1 files changed, 101 insertions, 0 deletions
diff --git a/media/sphinxbase/src/libsphinxbase/util/bitvec.c b/media/sphinxbase/src/libsphinxbase/util/bitvec.c
new file mode 100644
index 000000000..2d139010e
--- /dev/null
+++ b/media/sphinxbase/src/libsphinxbase/util/bitvec.c
@@ -0,0 +1,101 @@
+/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/* ====================================================================
+ * Copyright (c) 1999-2004 Carnegie Mellon University.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * This work was supported in part by funding from the Defense Advanced 
+ * Research Projects Agency and the National Science Foundation of the 
+ * United States of America, and the CMU Sphinx Speech Consortium.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND 
+ * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
+ * NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ====================================================================
+ *
+ */
+/*
+ * bitvec.c -- Bit vector type.
+ *
+ * **********************************************
+ * CMU ARPA Speech Project
+ *
+ * Copyright (c) 1999 Carnegie Mellon University.
+ * ALL RIGHTS RESERVED.
+ * **********************************************
+ * 
+ * HISTORY
+ * $Log: bitvec.c,v $
+ * Revision 1.4  2005/06/22 02:58:22  arthchan2003
+ * Added  keyword
+ *
+ * Revision 1.3  2005/03/30 01:22:48  archan
+ * Fixed mistakes in last updates. Add
+ *
+ * 
+ * 05-Mar-1999	M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon
+ * 		Started.
+ */
+
+
+#include "sphinxbase/bitvec.h"
+
+bitvec_t *
+bitvec_realloc(bitvec_t *vec,
+	       size_t old_len,
+               size_t new_len)
+{
+    bitvec_t *new_vec;
+    size_t old_size = bitvec_size(old_len);
+    size_t new_size = bitvec_size(new_len);
+    
+    new_vec = ckd_realloc(vec, new_size * sizeof(bitvec_t));
+    if (new_size > old_size)
+	memset(new_vec + old_size, 0, (new_size - old_size) * sizeof(bitvec_t));
+
+    return new_vec;
+}
+
+size_t
+bitvec_count_set(bitvec_t *vec, size_t len)
+{
+    size_t words, bits, w, b, n;
+    bitvec_t *v;
+
+    words = len / BITVEC_BITS;
+    bits = len % BITVEC_BITS;
+    v = vec;
+    n = 0;
+    for (w = 0; w < words; ++w, ++v) {
+        if (*v == 0)
+            continue;
+        for (b = 0; b < BITVEC_BITS; ++b)
+            if (*v & (1<<b))
+                ++n;
+    }
+    for (b = 0; b < bits; ++b)
+        if (*v & (1<<b))
+            ++n;
+
+    return n;
+}