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151 lines
4.1 KiB
C
151 lines
4.1 KiB
C
/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
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/* ====================================================================
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* Copyright (c) 1999-2004 Carnegie Mellon University. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* This work was supported in part by funding from the Defense Advanced
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* Research Projects Agency and the National Science Foundation of the
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* United States of America, and the CMU Sphinx Speech Consortium.
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*
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* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
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* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
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* NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ====================================================================
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*
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*/
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/*
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* vector.c
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*
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* **********************************************
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* CMU ARPA Speech Project
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*
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* Copyright (c) 1997 Carnegie Mellon University.
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* ALL RIGHTS RESERVED.
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* **********************************************
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*
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* HISTORY
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*
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* 22-Nov-2004 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University
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* Imported from s3.2, for supporting s3 format continuous
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* acoustic models.
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*
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* 10-Mar-1999 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
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* Added vector_accum(), vector_vqlabel(), and vector_vqgen().
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*
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* 09-Mar-1999 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
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* Added vector_is_zero(), vector_cmp(), and vector_dist_eucl().
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* Changed the name vector_dist_eval to vector_dist_maha.
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*
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* 07-Oct-98 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
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* Added distance computation related functions.
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*
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* 12-Nov-95 M K Ravishankar (rkm@cs.cmu.edu) at Carnegie Mellon University.
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* Copied from Eric Thayer.
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*/
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/* System headers. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include <math.h>
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/* SphinxBase headers. */
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#include <sphinxbase/err.h>
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#include <sphinxbase/ckd_alloc.h>
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#include <sphinxbase/bitvec.h>
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/* Local headers. */
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#include "vector.h"
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#if defined(_WIN32)
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#define srandom srand
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#define random rand
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#endif
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float64
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vector_sum_norm(float32 * vec, int32 len)
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{
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float64 sum, f;
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int32 i;
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sum = 0.0;
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for (i = 0; i < len; i++)
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sum += vec[i];
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if (sum != 0.0) {
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f = 1.0 / sum;
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for (i = 0; i < len; i++)
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vec[i] *= f;
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}
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return sum;
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}
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void
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vector_floor(float32 * vec, int32 len, float64 flr)
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{
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int32 i;
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for (i = 0; i < len; i++)
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if (vec[i] < flr)
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vec[i] = (float32) flr;
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}
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void
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vector_nz_floor(float32 * vec, int32 len, float64 flr)
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{
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int32 i;
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for (i = 0; i < len; i++)
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if ((vec[i] != 0.0) && (vec[i] < flr))
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vec[i] = (float32) flr;
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}
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void
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vector_print(FILE * fp, vector_t v, int32 dim)
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{
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int32 i;
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for (i = 0; i < dim; i++)
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fprintf(fp, " %11.4e", v[i]);
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fprintf(fp, "\n");
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fflush(fp);
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}
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int32
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vector_is_zero(float32 * vec, int32 len)
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{
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int32 i;
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for (i = 0; (i < len) && (vec[i] == 0.0); i++);
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return (i == len); /* TRUE iff all mean values are 0.0 */
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}
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