14f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* ------------------------------------------------------------------ 24f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Copyright (C) 1998-2009 PacketVideo 34f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 44f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 54f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * you may not use this file except in compliance with the License. 64f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * You may obtain a copy of the License at 74f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 84f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 94f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * 104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * Unless required by applicable law or agreed to in writing, software 114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * express or implied. 144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * See the License for the specific language governing permissions 154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * and limitations under the License. 164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber * ------------------------------------------------------------------- 174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/**************************************************************************************** 194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPortions of this file are derived from the following 3GPP standard: 204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3GPP TS 26.073 224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Available from http://www.3gpp.org 244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas HuberPermission to distribute, modify and use this file under the standard license 274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberterms listed above has been obtained from the copyright holder. 284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber****************************************************************************************/ 294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/* 304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Pathname: ./include/basic_op.h 324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber REVISION HISTORY 354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Revised basic_op.h since the basicop2.c functions were split 374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber up into separate source and header files. This function was 384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber retained because there are legacy GSM AMR C functions that still 394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber include this file. This file now includes the various basicop2 404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber functions' header files instead of defining the function 414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber prototypes. 424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: Including header files with platform specific inline assembly 444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber instructions. 454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Who: Date: 474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Description: 484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INCLUDE DESCRIPTION 514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber This file includes all the basicop2.c functions' header files. 534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber------------------------------------------------------------------------------ 554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber*/ 564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; CONTINUE ONLY IF NOT ALREADY DEFINED 594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifndef BASIC_OP_H 614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#define BASIC_OP_H 624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*---------------------------------------------------------------------------- 644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber; INCLUDES 654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber----------------------------------------------------------------------------*/ 664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basicop_malloc.h" 674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#if defined(PV_ARM_V5) 694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op_arm_v5.h" 704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#elif defined(PV_ARM_GCC_V5) 724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op_arm_gcc_v5.h" 734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#else 754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "basic_op_c_equivalent.h" 764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "add.h" 824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "div_s.h" 834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "div_32.h" 844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "extract_h.h" 854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "extract_l.h" 864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_deposit_h.h" 874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_deposit_l.h" 884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_shr_r.h" 894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "mult_r.h" 904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "norm_l.h" 914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "norm_s.h" 924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "round.h" 934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "shr_r.h" 944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "sub.h" 954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "shr.h" 964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_abs.h" 974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_negate.h" 984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_extract.h" 994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#include "l_abs.h" 1004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber/*--------------------------------------------------------------------------*/ 1014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 1024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huberextern "C" 1034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber{ 1044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 1054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; MACROS 1084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Define module specific macros here 1094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; DEFINES 1134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Include all pre-processor statements here. 1144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; EXTERNAL VARIABLES REFERENCES 1184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Declare variables used in this module but defined elsewhere 1194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; SIMPLE TYPEDEF'S 1234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; ENUMERATED TYPEDEF'S 1274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; STRUCTURES TYPEDEF'S 1314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 1344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; GLOBAL FUNCTION DEFINITIONS 1354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; Function Prototype declaration 1364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 1374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ------------------------------------------------------------------------------ 1394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: mac_32 1404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ------------------------------------------------------------------------------ 1414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 1424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 1444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = 32 bit long signed integer (Word32) whose value falls 1454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber in the range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 1464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1_hi = 16 bit short signed integer (Word16) whose value falls in 1474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1_lo = 16 bit short signed integer (Word16) whose value falls in 1494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var2 <= 0x0000 7fff. 1504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var2_hi = 16 bit short signed integer (Word16) whose value falls in 1514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var2_lo = 16 bit short signed integer (Word16) whose value falls in 1534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var2 <= 0x0000 7fff. 1544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow = pointer to overflow (Flag) 1564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 1584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow -> 1 if the 32 bit mac operation resulted in overflow 1594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 1614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = 32-bit result of L_var3 + (L_var1 * L_var2)(Word32) 1624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 1644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word32 Mac_32(Word32 L_var3, 1654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 L_var1_hi, 1664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 L_var1_lo, 1674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 L_var2_hi, 1684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 L_var2_lo, 1694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow) 1704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 1714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 product; 1724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = L_mac(L_var3, L_var1_hi, L_var2_hi, pOverflow); 1744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber product = mult(L_var1_hi, L_var2_lo, pOverflow); 1764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = L_mac(L_var3, product, 1, pOverflow); 1774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber product = mult(L_var1_lo, L_var2_hi, pOverflow); 1794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = L_mac(L_var3, product, 1, pOverflow); 1804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (L_var3); 1824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 1834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /* 1854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ------------------------------------------------------------------------------ 1864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber FUNCTION NAME: mac_32_16 1874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ------------------------------------------------------------------------------ 1884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber INPUT AND OUTPUT DEFINITIONS 1894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 1904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs: 1914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = 32 bit long signed integer (Word32) whose value falls 1924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber in the range : 0x8000 0000 <= L_var3 <= 0x7fff ffff. 1934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1_hi = 16 bit short signed integer (Word16) whose value falls in 1944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1_lo = 16 bit short signed integer (Word16) whose value falls in 1964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var2 <= 0x0000 7fff. 1974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2= 16 bit short signed integer (Word16) whose value falls in 1984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the range : 0xffff 8000 <= var1 <= 0x0000 7fff. 1994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow = pointer to overflow (Flag) 2004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs: 2024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow -> 1 if the 32 bit mac operation resulted in overflow 2034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Returns: 2054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = 32-bit result of L_var3 + (L_var1 * var2)(Word32) 2064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber */ 2074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word32 Mac_32_16(Word32 L_var3, 2094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 L_var1_hi, 2104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 L_var1_lo, 2114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 var2, 2124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Flag *pOverflow) 2134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 product; 2154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = L_mac(L_var3, L_var1_hi, var2, pOverflow); 2174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber product = mult(L_var1_lo, var2, pOverflow); 2194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var3 = L_mac(L_var3, product, 1, pOverflow); 2204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (L_var3); 2224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 2264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : negate 2274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Negate var1 with saturation, saturate in the case where input is -32768: 2294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber negate(var1) = sub(0,var1). 2304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 2324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 2334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 2344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 <= var1 <= 0x7fff. 2354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs : 2374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber none 2384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 2404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 2414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 <= var_out <= 0x7fff. 2424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 2434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word16 negate(Word16 var1) 2454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (((var1 == MIN_16) ? MAX_16 : -var1)); 2474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 2504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : shl 2524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Arithmetically shift the 16 bit input var1 left var2 positions.Zero fill 2544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber the var2 LSB of the result. If var2 is negative, arithmetically shift 2554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 right by -var2 with sign extension. Saturate the result in case of 2564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber underflows or overflows. 2574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 2594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 2604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 2614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 <= var1 <= 0x7fff. 2624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 2644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 2654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 <= var1 <= 0x7fff. 2664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow : pointer to overflow (Flag) 2684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 2704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var_out 2714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 2724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 <= var_out <= 0x7fff. 2734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 2744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word16 shl(Word16 var1, Word16 var2, Flag *pOverflow) 2764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 var_out = 0; 2784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber OSCL_UNUSED_ARG(pOverflow); 2804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var2 < 0) 2824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 = -var2; 2844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var2 < 15) 2854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var_out = var1 >> var2; 2874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 2894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 2914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var_out = var1 << var2; 2934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var_out >> var2 != var1) 2944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 2954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var_out = (var1 >> 15) ^ MAX_16; 2964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 2984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (var_out); 2994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 3034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : L_shl 3054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Arithmetically shift the 32 bit input L_var1 left var2 positions. Zero 3074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber fill the var2 LSB of the result. If var2 is negative, arithmetically 3084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber shift L_var1 right by -var2 with sign extension. Saturate the result in 3094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber case of underflows or overflows. 3104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 3124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 32 bit long signed integer (Word32) whose value falls in the 3134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. 3144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 3164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 3174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 8000 <= var2 <= 7fff. 3184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow : pointer to overflow (Flag) 3204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 3224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (Word32) whose value falls in the 3234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 3244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 3264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word32 L_shl(Word32 L_var1, Word16 var2, Flag *pOverflow) 3284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 L_var_out = 0; 3304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber OSCL_UNUSED_ARG(pOverflow); 3324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var2 > 0) 3344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out = L_var1 << var2; 3364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (L_var_out >> var2 != L_var1) 3374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out = (L_var1 >> 31) ^ MAX_32; 3394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 3424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 = -var2; 3444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var2 < 31) 3454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out = L_var1 >> var2; 3474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3494f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3504f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3514f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (L_var_out); 3524f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3534f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3544f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3554f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 3564f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3574f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : L_shr 3584f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3594f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Arithmetically shift the 32 bit input L_var1 right var2 positions with 3604f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber sign extension. If var2 is negative, arithmetically shift L_var1 left 3614f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber by -var2 and zero fill the -var2 LSB of the result. Saturate the result 3624f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber in case of underflows or overflows. 3634f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3644f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 3654f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var1 32 bit long signed integer (Word32) whose value falls in the 3664f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var1 <= 0x7fff ffff. 3674f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3684f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 3694f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 3704f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 8000 <= var2 <= 7fff. 3714f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3724f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow : pointer to overflow (Flag) 3734f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3744f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 3754f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 32 bit long signed integer (Word32) whose value falls in the 3764f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 0000 <= L_var_out <= 0x7fff ffff. 3774f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3784f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 3794f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3804f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word32 L_shr(Word32 L_var1, Word16 var2, Flag *pOverflow) 3814f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3824f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word32 L_var_out = 0; 3834f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3844f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber OSCL_UNUSED_ARG(pOverflow); 3854f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3864f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var2 > 0) 3874f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3884f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if (var2 < 31) 3894f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3904f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out = L_var1 >> var2; 3914f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3924f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 3934f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber else 3944f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 3954f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var2 = -var2; 3964f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 3974f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out = L_var1 << (var2) ; 3984f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber if ((L_var_out >> (var2)) != L_var1) 3994f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4004f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber L_var_out = (L_var1 >> 31) ^ MAX_32; 4014f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4024f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4034f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4044f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4054f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (L_var_out); 4064f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4074f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4084f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 4094f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4104f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Function Name : abs_s 4114f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4124f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Absolute value of var1; abs_s(-32768) = 32767. 4134f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4144f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Inputs : 4154f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber var1 4164f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 4174f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x8000 <= var1 <= 0x7fff. 4184f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4194f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber pOverflow : pointer to overflow (Flag) 4204f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4214f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Outputs : 4224f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber none 4234f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4244f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Return Value : 4254f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 16 bit short signed integer (Word16) whose value falls in the 4264f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber range : 0x0000 <= var_out <= 0x7fff. 4274f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4284f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 4294f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4304f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber static inline Word16 abs_s(Word16 var1) 4314f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber { 4324f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4334f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber Word16 y = var1 - (var1 < 0); 4344f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber y = y ^(y >> 15); 4354f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber return (y); 4364f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4374f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber } 4384f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber /*---------------------------------------------------------------------------- 4394f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ; END 4404f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber ----------------------------------------------------------------------------*/ 4414f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#ifdef __cplusplus 4424f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber} 4434f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif 4444f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4454f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4464f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber#endif /* BASIC_OP_H */ 4474f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 4484f1efc098cb5791c3e9f483f2af84aef70d2d0a0Andreas Huber 449