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comparison libtwamr/log2.h @ 326:bfe74a9edd5a

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libtwamr: integrate log2.c
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 18 Apr 2024 20:21:04 +0000
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325:67c31802392b 326:bfe74a9edd5a
1 /*
2 ********************************************************************************
3 *
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
5 * R99 Version 3.3.0
6 * REL-4 Version 4.1.0
7 *
8 ********************************************************************************
9 *
10 * File : log2.h
11 * Purpose : Computes log2(L_x)
12 *
13 ********************************************************************************
14 */
15 #ifndef log2_h
16 #define log2_h "$Id $"
17
18 /*
19 ********************************************************************************
20 * INCLUDE FILES
21 ********************************************************************************
22 */
23 #include "typedef.h"
24
25 /*
26 ********************************************************************************
27 * DEFINITION OF DATA TYPES
28 ********************************************************************************
29 */
30
31 /*
32 ********************************************************************************
33 * DECLARATION OF PROTOTYPES
34 ********************************************************************************
35 */
36 void Log2 (
37 Word32 L_x, /* (i) : input value */
38 Word16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */
39 Word16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1)*/
40 );
41
42 void Log2_norm (
43 Word32 L_x, /* (i) : input value (normalized) */
44 Word16 exp, /* (i) : norm_l (L_x) */
45 Word16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */
46 Word16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1) */
47 );
48
49 #endif