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/* ------------------------------------------------------------------
* Copyright (C) 1998-2009 PacketVideo
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied.
* See the License for the specific language governing permissions
* and limitations under the License.
* -------------------------------------------------------------------
*/
/*
------------------------------------------------------------------------------
PacketVideo Corp.
MP3 Decoder Library
Pathname: ./cpp/include/pv_mp3dec_fxd_op_c_equivalent.h
Date: 12/06/2005
------------------------------------------------------------------------------
REVISION HISTORY
Description:
------------------------------------------------------------------------------
INCLUDE DESCRIPTION
------------------------------------------------------------------------------
*/
#ifndef PV_MP3DEC_FXD_OP_C_EQUIVALENT
#define PV_MP3DEC_FXD_OP_C_EQUIVALENT
#ifdef __cplusplus
extern "C"
{
#endif
#include "pvmp3_audio_type_defs.h"
#define Qfmt_31(a) (Int32)((float)a*0x7FFFFFFF)
#define Qfmt15(x) (Int16)(x*((Int32)1<<15) + (x>=0?0.5F:-0.5F))
__inline int32 pv_abs(int32 a)
{
int32 b = (a < 0) ? -a : a;
return b;
}
__inline Int32 fxp_mul32_Q30(const Int32 a, const Int32 b)
{
return (Int32)(((int64)(a) * b) >> 30);
}
__inline Int32 fxp_mac32_Q30(const Int32 a, const Int32 b, Int32 L_add)
{
return (L_add + (Int32)(((int64)(a) * b) >> 30));
}
__inline Int32 fxp_mul32_Q32(const Int32 a, const Int32 b)
{
return (Int32)(((int64)(a) * b) >> 32);
}
__inline Int32 fxp_mul32_Q28(const Int32 a, const Int32 b)
{
return (Int32)(((int64)(a) * b) >> 28);
}
__inline Int32 fxp_mul32_Q27(const Int32 a, const Int32 b)
{
return (Int32)(((int64)(a) * b) >> 27);
}
__inline Int32 fxp_mul32_Q26(const Int32 a, const Int32 b)
{
return (Int32)(((int64)(a) * b) >> 26);
}
__inline Int32 fxp_mac32_Q32(Int32 L_add, const Int32 a, const Int32 b)
{
return (L_add + (Int32)(((int64)(a) * b) >> 32));
}
__inline Int32 fxp_msb32_Q32(Int32 L_sub, const Int32 a, const Int32 b)
{
return (L_sub - ((Int32)(((int64)(a) * b) >> 32)));
}
__inline Int32 fxp_mul32_Q29(const Int32 a, const Int32 b)
{
return (Int32)(((int64)(a) * b) >> 29);
}
#ifdef __cplusplus
}
#endif
#endif /* PV_MP3DEC_FXD_OP_C_EQUIVALENT */
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