1 /* 2 3 This is the equivalent of MATLAB's fwrite() only on sockets instead of 4 binary files. 5 */ 6 7 #include <petscsys.h> 8 #include <../src/sys/classes/viewer/impls/socket/socket.h> 9 #include <mex.h> 10 11 #define PETSC_MEX_ERROR(a) \ 12 { \ 13 fprintf(stdout, "sread: %s \n", a); \ 14 return; \ 15 } 16 17 PETSC_EXTERN void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[]) 18 { 19 int i, fd, cnt, dt; 20 PetscErrorCode ierr; 21 22 /* check output parameters */ 23 if (nrhs != 3) PETSC_MEX_ERROR("Receive requires three input arguments."); 24 fd = (int)mxGetScalar(prhs[0]); 25 cnt = (int)mxGetNumberOfElements(prhs[1]); 26 dt = (PetscDataType)mxGetScalar(prhs[2]); 27 28 if (dt == PETSC_DOUBLE) { 29 ierr = PetscBinaryWrite(fd, mxGetPr(prhs[1]), cnt, (PetscDataType)dt); 30 if (ierr) PETSC_MEX_ERROR("Unable to send double items."); 31 } else if (dt == PETSC_INT) { 32 int *tmp = (int *)mxMalloc((cnt + 5) * sizeof(int)); 33 double *t = mxGetPr(prhs[1]); 34 for (i = 0; i < cnt; i++) tmp[i] = (int)t[i]; 35 ierr = PetscBinaryWrite(fd, tmp, cnt, (PetscDataType)dt); 36 if (ierr) PETSC_MEX_ERROR("Unable to send int items."); 37 mxFree(tmp); 38 } else if (dt == PETSC_CHAR) { 39 char *tmp = (char *)mxMalloc((cnt + 5) * sizeof(char)); 40 mxGetNChars(prhs[1], tmp, cnt + 1); 41 ierr = PetscBinaryWrite(fd, tmp, cnt, (PetscDataType)dt); 42 if (ierr) PETSC_MEX_ERROR("Unable to send char items."); 43 mxFree(tmp); 44 } else PETSC_MEX_ERROR("Unknown datatype."); 45 return; 46 } 47 48 int main(int argc, char **argv) 49 { 50 return 0; 51 } 52