Why #define does not work in the xx.cpp file using mexFunction?

I met errors when compile the test.cpp file.

When i remove #define, and use prhs[] and plhs[] directily, no errors. Many thanks.

My enviroments:

* >> myCompiler = mex.getCompilerConfigurations
* 
* myCompiler = 
* 
*   CompilerConfiguration with properties:
* 
*              Name: 'Microsoft Visual C++ 2012'
*      Manufacturer: 'Microsoft'
*          Language: 'C++'
*           Version: '11.0'
*          Location: 'C:\Program Files (x86)\Microsoft Visual Studio 11.0'
*           Details: [1x1 mex.CompilerConfigurationDetails]
*        LinkerName: ''
*     LinkerVersion: ''

ERRORS:

# # >> mex test.cpp
# # test.cpp 
# # test.cpp(24) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(24) : error C2059: syntax error : ')' 
# # test.cpp(24) : warning C4390: ';' : empty controlled statement found; is this the intent? 
# # test.cpp(24) : error C2143: syntax error : missing ';' before '&&' 
# # test.cpp(24) : error C2143: syntax error : missing ';' before ')' 
# # test.cpp(30) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(30) : error C2059: syntax error : ')' 
# # test.cpp(30) : warning C4390: ';' : empty controlled statement found; is this the intent? 
# # test.cpp(30) : error C2143: syntax error : missing ';' before '&&' 
# # test.cpp(30) : error C2143: syntax error : missing ';' before ')' 
# # test.cpp(32) : error C2181: illegal else without matching if 
# # test.cpp(33) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(33) : error C2059: syntax error : ')' 
# # test.cpp(34) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(34) : warning C4267: '=' : conversion from 'size_t' to 'int', possible loss of data 
# # test.cpp(34) : error C2059: syntax error : ')' 
# # test.cpp(35) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(35) : warning C4267: '=' : conversion from 'size_t' to 'int', possible loss of data 
# # test.cpp(35) : error C2059: syntax error : ')' 
# # test.cpp(36) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(36) : error C2059: syntax error : ')' 
# # test.cpp(38) : error C2143: syntax error : missing ';' before '=' 
# # test.cpp(39) : error C2143: syntax error : missing ')' before ';' 
# # test.cpp(39) : error C2059: syntax error : ')' 
# #  
# #   C:\PROGRA~1\MATLAB\R2013A\BIN\MEX.PL: Error: Compile of 'test.cpp' failed. 
# #  
# # Error using mex (line 206)
# # Unable to complete successfully.

The following is my code:

#      //test.cpp file
# #include <math.h>
# #include "mex.h"
# 
# 
# #define IS_REAL_2D_FULL_DOUBLE(P) (!mxIsComplex(P) && mxGetNumberOfDimensions(P) ==2 && !mxIsSparse(P) && mxIsDouble(P));
# #define IS_REAL_SCALAR(P) (IS_REAL_2D_FULL_DOUBLE(P) && mxGetNumberOfElements(P) ==1);
# 
# 
# void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
# {
#   #define B_OUT plhs[0];
#   #define A_IN  prhs[0];
#   #define P_IN  prhs[1];
# 
#   double *B, *A, p, colnorm;
#   int M, N, m, n;
# 
#   if(nrhs <1 || nrhs >2)
#     mexErrMsgTxt("Wrong number of input arguments!\n");
#   else if (nlhs>1)
#     mexErrMsgTxt("Too many output arguments! \n");
# 
#   if(!IS_REAL_2D_FULL_DOUBLE(A_IN))
#     mexErrMsgTxt("A must be a real 2D full double array!\n");
# 
#   if(nrhs ==1)
#     p=2.0;
#   else
#     if(!IS_REAL_SCALAR(P_IN))
#       mexErrMsgTxt("P must be a real double scalar. \n");
#     else 
#       p=mxGetScalar(P_IN);
#   M = mxGetM(A_IN);
#   N = mxGetN(A_IN);
#   A = mxGetPr(A_IN);
# 
#   B_OUT = mxCreateDoubleMatrix(M,N,mxREAL);
#   B = mxGetPr(B_OUT);
#   
#   for(n=0; n<N; n++)
#   {
#     for(m=0, colnorm = 0.0; m<M; m++) colnorm +=pow(A[m+M*n],p);
#     colnorm = pow(fabs(colnorm),1.0/p);
# 
#     for(m=0; m<M; m++) B[m +M*n] = A[m+M*n]/colnorm;
#   }
#   return;
# };

Answer 1

[Walter Roberson]

You should not have the semi-colons at the ends of the #define

[Renbo]

Thank you. It works.