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Increase readability of create_c2c().

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Introduce two intermediate variables, c1, and c2, to hold cell numbers
during the building of the cell<->cell neighbourhood.  This reduces
the statement complexity--both for the human reader and the compiler...
This commit is contained in:
Bård Skaflestad 2011-05-31 23:04:40 +02:00
parent c689a82c96
commit 4313d35883
1 changed files with 7 additions and 4 deletions
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11
src/partition.c
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@ -308,7 +308,7 @@ partition_create_c2c(int nc, int nneigh, const int *neigh,
int **pc2c, int **c2c)
/* ---------------------------------------------------------------------- */
{
int i, ret;
int i, ret, c1, c2;
*pc2c = calloc(nc + 1, sizeof **pc2c);
@ -337,10 +337,13 @@ partition_create_c2c(int nc, int nneigh, const int *neigh,
}
for (i = 0; i < nneigh; i++) {
if ((neigh[2*i + 0] >= 0) && (neigh[2*i + 1] >= 0)) {
c1 = neigh[2*i + 0];
c2 = neigh[2*i + 1];
if ((c1 >= 0) && (c2 >= 0)) {
/* Symmetric Laplace matrix (undirected graph) */
(*c2c)[(*pc2c)[neigh[2*i + 0] + 1] ++] = neigh[2*i + 1];
(*c2c)[(*pc2c)[neigh[2*i + 1] + 1] ++] = neigh[2*i + 0];
(*c2c)[ (*pc2c)[ c1 + 1 ] ++ ] = c2;
(*c2c)[ (*pc2c)[ c2 + 1 ] ++ ] = c1;
}
}