SphinxBase 0.6
matrix.h
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1/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
2/* ====================================================================
3 * Copyright (c) 1997-2000 Carnegie Mellon University. All rights
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18 * This work was supported in part by funding from the Defense Advanced
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37/*********************************************************************
38 *
39 * File: matrix.h
40 *
41 * Description: Matrix and linear algebra functions
42 *
43 * Author:
44 *
45 *********************************************************************/
46
47#ifndef MATRIX_H
48#define MATRIX_H
49
60#ifdef __cplusplus
61extern "C" {
62#endif
63#if 0
64/* Fool Emacs. */
65}
66#endif
67
68/* Win32/WinCE DLL gunk */
69#include <sphinxbase/sphinxbase_export.h>
71
72
80SPHINXBASE_EXPORT void norm_3d(float32 ***arr, uint32 d1, uint32 d2, uint32 d3);
81
90SPHINXBASE_EXPORT void
91accum_3d(float32 ***out, float32 ***in, uint32 d1, uint32 d2, uint32 d3);
92
98SPHINXBASE_EXPORT void band_nz_1d(float32 *v, uint32 d1, float32 band);
99
108SPHINXBASE_EXPORT void floor_nz_3d(float32 ***m, uint32 d1, uint32 d2, uint32 d3, float32 floor);
109
116SPHINXBASE_EXPORT void floor_nz_1d(float32 *v, uint32 d1, float32 floor);
117
130SPHINXBASE_EXPORT
131float64 determinant(float32 **a, int32 len);
132
143SPHINXBASE_EXPORT
144int32 invert(float32 **out_ainv, float32 **a, int32 len);
145
157SPHINXBASE_EXPORT
158int32 solve(float32 **a, float32 *b,
159 float32 *out_x, int32 n);
160
169SPHINXBASE_EXPORT
170void outerproduct(float32 **out_a, float32 *x, float32 *y, int32 len);
171
179SPHINXBASE_EXPORT
180void matrixmultiply(float32 **out_c, /* = */
181 float32 **a, /* * */ float32 **b,
182 int32 n);
183
190SPHINXBASE_EXPORT
191void scalarmultiply(float32 **inout_a, float32 x, int32 n);
192
199SPHINXBASE_EXPORT
200void matrixadd(float32 **inout_a, float32 **b, int32 n);
201
202#if 0
203{ /* Fool indent. */
204#endif
205#ifdef __cplusplus
206}
207#endif
208
209#endif /* MATRIX_H */
210
211
212/*
213 * Log record. Maintained by RCS.
214 *
215 * $Log$
216 * Revision 1.4 2004/07/21 17:46:09 egouvea
217 * Changed the license terms to make it the same as sphinx2 and sphinx3.
218 *
219 * Revision 1.3 2001/04/05 20:02:30 awb
220 * *** empty log message ***
221 *
222 * Revision 1.2 2000/09/29 22:35:12 awb
223 * *** empty log message ***
224 *
225 * Revision 1.1 2000/09/24 21:38:30 awb
226 * *** empty log message ***
227 *
228 * Revision 1.1 97/07/16 11:39:10 eht
229 * Initial revision
230 *
231 *
232 */
SPHINXBASE_EXPORT float64 determinant(float32 **a, int32 len)
Calculate the determinant of a positive definite matrix.
Definition matrix.c:147
SPHINXBASE_EXPORT void floor_nz_1d(float32 *v, uint32 d1, float32 floor)
Floor 1-d array.
Definition matrix.c:114
SPHINXBASE_EXPORT int32 solve(float32 **a, float32 *b, float32 *out_x, int32 n)
Solve (if possible) a positive-definite system of linear equations AX=B for X.
Definition matrix.c:159
SPHINXBASE_EXPORT void matrixadd(float32 **inout_a, float32 **b, int32 n)
Add A += B.
Definition matrix.c:306
SPHINXBASE_EXPORT void floor_nz_3d(float32 ***m, uint32 d1, uint32 d2, uint32 d3, float32 floor)
Floor 3-d array.
Definition matrix.c:96
SPHINXBASE_EXPORT void band_nz_1d(float32 *v, uint32 d1, float32 band)
Ensures that non-zero values x such that -band < x < band, band > 0 are set to -band if x < 0 and ban...
Definition matrix.c:127
SPHINXBASE_EXPORT int32 invert(float32 **out_ainv, float32 **a, int32 len)
Invert (if possible) a positive definite matrix.
Definition matrix.c:153
SPHINXBASE_EXPORT void outerproduct(float32 **out_a, float32 *x, float32 *y, int32 len)
Calculate the outer product of two vectors.
Definition matrix.c:278
SPHINXBASE_EXPORT void accum_3d(float32 ***out, float32 ***in, uint32 d1, uint32 d2, uint32 d3)
Floor 3-d array.
Definition matrix.c:78
SPHINXBASE_EXPORT void matrixmultiply(float32 **out_c, float32 **a, float32 **b, int32 n)
Multiply C=AB where A and B are symmetric matrices.
Definition matrix.c:166
SPHINXBASE_EXPORT void scalarmultiply(float32 **inout_a, float32 x, int32 n)
Multiply a symmetric matrix by a constant in-place.
Definition matrix.c:292
SPHINXBASE_EXPORT void norm_3d(float32 ***arr, uint32 d1, uint32 d2, uint32 d3)
Norm an array.
Definition matrix.c:50
Basic type definitions used in Sphinx.