FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/mac_32.h @ 421:09534cdc59ec
libtwamr/tw_amr.h: rm trailing spaces from enum Mode list
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 07 May 2024 05:40:10 +0000 |
parents | 61047a2912a2 |
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libtwamr: integrate mac_32.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 : mac_32.h |
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11 * Purpose : 32 x 32 and 32 x 16 bit DPF multiy & accumulate |
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12 * (similar as Mpy_32 and Mpy_32_16 in oper_32b.c) |
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13 * |
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14 ******************************************************************************** |
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15 */ |
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16 |
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17 /* |
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18 ******************************************************************************** |
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19 * MODULE INCLUDE FILE AND VERSION ID |
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20 ******************************************************************************** |
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21 */ |
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22 #ifndef mac_32_h |
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23 #define mac_32_h "$Id $" |
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24 |
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25 /* |
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26 ******************************************************************************** |
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27 * INCLUDE FILES |
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28 ******************************************************************************** |
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29 */ |
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30 #include "typedef.h" |
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31 |
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32 /* |
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33 ******************************************************************************** |
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34 * PUBLIC PROGRAM CODE |
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35 ******************************************************************************** |
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36 */ |
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37 |
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38 /***************************************************************************** |
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39 * Function Mac_32() * |
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40 * * |
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41 * Multiply two 32 bit integers (DPF) and accumulate with (normal) 32 bit * |
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42 * integer. The multiplication result is divided by 2**31 * |
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43 * * |
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44 * L_32 = L_32 + (hi1*hi2)<<1 + ( (hi1*lo2)>>15 + (lo1*hi2)>>15 )<<1 * |
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45 * * |
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46 * This operation can also be viewed as the multiplication of two Q31 * |
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47 * number and the result is also in Q31. * |
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48 * * |
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49 * Arguments: * |
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50 * * |
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51 * hi1 hi part of first number * |
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52 * lo1 lo part of first number * |
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53 * hi2 hi part of second number * |
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54 * lo2 lo part of second number * |
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55 * * |
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56 ***************************************************************************** |
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57 */ |
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58 |
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59 Word32 Mac_32 (Word32 L_32, Word16 hi1, Word16 lo1, Word16 hi2, Word16 lo2); |
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60 |
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61 /***************************************************************************** |
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62 * Function Mac_32_16() * |
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63 * * |
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64 * Multiply a 16 bit integer by a 32 bit (DPF) and accumulate with (normal)* |
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65 * 32 bit integer. The multiplication result is divided by 2**15 * |
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66 * * |
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67 * * |
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68 * L_32 = L_32 + (hi1*lo2)<<1 + ((lo1*lo2)>>15)<<1 * |
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69 * * |
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70 * Arguments: * |
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71 * * |
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72 * hi hi part of 32 bit number. * |
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73 * lo lo part of 32 bit number. * |
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74 * n 16 bit number. * |
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75 * * |
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76 ***************************************************************************** |
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77 */ |
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78 |
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79 Word32 Mac_32_16 (Word32 L_32, Word16 hi, Word16 lo, Word16 n); |
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80 |
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81 #endif |