Deprecate LONG and DOUBLE types and use templates to enable other types instead.

For example ceil(2.0) should return 2 instead of 3. This may influence other functions in the library.

Identity matrices are important for nearly any linear-algebra computation and should be added to the Matrix class as a static method.

Add matrix subtraction using - like

Matrix A {{1, 0, 0}, {0, 1, 0}, {0, 1, 0}};
Matrix B {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
Matrix C = A - B;

Optimize function calls by using constants and references.

Splitting up the large tmath.cpp file into logical units (like the tests) helps to maintain the project.

The logical units are

• abs.cpp
• cosecant.cpp
• cosine.cpp
• cotangent.cpp
• degrad.cpp
• equality.cpp
• explog.cpp
• factorial.cpp
• fcm.cpp
• power.cpp
• roots.cpp
• secant.cpp
• sine.cpp
• tangent.cpp
• vector.cpp

It is currently not possible to use shortcut operators on matrices and vectors, for examples

TMath::Matrix A(3, 3);
TMath::Vector x(3);

A[2] += x;

does not work.

Contributing guidelines make it easier to keep an overview of the project and attract new contributors.

Add matrix multiplication using * like

Matrix A {{1, 0, 0}, {0, 1, 0}, {0, 1, 0}};
Matrix B {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
Matrix C = A * B;

The vector data structure is an important part of the next release. Also including vector operations like adding and subtracting, dot and cross product.

Especially the cyclometric and hyperbolic functions.

The functions floor, ceil and modulo still need tests.

Apply the same technique used in #27 to tests.

Supporting matrices in test library so you can do assert(Matrix{...}, Matrix{...}, "Assert ...");.

in the for-loop of the pow functions and the fac function, 1 × 1 = 1 in the first iteration. therefore that iteration can be eliminated

Vagrant is not necessarily needed to build the project anymore since it's build chain supports only Linux and macOS and therefore all users are restricted to these operating systems.

Add matrix addition using + like

Matrix A {{1, 0, 0}, {0, 1, 0}, {0, 1, 0}};
Matrix B {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
Matrix C = A + B;

Examples are an important part of documentation and provided new users with precious guidance.

Add matrix vector product using * like

Matrix A {{1, 0, 0}, {0, 1, 0}, {0, 1, 0}};
Vector B {1, 1, 1};
Vector C = A * B;

The new matrix class needs to be documented in the README and in the code itself.