Free units of measurement for ada 2.4 software for linux

Simple components for Ada library is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
As a special exception, if other files instantiate generics from this unit, or you link this unit with other files to produce an executable, this unit does not by itself cause the resulting executable to be covered by the GNU General Public License.
This exception does not however invalidate any other reasons why the executable file might be covered by the GNU Public License.
Enhancements:
- Functions Is_In were added for doubly-linked webs and lists. GPS project files were added for GNAT users.

Fuzzy sets for Ada is a library providing implementations of confidence factors with the operations not, and, or, xor, +, and *, classical fuzzy sets with the set-theoretic operations and the operations of the possibility theory, intuitionistic fuzzy sets with the operations on them, fuzzy logic based on the intuitionistic fuzzy sets and the possibility theory; fuzzy numbers, both integer and floating-point with conventional arithmetical operations, and linguistic variables and sets of linguistic variables with operations on them. Fuzzy sets for Ada has support for string-oriented I/O.
Main features:
- Confidence factors with the operations not, and, or, xor, +, *;
- Classical fuzzy sets with the set-theoretic operations and the operations of the possibility theory;
- Intuitionistic fuzzy sets with the operations on them;
- Fuzzy logic based on the intuitionistic fuzzy sets and the possibility theory;
- Fuzzy numbers both integer and floating-point ones with conventional arithmetical operations;
- Dimensioned fuzzy numbers;
- Linguistic variables and sets of linguistic variables with operations on them;
- String-oriented I/O is supported.
Enhancements:
- The code was tested with GNAT Ada 2005 (GCC 4.0.2 20051125).
- A bug was fixed in Fuzzy.Linguistics.Sets.Defuzzify, which led to incorrect defuzzification with a descending membership function.

Units-filter is a basic standalone filter written in C, flex, and bison.
It inputs strings like "1.5e3 nN.m.s^-1" (which could be the time growth ratio of a torque) and outputs the value in standard SI units, followed by the physical dimension of this value.
units-filter can be embedded in educational test systems, in order to analyze a students answer to a problem of physics or chemistry.
Enhancements:
- The support for quantities with a particular number of significative digits was added.
- For example, the entry "1.02m#5" or "1.0200m" are equivalent and signify a distance measurement precise at the sub-millimeter scale.
- Both would yield the output "1.0200e+00 m".

Interval arithmetic for Ada is a math library that provides an implementation of intervals for Ada. It includes arithmetic and relational operations.
Examples:
Tri-state logic
The package Intervals serves as a root package and also provides tri-state logic necessary to define relational operations on intervals. The type Logical is defined as:
type Logical is (False, True, Uncertain);
The following operations are defined for Logical:
function "not" (Left : Logical) return Logical;
function "and" (Left, Right : Logical) return Logical;
function "and" (Left : Logical; Right : Boolean)
return Logical;
function "and" (Left : Boolean; Right : Logical)
return Logical;
function "or" (Left, Right : Logical) return Logical;
function "or" (Left : Logical; Right : Boolean)
return Logical;
function "or" (Left : Boolean; Right : Logical)
return Logical;
function "xor" (Left, Right : Logical) return Logical;
function "xor" (Left : Logical; Right : Boolean)
return Logical;
function "xor" (Left : Boolean; Right : Logical)
return Logical;
Enhancements:
- For GNAT users GPS project files were included;
- Based on Measurement units for Ada v 2.4.

Tank Command project is a fast-paced 2D arcade game.

Tank Command is a fast paced 2D arcade game in which the player must destroy all of the enemy units.

A balance between careful strategy and shoot-em-up action, this game is a fun and exciting way to pass some spare time.

Simple DirectMedia Layer project is a library that gives portable low-level access for multimedia applications.
Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer. It is used by MPEG playback software, emulators, and many popular games, including the award winning Linux port of "Civilization: Call To Power."
SDL supports Linux, Windows, Windows CE, BeOS, MacOS, Mac OS X, FreeBSD, NetBSD, OpenBSD, BSD/OS, Solaris, IRIX, and QNX. The code contains support for AmigaOS, Dreamcast, Atari, AIX, OSF/Tru64, RISC OS, SymbianOS, and OS/2, but these are not officially supported.
SDL is written in C, but works with C++ natively, and has bindings to several other languages, including Ada, C#, Eiffel, Erlang, Euphoria, Guile, Haskell, Java, Lisp, Lua, ML, Objective C, Pascal, Perl, PHP, Pike, Pliant, Python, Ruby, and Smalltalk.
SDL is distributed under GNU LGPL version 2. This license allows you to use SDL freely in commercial programs as long as you link with the dynamic library.
Enhancements:
- Dynamic X11 loading is only enabled with gcc 4 supporting -fvisibility=hidden. This fixes crashes related to symbol collisions, and allows building on Solaris and IRIX.
- Fixed building SDL with Xinerama disabled.
- Fixed DRI OpenGL library loading, using RTLD_GLOBAL in dlopen().
- Added pkgconfig configuration support.