Actual source code: swrite.c
1: /*
3: This is the equivalent of MATLAB's fwrite() only on sockets instead of
4: binary files.
5: */
7: #include <petscsys.h>
8: #include <../src/sys/classes/viewer/impls/socket/socket.h>
9: #include <mex.h>
11: PetscErrorCode PetscBinaryWrite(int, const void *p, int, PetscDataType);
13: #define PETSC_MEX_ERROR(a) \
14: { \
15: fprintf(stdout, "sread: %s \n", a); \
16: return; \
17: }
18: /*-----------------------------------------------------------------*/
19: /* */
20: /*-----------------------------------------------------------------*/
21: PETSC_EXTERN void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
22: {
23: int i, fd, cnt, dt;
26: /* check output parameters */
27: if (nrhs != 3) PETSC_MEX_ERROR("Receive requires three input arguments.");
28: fd = (int)mxGetScalar(prhs[0]);
29: cnt = mxGetNumberOfElements(prhs[1]);
30: dt = (PetscDataType)mxGetScalar(prhs[2]);
32: if (dt == PETSC_DOUBLE) {
33: PetscBinaryWrite(fd, mxGetPr(prhs[1]), cnt, (PetscDataType)dt);
34: if (ierr) PETSC_MEX_ERROR("Unable to send double items.");
35: } else if (dt == PETSC_INT) {
36: int *tmp = (int *)mxMalloc((cnt + 5) * sizeof(int));
37: double *t = mxGetPr(prhs[1]);
38: for (i = 0; i < cnt; i++) tmp[i] = (int)t[i];
39: PetscBinaryWrite(fd, tmp, cnt, (PetscDataType)dt);
40: if (ierr) PETSC_MEX_ERROR("Unable to send int items.");
41: mxFree(tmp);
42: } else if (dt == PETSC_CHAR) {
43: char *tmp = (char *)mxMalloc((cnt + 5) * sizeof(char));
44: mxGetNChars(prhs[1], tmp, cnt + 1);
45: PetscBinaryWrite(fd, tmp, cnt, (PetscDataType)dt);
46: if (ierr) PETSC_MEX_ERROR("Unable to send char items.");
47: mxFree(tmp);
48: } else PETSC_MEX_ERROR("Unknown datatype.");
49: return;
50: }
52: int main(int argc, char **argv)
53: {
54: return 0;
55: }