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/*
* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
/*
* This file contains the function WebRtcSpl_AddSatW32().
* The description header can be found in signal_processing_library.h
*
*/
#include "signal_processing_library.h"
#ifndef SPL_NO_DOUBLE_IMPLEMENTATIONS
WebRtc_Word32 WebRtcSpl_AddSatW32(WebRtc_Word32 var1, WebRtc_Word32 var2)
{
WebRtc_Word32 l_sum;
// perform long addition
l_sum = var1 + var2;
// check for under or overflow
if (WEBRTC_SPL_IS_NEG(var1))
{
if (WEBRTC_SPL_IS_NEG(var2) && !WEBRTC_SPL_IS_NEG(l_sum))
{
l_sum = (WebRtc_Word32)0x80000000;
}
} else
{
if (!WEBRTC_SPL_IS_NEG(var2) && WEBRTC_SPL_IS_NEG(l_sum))
{
l_sum = (WebRtc_Word32)0x7FFFFFFF;
}
}
return l_sum;
}
#endif
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