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Implement cell loop (tentatively named mim_ip_simple_all()) and a

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MEX gateway for easy testing from M.  Builds with fairly strict
  warnings, but is not tested yet.
This commit is contained in:
Bård Skaflestad 2010-07-04 21:44:04 +00:00
parent ac97aa8c23
commit 4c469918e1
2 changed files with 60 additions and 0 deletions
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56
mimetic.c
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@ -1,4 +1,5 @@
#include <stddef.h>
#include <stdlib.h>
#ifndef MAT_SIZE_T
#define MAT_SIZE_T int
@ -7,6 +8,61 @@
#include "blas_lapack.h"
#include "mimetic.h"
#define MAX(a,b) ((a) > (b) ? (a) : (b))
/* ------------------------------------------------------------------ */
void
mim_ip_simple_all(int ncells, int d, int max_ncf, int *ncf, int *cf,
int *fneighbour, double *fcentroid, double *fnormal,
double *farea, double *ccentroid, double *cvol,
double *perm, double *Binv)
/* ------------------------------------------------------------------ */
{
int i, j, c, f, nf, fpos, fpos2, lwork;
double *C, *N, *A, *work, s;
double cc[3] = { 0.0 }; /* No more than 3 space dimensions */
lwork = 64 * (max_ncf * d); /* 64 from ILAENV() */
C = malloc((max_ncf * d) * sizeof *C);
N = malloc((max_ncf * d) * sizeof *N);
A = malloc(max_ncf * sizeof *A);
work = malloc(lwork * sizeof *work);
if ((C != NULL) && (N != NULL) && (A != NULL) && (work != NULL)) {
fpos = fpos2 = 0;
for (c = 0; c < ncells; c++) {
for (j = 0; j < d; j++) {
cc[j] = ccentroid[j + c*d];
}
nf = ncf[c];
for (i = 0; i < nf; i++) {
f = cf[fpos + i];
s = 2.0*(fneighbour[2 * f] == c) - 1.0;
A[i] = farea[f];
for (j = 0; j < d; j++) {
C[i + j*nf] = fcentroid [j + f*d] - cc[j];
N[i + j*nf] = s * fnormal[j + f*d];
}
}
mim_ip_simple(nf, d, cvol[c], A, &perm[c * d * d],
C, N, &Binv[fpos2], work, lwork);
fpos += nf;
fpos2 += nf * nf;
}
}
free(work); free(A); free(N); free(C);
}
/* ------------------------------------------------------------------ */
void

4
mimetic.h
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@ -12,5 +12,9 @@ void mim_ip_simple(int nf, int d, double v, double *A, double *K,
double *C, double *N, double *Binv,
double *work, int lwork);
void mim_ip_simple_all(int ncells, int d, int max_ncf, int *ncf, int *cf,
int *fneighbour, double *fcentroid, double *fnormal,
double *farea, double *ccentroid, double *cvol,
double *perm, double *Binv);
#endif /* MIMETIC_H_INCLUDED */