Cmex 实例

Visual Studio 2010 + MATLAB 2011a 中进行如下在实验（系统Windows 7 pro 64bit）

注：要求VS版本 < Matlab版本

>> mex -setup

Welcome to mex -setup. This utility will help you set up
a default compiler. For a list of supported compilers, see
http://www.mathworks.com/support/compilers/R2011a/win64.html

Please choose your compiler for building MEX-files:

Would you like mex to locate installed compilers [y]/n? y

Select a compiler:
[1] Microsoft Visual C++ 2010 in D:\Program Files (x86)\Microsoft Visual Studio 10.0

[0] None

Compiler: 1

Please verify your choices:

Compiler: Microsoft Visual C++ 2010
Location: D:\Program Files (x86)\Microsoft Visual Studio 10.0

Are these correct [y]/n? y

***************************************************************************
Warning: MEX-files generated using Microsoft Visual C++ 2010 require
           that Microsoft Visual Studio 2010 run-time libraries be
           available on the computer they are run on.
           If you plan to redistribute your MEX-files to other MATLAB
           users, be sure that they have the run-time libraries.
***************************************************************************

Trying to update options file: C:\Users\zhang\AppData\Roaming\MathWorks\MATLAB\R2011a\mexopts.bat
From template:              D:\PROGRA~1\MATLAB\R2011a\bin\win64\mexopts\msvc100opts.bat

Done . . .

**************************************************************************
Warning: The MATLAB C and Fortran API has changed to support MATLAB
           variables with more than 2^32-1 elements. In the near future
           you will be required to update your code to utilize the new
           API. You can find more information about this at:
           http://www.mathworks.com/support/solutions/en/data/1-5C27B9/?solution=1-5C27B9
           Building with the -largeArrayDims option enables the new API.
**************************************************************************

addtiontest.c

 1 #include <mex.h>
 2 
 3 double addtiontest(double x, double y);
 4 double doublesize(double a, double b);
 5 
 6 void mexFunction(int nlhs, mxArray *plhs[], int nrhs,const mxArray *prhs[])
 7 {
 8 double*a;
 9 double b, c;
10     
11     plhs[0] = mxCreateDoubleMatrix(1, 1, mxREAL);
12     a = mxGetPr(plhs[0]);
13     b =*(mxGetPr(prhs[0]));
14     c =*(mxGetPr(prhs[1]));
15 *a = addtiontest(b, c);
16 }
17 
18 double addtiontest(double x, double y)
19 {
20 double z;
21     z = doublesize(x,y);
22 return z;
23 }

doublesize.c

1 double doublesize(double a, double b)
2 {
3 double c;
4     c =2*(a+b)+100;
5 return c;
6 }

>> mex addtiontest.c doublesize.c

生成文件：addtiontest.mexw64

>> f = addtiontest(1.2,2)

f =

106.4000