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changeset 84:94b6fb73d2ee

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Hack the right answer out of the L2Norm offset computation. We need to subtract off the number vectors that we've just added, as dbH->length has already been updated to reflect them.
author mas01cr
date Tue, 02 Oct 2007 13:16:00 +0000
parents 48aaee766d8a
children 4d2587e683ff
files audioDB.cpp
diffstat 1 files changed, 8 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/audioDB.cpp	Tue Oct 02 13:14:37 2007 +0000
+++ b/audioDB.cpp	Tue Oct 02 13:16:00 2007 +0000
@@ -2453,10 +2453,15 @@
     X+=dim;
   }
   unsigned offset;
-  if(append)
-    offset=dbH->length/(dbH->dim*sizeof(double)); // number of vectors
-  else
+  if(append) {
+    // FIXME: a hack, a very palpable hack: the vectors have already
+    // been inserted, and dbH->length has already been updated.  We
+    // need to subtract off again the number of vectors that we've
+    // inserted this time...
+    offset=(dbH->length/(dbH->dim*sizeof(double)))-n; // number of vectors
+  } else {
     offset=0;
+  }
   memcpy(l2normTable+offset, l2buf, n*sizeof(double));
   if(l2buf)
     delete[] l2buf;