FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/log2.h @ 464:fa0652115168
libtwamr: add amr_dhf_subst_efr2()
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 12 May 2024 21:36:26 +0000 |
parents | bfe74a9edd5a |
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libtwamr: integrate log2.c
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1 /* |
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2 ******************************************************************************** |
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3 * |
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001 |
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5 * R99 Version 3.3.0 |
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6 * REL-4 Version 4.1.0 |
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7 * |
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8 ******************************************************************************** |
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9 * |
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10 * File : log2.h |
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11 * Purpose : Computes log2(L_x) |
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12 * |
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13 ******************************************************************************** |
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14 */ |
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15 #ifndef log2_h |
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16 #define log2_h "$Id $" |
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17 |
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18 /* |
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19 ******************************************************************************** |
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20 * INCLUDE FILES |
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21 ******************************************************************************** |
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22 */ |
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23 #include "typedef.h" |
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24 |
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25 /* |
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26 ******************************************************************************** |
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27 * DEFINITION OF DATA TYPES |
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28 ******************************************************************************** |
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29 */ |
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30 |
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31 /* |
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32 ******************************************************************************** |
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33 * DECLARATION OF PROTOTYPES |
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34 ******************************************************************************** |
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35 */ |
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36 void Log2 ( |
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37 Word32 L_x, /* (i) : input value */ |
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38 Word16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */ |
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39 Word16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1)*/ |
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40 ); |
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41 |
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42 void Log2_norm ( |
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43 Word32 L_x, /* (i) : input value (normalized) */ |
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44 Word16 exp, /* (i) : norm_l (L_x) */ |
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45 Word16 *exponent, /* (o) : Integer part of Log2. (range: 0<=val<=30) */ |
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46 Word16 *fraction /* (o) : Fractional part of Log2. (range: 0<=val<1) */ |
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47 ); |
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48 |
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49 #endif |