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Diffstat (limited to 'media/pocketsphinx/src/vector.h')
-rw-r--r-- | media/pocketsphinx/src/vector.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/media/pocketsphinx/src/vector.h b/media/pocketsphinx/src/vector.h new file mode 100644 index 000000000..ed81398d9 --- /dev/null +++ b/media/pocketsphinx/src/vector.h @@ -0,0 +1,89 @@ +/* ==================================================================== + * 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. + * + * ==================================================================== + * + */ + +/* + * vector.h -- vector routines. + * + * ********************************************** + * CMU ARPA Speech Project + * + * Copyright (c) 1997 Carnegie Mellon University. + * ALL RIGHTS RESERVED. + * ********************************************** + */ + + +#ifndef __VECTOR_H__ +#define __VECTOR_H__ + +/* System headers. */ +#include <stdio.h> + +/* SphinxBase headers. */ +#include <sphinxbase/prim_type.h> + +typedef float32 *vector_t; + +/* + * The reason for some of the "trivial" routines below is that they could be OPTIMIZED for SPEED + * at some point. + */ + + +/* Floor all elements of v[0..dim-1] to min value of f */ +void vector_floor(vector_t v, int32 dim, float64 f); + + +/* Floor all non-0 elements of v[0..dim-1] to min value of f */ +void vector_nz_floor(vector_t v, int32 dim, float64 f); + + +/* + * Normalize the elements of the given vector so that they sum to 1.0. If the sum is 0.0 + * to begin with, the vector is left untouched. Return value: The normalization factor. + */ +float64 vector_sum_norm(vector_t v, int32 dim); + + +/* Print vector in one line, in %11.4e format, terminated by newline */ +void vector_print(FILE *fp, vector_t v, int32 dim); + + +/* Return TRUE iff given vector is all 0.0 */ +int32 vector_is_zero (float32 *vec, /* In: Vector to be checked */ + int32 len); /* In: Length of above vector */ + +#endif /* VECTOR_H */ |