/**********************************************************************
Each of the companies; Lucent, Motorola, Nokia, and Qualcomm (hereinafter 
referred to individually as "Source" or collectively as "Sources") do 
hereby state:

To the extent to which the Source(s) may legally and freely do so, the 
Source(s), upon submission of a Contribution, grant(s) a free, 
irrevocable, non-exclusive, license to the Third Generation Partnership 
Project 2 (3GPP2) and its Organizational Partners: ARIB, CCSA, TIA, TTA, 
and TTC, under the Source's copyright or copyright license rights in the 
Contribution, to, in whole or in part, copy, make derivative works, 
perform, display and distribute the Contribution and derivative works 
thereof consistent with 3GPP2's and each Organizational Partner's 
policies and procedures, with the right to (i) sublicense the foregoing 
rights consistent with 3GPP2's and each Organizational Partner's  policies 
and procedures and (ii) copyright and sell, if applicable) in 3GPP2's name 
or each Organizational Partner's name any 3GPP2 or transposed Publication 
even though this Publication may contain the Contribution or a derivative 
work thereof.  The Contribution shall disclose any known limitations on 
the Source's rights to license as herein provided.

When a Contribution is submitted by the Source(s) to assist the 
formulating groups of 3GPP2 or any of its Organizational Partners, it 
is proposed to the Committee as a basis for discussion and is not to 
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specifically reserve(s) the right to amend or modify the material 
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With respect to the Software necessary for the practice of any or 
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the rights of the Source(s) in and to copyright or copyright license 
rights subject to such commitment are assigned or transferred, the 
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*******************************************************************/
 
/*============================================================================*/

/*===================================================================*/
/*                                                                   */
/* Conexant Systems, Inc., Qualcomm Inc., Nokia Inc,. Nortel         */
/* Networks, Lucent Technologies, and Motorola Inc. grants a free,   */
/* irrevocable license to 3GPP2 and its Organizational Partners to   */
/* incorporate text or other copyrightable material contained in the */
/* contribution and any modifications thereof in the creation of     */
/* 3GPP2 publications; to copyright and sell in Organizational       */
/* Partner's name any Organizational Partner's standards publication */
/* even though it may include portions of the contribution; and at   */
/* the Organizational Partner's sole discretion to permit others to  */
/* reproduce in whole or in part such contributions or the resulting */
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/*                                                                   */
/*-------------------------------------------------------------------*/
/*                                                                   */
/* Copyright 2001 Conexant Systems, Inc.  This document is provided  */
/* as a discussion instrument only and is not binding on Conexant    */
/* Systems, Inc. The contributor reserves the right to add to, amend */
/* or otherwise modify the contents thereof.                         */
/*                                                                   */
/* Conexant Systems, Inc. grants a free, irrevocable license to 3GPP2*/
/* and its Organization Partners to incorporate, for any legitimate  */
/* 3GPP2 purpose, any copyrightable material contained in this       */
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/*                                                                   */
/*-------------------------------------------------------------------*/
/*                                                                   */
/* Copyright QUALCOMM Incorporated. All rights reserved.             */
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/* the statements contained herein.                                  */
/* QUALCOMM Incorporated grants a free, irrevocable license to 3GPP2 */
/* and its Organization Partners to incorporate text or other        */
/* copyrightable material contained in the  contribution and any     */
/* modifications thereof in the creation of 3GPP2 publications;      */
/* to copyright and sell in Organizational Partner's name any        */
/* Organizational Partner's standards publication even though it may */
/* include portions of the contribution; and at the Organization     */
/* Partner's sole discretion to permit others to reproduce in whole  */
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/* this contribution. A license will be made available to applicants */
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/* of any unfair discrimination.                                     */
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/* implication, estoppel, or otherwise any license or right under    */
/* any patent, whether or not the use of information herein          */
/* necessarily employs an invention of any existing or later issued  */
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/*                                                                   */
/* The proposals in this submission have been formulated by Nokia,   */
/* Inc. (Nokia), to assist the 3GPP2 Standards Committee. This       */
/* document is offered  to the committee as a basis for discussion   */
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/* specifically reserves the right to add to, or amend, the          */
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/* the use of information herein necessarily employs an invention of */
/* any existing or later issued patent.                              */
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/*-------------------------------------------------------------------*/
/*                                                                   */
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/* its Organizational Partners to incorporate text or other          */
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/* modifications thereof in the creation of 3GPP2 publications; to   */
/* copyright and sell in Organizational Partner's name any           */
/* Organizational Partner's standards publication even though it may */
/* include portions of the contribution; and at the Organizational   */
/* Partner's sole discretion to permit others to reproduce in whole  */
/* or in part such contributions or the resulting Organizational     */
/* Partner's standards publication. The contributor must also be     */
/* willing to grant licenses under such contributor copyrights to    */
/* third parties on reasonable, non-discriminatory terms and         */
/* conditions, as appropriate.                                       */
/*                                                                   */
/*-------------------------------------------------------------------*/
/*                                                                   */
/* Notice:                                                           */
/* This contribution has been prepared by the contributor to assist  */
/* 3GPP2 Technical Specifications Group C. This document is offered  */
/* to 3GPP2 Technical Specifications Group C as a basis for          */
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/* withdraw the statements contained herein.                         */
/*                                                                   */
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/* purposes is prohibited.                                           */
/*                                                                   */
/*-------------------------------------------------------------------*/
/*                                                                   */
/* Grant of license Motorola Inc. grants a free, irrevocable license */
/* to 3GPP2 and its organizational partners to incorporate Motorola- */
/* supplied text or other copyrightable material contained in the    */
/* contribution and any modifications thereof in the creation of     */ 
/* 3GPP2 publications, to copyright and sell in organizational       */
/* partners name any organizational partners standards publications  */
/* even though it may include portions of the contribution; and at   */
/* the organizational partners sole discretion to permit others      */
/* to reproduce in whole or in part such contributions or the        */
/* resulting organizational partners standards publication. Motorola */
/* is also willing to grant licenses under such Motorola copyrights  */
/* to third parties on reasonable, non-discriminatory terms and      */
/* conditions, as appropriate.                                       */
/*                                                                   */
/* Notice:                                                           */
/* This document has been prepared by Motorola Inc. to assist the    */
/* 3GPP2 standards committee. This document is offered to the        */
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/* Specifically, Motorola Inc. reserves the right to modify, amend,  */
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/* to 3GPP2 and its organizational partners to copy any portion of   */
/* this document for the legitimate purposes of the 3GPP2.  Copying  */
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/* and agrees that a license under those rights will be made         */
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/* implication, estoppel, or otherwise any license or right under    */
/* any patent, whether or not the use of information herein          */
/* necessarily employs an invention of any existing or later issued  */
/* patent, or copyright.                                             */
/*                                                                   */
/* Notice                                                            */
/* Permission is granted to 3GPP2 participants to copy any portion of*/
/* this contribution for the legitimate purpose of the 3GPP2.        */
/* Copying this contribution for monetary gain or other non-3GPP2    */
/* purpose is prohibited.                                            */
/*                                                                   */
/*===================================================================*/
/* FILE: basic_op40.c                                                */
/*-------------------------------------------------------------------*/
/* PURPOSE : Modified TIA basic operations for 40-bit accumulators   */
/*===================================================================*/

/*___________________________________________________________________________
 |                                                                           
 |           Basic arithmetic operators using 16-bit/40-bit arithmatic   
 |                                                                           
 | These operators come originally from ETSI TCH-HS library 
 | (used in GSM EFR 13kbit/s). 
 | They were modified to support 16-bit/40-bit arithmetic operations.  
 | Standard 32-bit basic operators are replaced by 40-bit operators to be 
 | compatible with   
 | most of the new 40-bit DSP in the industry.  The use of 40 bits        
 | accumulator allow the DSP to avoid overflow/saturation in the calculation 
 | of energy, correlation, filtering or any other procedure that need more than
 | 32 bits in the summation of product.  These 40-bit operators should be  
 | used when the target platform is DSP with 40-bit accumulator.            
 |                                                                           
 | Word40 is represented using a floating point format (double)
 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 | Because some platforms do not allow integer of 40 bits, a floating point 
 | format is used, with at less 40 bits in the mantissa, to represent long   
 | integer of 40 bits.  MAX_40 and MIN_40 are defined in this file.          
 |____________________________________________________________________________
*/

/***********************************************************************/

/*_________________________________________________________________________
 |                                                                         |
 |                            Include Files                                |
 |_________________________________________________________________________|
*/

#include <math.h>

#include "typedef_fx.h"
#include "basic_op40.h"

#ifdef WMOPS_FX
#include "typedef_fx.h"
#include "main_fx.h"
#include "const_fx.h"
#include "ext_var_fx.h"
#include "lib_wmp_fx.h"
#endif

//*************************************************************************
// local functions for 40 bit accumulator	 
/*___________________________________________________________________________
 |                                                                           |
 |   Function Name : L_shift_left40                                          |
 |                                                                           |
 |   Purpose :                                                               |