如何在Mathematica中使用FORTRAN子程序或函数？

Question

我有兴趣在Mathematica会话中调用fortran代码.我了解到Mathlink提供了一种方法.但我对C语言知之甚少,对C++没什么了解.有人愿意给我一个详细的例子吗？

我正在使用Mathematica 8,MS Visual Studio 2008和Intel Fortran 11.该系统是Windows 7 Home Premium.

非常感谢!

Answer 1

以下是我使用Windows系统使用gfortan和gcc成功的一个明确示例:

我在Mathlink找到了这个博客Adventures.它有一个具体的例子.我安装了MinGW以便使用gfortran和gcc.安装后,必须设置PATH才能使用gfortran和gcc而不必每次都输入路径.在不重新启动系统的情况下添加PATH的提示:添加PATH后,打开cmd,然后运行set PATH=C:然后关闭cmd,再次打开它时echo %PATH%,您将看到新的路径列表.我按照教程示例addtwo跟踪了适用于Windows的链接博客中的步骤:

Mathematica代码编写.bat文件并运行它以生成可执行文件

(* Write a .bat file to compile the MathLink template *.tm, FORTRAN codes *.f and 
C codes *.c files, and run it to create an executable file. *)
CreateExeF[s_String] := 
Module[{dir, libdir, bindir, BatCode, bat}, dir = NotebookDirectory[];
{libdir, bindir} = StringJoin[
  "\"", $InstallationDirectory, 
 "\\SystemFiles\\Links\\MathLink\\DeveloperKit\\Windows\\CompilerAdditions\\mldev32\\",
  #] & /@ {"lib\\", "bin\\"};
BatCode = StringJoin[
 "gfortran -c ", #, ".f -o ", #, "f.o
 gcc -c ", #, ".c -o ", #, ".o
 ",
 bindir, "mprep.exe\" ", #, ".tm -o ", #, "tm.c
 gcc -c ", #, "tm.c -o ", #, "tm.o
 gcc ", #, "tm.o ", #, ".o ", #, "f.o ",
 libdir, "ml32i3m.lib\" ", 
 "-lm -lpthread -mwindows -lstdc++ -o ", #
 ] &;
 (* write the .bat file *)
 bat = Export[FileNameJoin[{dir, # <> ".bat"}], BatCode[dir <> #], 
  "string"] &[s];
 (* run the .bat file *)
 Run[bat]]

FORTRAN代码addtwo.f

   subroutine addtwof(i,j,k)
   integer i, j, k
   k = i + j
   end

C包装器addtwo.c

#include "mathlink.h"

int addtwo(int i, int j) 
{
  int res;
  addtwof_(&i, &j, &res);
  return res;
}

#if WINDOWS_MATHLINK

#if __BORLANDC__
#pragma argsused
#endif

int PASCAL WinMain( HINSTANCE hinstCurrent, HINSTANCE hinstPrevious, LPSTR lpszCmdLine,     int nCmdShow)
{
char  buff[512];
char FAR * buff_start = buff;
char FAR * argv[32];
char FAR * FAR * argv_end = argv + 32;

hinstPrevious = hinstPrevious; /* suppress warning */

if( !MLInitializeIcon( hinstCurrent, nCmdShow)) return 1;
MLScanString( argv, &argv_end, &lpszCmdLine, &buff_start);
return MLMain( (int)(argv_end - argv), argv);
}

#else

int main(int argc, char* argv[])
{
return MLMain(argc, argv);
}

#endif

模板文件addtwo.tm与Todd Gayley教程中的相同.为了完整起见,这里也给出了:

:Begin:
:Function:       addtwo
:Pattern:        AddTwo[i_Integer, j_Integer]
:Arguments:      { i, j }
:ArgumentTypes:  { Integer, Integer }
:ReturnType:     Integer
:End:

:Evaluate:       AddTwo::usage = "AddTwo[i, j] gives the sum of two integer numbers i and j."