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- /*
- ********************************************************************************
- *
- * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
- * R99 Version 3.3.0
- * REL-4 Version 4.1.0
- *
- ********************************************************************************
- *
- * File : mac_32.h
- * Purpose : 32 x 32 and 32 x 16 bit DPF multiy & accumulate
- * (similar as Mpy_32 and Mpy_32_16 in oper_32b.c)
- *
- ********************************************************************************
- */
- /*
- ********************************************************************************
- * MODULE INCLUDE FILE AND VERSION ID
- ********************************************************************************
- */
- #ifndef mac_32_h
- #define mac_32_h "$Id $"
- /*
- ********************************************************************************
- * INCLUDE FILES
- ********************************************************************************
- */
- #include "typedef.h"
- #include "basic_op.h"
- #include "oper_32b.h"
- #include "count.h"
- /*
- ********************************************************************************
- * PUBLIC PROGRAM CODE
- ********************************************************************************
- */
- /*****************************************************************************
- * Function Mac_32() *
- * *
- * Multiply two 32 bit integers (DPF) and accumulate with (normal) 32 bit *
- * integer. The multiplication result is divided by 2**31 *
- * *
- * L_32 = L_32 + (hi1*hi2)<<1 + ( (hi1*lo2)>>15 + (lo1*hi2)>>15 )<<1 *
- * *
- * This operation can also be viewed as the multiplication of two Q31 *
- * number and the result is also in Q31. *
- * *
- * Arguments: *
- * *
- * hi1 hi part of first number *
- * lo1 lo part of first number *
- * hi2 hi part of second number *
- * lo2 lo part of second number *
- * *
- *****************************************************************************
- */
- Word32 Mac_32 (Word32 L_32, Word16 hi1, Word16 lo1, Word16 hi2, Word16 lo2);
- /*****************************************************************************
- * Function Mac_32_16() *
- * *
- * Multiply a 16 bit integer by a 32 bit (DPF) and accumulate with (normal)*
- * 32 bit integer. The multiplication result is divided by 2**15 *
- * *
- * *
- * L_32 = L_32 + (hi1*lo2)<<1 + ((lo1*lo2)>>15)<<1 *
- * *
- * Arguments: *
- * *
- * hi hi part of 32 bit number. *
- * lo lo part of 32 bit number. *
- * n 16 bit number. *
- * *
- *****************************************************************************
- */
- Word32 Mac_32_16 (Word32 L_32, Word16 hi, Word16 lo, Word16 n);
- #endif
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