GLPK/C-Sharp
C# is a programming language, designed by Microsoft, and described by some as similar to Java [1]. An open source implementation of C# is provided by the Mono project.
C# has been standardized under the following documents:
- ECMA-334 — C# Language Specification
- ISO/IEC 23270:2006 — Information technology – Programming languages – C#.
GLPK for C#/CLI
[edit | edit source]GLPK for C#/CLI provides a C# and common language interface (CLI) binding for GLPK. It is licensed under GPL V3. The coding is generated using SWIG.
GLPK for C#/CLI supports callback and terminal listeners. Errors occurring in the GLPK native library are thrown as C# exceptions. All functions of the GLPK API are available as methods of the GLPK object as shown in the example below:
using System;
using org.gnu.glpk;
class Program
{
static void Main (string[] args)
{
Console.WriteLine ("GLPK " + GLPK.glp_version ());
}
}
Marshalling
[edit | edit source]C# can call C library functions directly using marshalling. The following program invokes glp_version() to output the version of the GLPK library.
/*
* This program demonstrates calling the GLPK library with C#.
*/
using System;
using System.Runtime.InteropServices;
public class Test {
[DllImport ("glpk")]
static extern IntPtr glp_version();
public static void Main(string[] args) {
Console.WriteLine("GLPK " + version());
}
public static string version() {
return Marshal.PtrToStringAnsi(glp_version());
}
}
To compile the program with Mono use
mcs test.cs
To compile the program with Visual C# use
csc test.cs
Visual Studio
[edit | edit source]When GLPK is compiled with Visual Studio C++, both .dll and .lib files are created. The easiest (usual) way to the use GLPK in a Visual Studio C# project in this case is to make the C++ GLPK project a dependency for the C# project and include the .lib file.
GLPK#
[edit | edit source]GLPK# (GLPK Sharp) provides a C# language binding for GLPK and is licensed under CeCILL version 2.
GLPK# is written in C++/CLI and would normally be statically linked to GLPK. As at July 2012, GLPK# supports most of the GLPK 4.45 API, including terminal callbacks and branch-and-cut callbacks. See the dual French/English project website for details.
References
[edit | edit source]- ↑ Dormann, Scott (2007). "The history of C#".
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