spandsp  0.0.6
complex_vector_int.h
1 /*
2  * SpanDSP - a series of DSP components for telephony
3  *
4  * complex_vector_int.h
5  *
6  * Written by Steve Underwood <steveu@coppice.org>
7  *
8  * Copyright (C) 2003 Steve Underwood
9  *
10  * All rights reserved.
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU Lesser General Public License version 2.1,
14  * as published by the Free Software Foundation.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with this program; if not, write to the Free Software
23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24  */
25 
26 #if !defined(_SPANDSP_COMPLEX_VECTOR_INT_H_)
27 #define _SPANDSP_COMPLEX_VECTOR_INT_H_
28 
29 #if defined(__cplusplus)
30 extern "C"
31 {
32 #endif
33 
34 static __inline__ void cvec_copyi(complexi_t z[], const complexi_t x[], int n)
35 {
36  memcpy(z, x, n*sizeof(z[0]));
37 }
38 /*- End of function --------------------------------------------------------*/
39 
40 static __inline__ void cvec_copyi16(complexi16_t z[], const complexi16_t x[], int n)
41 {
42  memcpy(z, x, n*sizeof(z[0]));
43 }
44 /*- End of function --------------------------------------------------------*/
45 
46 static __inline__ void cvec_copyi32(complexi32_t z[], const complexi32_t x[], int n)
47 {
48  memcpy(z, x, n*sizeof(z[0]));
49 }
50 /*- End of function --------------------------------------------------------*/
51 
52 static __inline__ void cvec_zeroi(complexi_t z[], int n)
53 {
54  memset(z, 0, n*sizeof(z[0]));
55 }
56 /*- End of function --------------------------------------------------------*/
57 
58 static __inline__ void cvec_zeroi16(complexi16_t z[], int n)
59 {
60  memset(z, 0, n*sizeof(z[0]));
61 }
62 /*- End of function --------------------------------------------------------*/
63 
64 static __inline__ void cvec_zeroi32(complexi32_t z[], int n)
65 {
66  memset(z, 0, n*sizeof(z[0]));
67 }
68 /*- End of function --------------------------------------------------------*/
69 
70 static __inline__ void cvec_seti(complexi_t z[], complexi_t *x, int n)
71 {
72  int i;
73 
74  for (i = 0; i < n; i++)
75  z[i] = *x;
76 }
77 /*- End of function --------------------------------------------------------*/
78 
79 static __inline__ void cvec_seti16(complexi16_t z[], complexi16_t *x, int n)
80 {
81  int i;
82 
83  for (i = 0; i < n; i++)
84  z[i] = *x;
85 }
86 /*- End of function --------------------------------------------------------*/
87 
88 static __inline__ void cvec_seti32(complexi32_t z[], complexi32_t *x, int n)
89 {
90  int i;
91 
92  for (i = 0; i < n; i++)
93  z[i] = *x;
94 }
95 /*- End of function --------------------------------------------------------*/
96 
97 /*! \brief Find the dot product of two complex int16_t vectors.
98  \param x The first vector.
99  \param y The first vector.
100  \param n The number of elements in the vectors.
101  \return The dot product of the two vectors. */
102 SPAN_DECLARE(complexi32_t) cvec_dot_prodi16(const complexi16_t x[], const complexi16_t y[], int n);
103 
104 /*! \brief Find the dot product of two complex int32_t vectors.
105  \param x The first vector.
106  \param y The first vector.
107  \param n The number of elements in the vectors.
108  \return The dot product of the two vectors. */
109 SPAN_DECLARE(complexi32_t) cvec_dot_prodi32(const complexi32_t x[], const complexi32_t y[], int n);
110 
111 /*! \brief Find the dot product of two complex int16_t vectors, where the first is a circular buffer
112  with an offset for the starting position.
113  \param x The first vector.
114  \param y The first vector.
115  \param n The number of elements in the vectors.
116  \param pos The starting position in the x vector.
117  \return The dot product of the two vectors. */
118 SPAN_DECLARE(complexi32_t) cvec_circular_dot_prodi16(const complexi16_t x[], const complexi16_t y[], int n, int pos);
119 
120 SPAN_DECLARE(void) cvec_lmsi16(const complexi16_t x[], complexi16_t y[], int n, const complexi16_t *error);
121 
122 SPAN_DECLARE(void) cvec_circular_lmsi16(const complexi16_t x[], complexi16_t y[], int n, int pos, const complexi16_t *error);
123 
124 #if defined(__cplusplus)
125 }
126 #endif
127 
128 #endif
129 /*- End of file ------------------------------------------------------------*/
Definition: complex.h:88
complexi32_t cvec_dot_prodi16(const complexi16_t x[], const complexi16_t y[], int n)
Find the dot product of two complex int16_t vectors.
Definition: complex_vector_int.c:53
complexi32_t cvec_dot_prodi32(const complexi32_t x[], const complexi32_t y[], int n)
Find the dot product of two complex int32_t vectors.
Definition: complex_vector_int.c:68
complexi32_t cvec_circular_dot_prodi16(const complexi16_t x[], const complexi16_t y[], int n, int pos)
Find the dot product of two complex int16_t vectors, where the first is a circular buffer with an off...
Definition: complex_vector_int.c:83
Definition: complex.h:77
Definition: complex.h:99