a simple test over this library

Let's familiarize ourselves with the

`main`

function in `matrix.cpp`

:int

main(void) {

Matrix<2U, 2U> matrix_a {

2., 1.,

4., 2. };

auto id = identity<2>();

bool has_inverse = is_invertible(id);

std::cout << "identity is inversible: " << (has_inverse ? "yes\n" : "no\n");

Matrix<2U, 2U> matrix_b = matrix_a + (5 ^ id);

Matrix<2, 1> res = solve(matrix_b, { 6., 10. });

std::cout << "RESULT IS:\n" << res;

return 0;

(void) has_inverse;

}

The test implemented in

`main`

performs the following step:- It initializes a 2 x 2 matrix
- It verifies if the matrix is invertible
- It performs some basic operations on this matrix
- It solves a matrix equation

We already configured the project Cxx_matrix for TrustInSoft CI by adding a

`.trustinsoft/config.json`

file to the repository. In our example, the Analyses configuration specifies the source file `matrix.cpp`

to analyze, the analysis entry point function `main`

and the preprocessor option `-I.`

.We also launched the analysis in TrustInSoft CI:

**1.**Load the following URL in your browser to visualize a summary of the analysis results: https://ci.trust-in-soft.com/projects/TrustInSoft-CI/Cxx_matrix/latest

There is only one analysis, as one entry point, and no undefined behavior on the tested path:

**2.**Launch TrustInSoft CI Analyzer by clicking the

`#1`

analysis and then on the `Inspect with TrustInSoft CI Analyzer`

button.Next let's dive into C++ identifiers, constructions and calling conventions in TrustInSoft CI Analyzer.

Last modified 2yr ago