Mathpaqs

 

 

 

 

Mathpaqs is a collection of mathematical, 100% portable, packages in the Ada programming language.
 

Download:

Download Mathpaqs from the SourceForge project page.


You can also...

 

 

Mathpaqs topics

 

The list of packages below is sorted by topics.

In the Mathpaqs archive, each topic has a subdirectory.

Of course there are many possible interactions, like between Multi-precision numbers and Algebra (see Euclidean_Ring_Tools) - it is like combining mathematics fields...

 

  Algebra

 

Euclidean_Ring_Tools:   Generic package: given a type with the properties of an Euclidean ring (like integers or polynomials, with 0,1,+,* and integral division), it gives the Greatest Common Divisor and the Bezout factors.

 

Frac:   Generic package: given a type with the properties of a ring, it gives the fractions of it, with operators.

 

Frac.Order:     Supplement of generic package 'Frac': provides an order relation from one of the ring.

 

Frac_Euclid:    Generic package: given a type with the properties of an Euclidean ring (with division), it gives the fractions field of it, with operators and reduction.

 

Frac_Euclid.Order:      Supplement of generic package 'Frac_Euclid': provides an order relation from one of the ring.

 

Polynomials:    Generic package, creates polynomials on a field.

 

Examples of instantiation:

·         Float_Polynomials:      = Polynomials( float,    0.0,1.0, "-",... );

·         Rationals.Polynomials:  = Polynomials( rational, frac_0, frac_1, "-",... );

 

Rationals:      Package for manipulation of rational numbers. One-liner package: Frac_Euclid( integer, 0,1, "-","+","-","*","/"); !

·       Rationals_Order:        = Rationals.Order("<");

 

  Linear algebra

 

G_Matrices:     Generic simple matrix package, with matrix-matrix, matrix-vector, vector operations.
NB: For Ada 2005+ and real numbers implemented as floating-point numbers, it is better to use Ada.Numerics.Generic_Real_Arrays instead.

 

Generic_Real_Linear_Equations:   by Jon Squire. Inversion, Cholesky decomposition, LU decomposition, QR decomposition, SV decomposition.

 

ConjGrad:       Fast (Bi)Conjugate Gradient iterative methods for solving Ax=b. Generic -> applies to the matrix storage of your choice (e.g. sparse) !

 

 

  Numerics

 

G_FEK:          Parts of the Finite Element Kernel from M. Bercovier (original in FORTRAN);

                Computes values and derivatives of elementary functions given the element's geometry.

                Available so far:

                  1D: L2 (linear)

                  2D: Q4 (linear), Q9 (quadratic)

                  3D: B27 (quadratic)

                Generic -> can be instantiated for any precision!

 

Beta_Function [NEW]:   The Beta function: B(a,b), B(x,a,b), I_x(a,b).

Gamma_Function:   The Gamma function: Γ(x) and Log(Γ(x)).

Phi_Function [NEW]:   Gauss' Phi function: Φ(x) and inverse.

Error_Function [NEW]:   Error function: Erf(x) and complementary, ErfC(x).

 

  Multi-precision integers

 

Multi_precision_integers:       Multiple-precision integers package.

 

Multi_precision_integers_IO:    Text_IO, for multi-precision integers.

 

  (Pseudo-) Random number generation, probability models, statistics

 

Generic_Random_Functions: Functions facilitating computations with various standard random distributions, discrete and continuous: Beta, Normal, Poisson, Pareto.

 

Discrete_Random_Simulation: Random generation on any empirical discrete distribution.

 

Finite_distributed_random: Random generation on any enumerated type.

 

U_Rand:     Standalone random generator (Pure Ada 95, replaces seamlessly the generator of an Ada implementation (Ada.Numerics.Float_Random) if the latter seems too slow).

 

Copulas:    An object-oriented multivariate uniform random generator with dependency model of any kind. A few basic copulas are provided.

 

Samples:    A package for building samples of random values, then computing statistics from these samples.

 

Estimators: Various statistical estimators.

 

  Sparse matrices

 

Sparse:     Sparse matrix package (Pure Ada 83); uses SparseB

SparseB:    Low-level vector operations for Sparse package

            - Pure Ada 83 [.adb] body, and

            - DEC/Compaq/HP [.dec] body mapped to BLAS

 

  Miscellaneous

 

Formulas [NEW]:   A generic symbolic computation package (expression parser, fast evaluation, formula simplification).

Contours [NEW]:   A generic contour plot package.

 

 

 

Project information:

For any news, change logs, support requests, update informations: visit the project on SourceForge!

Contact:

 

Gautier de Montmollin, e-mail 


Here is a list of other open-source projects I participate to on SourceForge. Click on the links below for details.

Some projects have GitHub mirrors too.


Some Ada compilers: