1 /* Copyright (C) 2008 CSIRO */
2 /**
3    @file fixed_c6x.h
4    @brief Fixed-point operations for the TI C6x DSP family
5 */
6 /*
7    Redistribution and use in source and binary forms, with or without
8    modification, are permitted provided that the following conditions
9    are met:
10 
11    - Redistributions of source code must retain the above copyright
12    notice, this list of conditions and the following disclaimer.
13 
14    - Redistributions in binary form must reproduce the above copyright
15    notice, this list of conditions and the following disclaimer in the
16    documentation and/or other materials provided with the distribution.
17 
18    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
22    OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
25    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
26    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30 
31 #ifndef FIXED_C6X_H
32 #define FIXED_C6X_H
33 
34 #undef MULT16_16SU
35 #define MULT16_16SU(a,b) _mpysu(a,b)
36 
37 #undef MULT_16_16
38 #define MULT_16_16(a,b) _mpy(a,b)
39 
40 #define celt_ilog2(x) (30 - _norm(x))
41 #define OVERRIDE_CELT_ILOG2
42 
43 #undef MULT16_32_Q15
44 #define MULT16_32_Q15(a,b) (_mpylill(a, b) >> 15)
45 
46 #if 0
47 #include "dsplib.h"
48 
49 #undef MAX16
50 #define MAX16(a,b) _max(a,b)
51 
52 #undef MIN16
53 #define MIN16(a,b) _min(a,b)
54 
55 #undef MAX32
56 #define MAX32(a,b) _lmax(a,b)
57 
58 #undef MIN32
59 #define MIN32(a,b) _lmin(a,b)
60 
61 #undef VSHR32
62 #define VSHR32(a, shift) _lshl(a,-(shift))
63 
64 #undef MULT16_16_Q15
65 #define MULT16_16_Q15(a,b) (_smpy(a,b))
66 
67 #define celt_maxabs16(x, len) MAX32(EXTEND32(maxval((DATA *)x, len)),-EXTEND32(minval((DATA *)x, len)))
68 #define OVERRIDE_CELT_MAXABS16
69 
70 #endif /* FIXED_C6X_H */
71