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Posted to dev@hama.apache.org by "Edward J. Yoon (JIRA)" <ji...@apache.org> on 2008/12/11 10:49:44 UTC
[jira] Updated: (HAMA-134) We don't need to fill C with zeros
[ https://issues.apache.org/jira/browse/HAMA-134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward J. Yoon updated HAMA-134:
--------------------------------
Attachment: HAMA-134.patch
> We don't need to fill C with zeros
> ----------------------------------
>
> Key: HAMA-134
> URL: https://issues.apache.org/jira/browse/HAMA-134
> Project: Hama
> Issue Type: Sub-task
> Reporter: Edward J. Yoon
> Attachments: HAMA-134.patch
>
>
> Also, let's create/use/return the 'new SubMatrix' directly.
> ----
> public SubMatrix mult(SubMatrix b) {
> double[][] C = new double[this.getRows()][b.getColumns()];
> for (int i = 0; i < this.getRows(); i++) {
> Arrays.fill(C[i], 0);
> }
> for (int i = 0; i < this.getRows(); i++) {
> for (int j = 0; j < b.getColumns(); j++) {
> for (int k = 0; k < this.getColumns(); k++) {
> C[i][j] += this.get(i, k) * b.get(k, j);
> }
> }
> }
> return new SubMatrix(C);
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