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+/* -----------------------------------------------------------------------------
+Software License for The Fraunhofer FDK AAC Codec Library for Android
+
+© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
+Forschung e.V. All rights reserved.
+
+ 1.    INTRODUCTION
+The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
+that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
+scheme for digital audio. This FDK AAC Codec software is intended to be used on
+a wide variety of Android devices.
+
+AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
+general perceptual audio codecs. AAC-ELD is considered the best-performing
+full-bandwidth communications codec by independent studies and is widely
+deployed. AAC has been standardized by ISO and IEC as part of the MPEG
+specifications.
+
+Patent licenses for necessary patent claims for the FDK AAC Codec (including
+those of Fraunhofer) may be obtained through Via Licensing
+(www.vialicensing.com) or through the respective patent owners individually for
+the purpose of encoding or decoding bit streams in products that are compliant
+with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
+Android devices already license these patent claims through Via Licensing or
+directly from the patent owners, and therefore FDK AAC Codec software may
+already be covered under those patent licenses when it is used for those
+licensed purposes only.
+
+Commercially-licensed AAC software libraries, including floating-point versions
+with enhanced sound quality, are also available from Fraunhofer. Users are
+encouraged to check the Fraunhofer website for additional applications
+information and documentation.
+
+2.    COPYRIGHT LICENSE
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted without payment of copyright license fees provided that you
+satisfy the following conditions:
+
+You must retain the complete text of this software license in redistributions of
+the FDK AAC Codec or your modifications thereto in source code form.
+
+You must retain the complete text of this software license in the documentation
+and/or other materials provided with redistributions of the FDK AAC Codec or
+your modifications thereto in binary form. You must make available free of
+charge copies of the complete source code of the FDK AAC Codec and your
+modifications thereto to recipients of copies in binary form.
+
+The name of Fraunhofer may not be used to endorse or promote products derived
+from this library without prior written permission.
+
+You may not charge copyright license fees for anyone to use, copy or distribute
+the FDK AAC Codec software or your modifications thereto.
+
+Your modified versions of the FDK AAC Codec must carry prominent notices stating
+that you changed the software and the date of any change. For modified versions
+of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
+must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
+AAC Codec Library for Android."
+
+3.    NO PATENT LICENSE
+
+NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
+limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
+Fraunhofer provides no warranty of patent non-infringement with respect to this
+software.
+
+You may use this FDK AAC Codec software or modifications thereto only for
+purposes that are authorized by appropriate patent licenses.
+
+4.    DISCLAIMER
+
+This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
+holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
+including but not limited to the implied warranties of merchantability and
+fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
+or consequential damages, including but not limited to procurement of substitute
+goods or services; loss of use, data, or profits, or business interruption,
+however caused and on any theory of liability, whether in contract, strict
+liability, or tort (including negligence), arising in any way out of the use of
+this software, even if advised of the possibility of such damage.
+
+5.    CONTACT INFORMATION
+
+Fraunhofer Institute for Integrated Circuits IIS
+Attention: Audio and Multimedia Departments - FDK AAC LL
+Am Wolfsmantel 33
+91058 Erlangen, Germany
+
+www.iis.fraunhofer.de/amm
+amm-info@iis.fraunhofer.de
+----------------------------------------------------------------------------- */
+
+/******************* Library for basic calculation routines ********************
+
+   Author(s):   M. Lohwasser, M. Gayer
+
+   Description: fixed point intrinsics
+
+*******************************************************************************/
+
+#if !defined(FIXMADD_H)
+#define FIXMADD_H
+
+#include "FDK_archdef.h"
+#include "machine_type.h"
+#include "fixmul.h"
+
+#if defined(__arm__)
+#include "arm/fixmadd_arm.h"
+
+#endif /* all cores */
+
+/*************************************************************************
+ *************************************************************************
+    Software fallbacks for missing functions.
+**************************************************************************
+**************************************************************************/
+
+/* Divide by two versions. */
+
+#if !defined(FUNCTION_fixmadddiv2_DD)
+inline FIXP_DBL fixmadddiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
+  return (x + fMultDiv2(a, b));
+}
+#endif
+
+#if !defined(FUNCTION_fixmadddiv2_SD)
+inline FIXP_DBL fixmadddiv2_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
+#ifdef FUNCTION_fixmadddiv2_DS
+  return fixmadddiv2_DS(x, b, a);
+#else
+  return fixmadddiv2_DD(x, FX_SGL2FX_DBL(a), b);
+#endif
+}
+#endif
+
+#if !defined(FUNCTION_fixmadddiv2_DS)
+inline FIXP_DBL fixmadddiv2_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
+#ifdef FUNCTION_fixmadddiv2_SD
+  return fixmadddiv2_SD(x, b, a);
+#else
+  return fixmadddiv2_DD(x, a, FX_SGL2FX_DBL(b));
+#endif
+}
+#endif
+
+#if !defined(FUNCTION_fixmadddiv2_SS)
+inline FIXP_DBL fixmadddiv2_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
+  return x + fMultDiv2(a, b);
+}
+#endif
+
+#if !defined(FUNCTION_fixmsubdiv2_DD)
+inline FIXP_DBL fixmsubdiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
+  return (x - fMultDiv2(a, b));
+}
+#endif
+
+#if !defined(FUNCTION_fixmsubdiv2_SD)
+inline FIXP_DBL fixmsubdiv2_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
+#ifdef FUNCTION_fixmsubdiv2_DS
+  return fixmsubdiv2_DS(x, b, a);
+#else
+  return fixmsubdiv2_DD(x, FX_SGL2FX_DBL(a), b);
+#endif
+}
+#endif
+
+#if !defined(FUNCTION_fixmsubdiv2_DS)
+inline FIXP_DBL fixmsubdiv2_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
+#ifdef FUNCTION_fixmsubdiv2_SD
+  return fixmsubdiv2_SD(x, b, a);
+#else
+  return fixmsubdiv2_DD(x, a, FX_SGL2FX_DBL(b));
+#endif
+}
+#endif
+
+#if !defined(FUNCTION_fixmsubdiv2_SS)
+inline FIXP_DBL fixmsubdiv2_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
+  return x - fMultDiv2(a, b);
+}
+#endif
+
+#if !defined(FUNCTION_fixmadddiv2BitExact_DD)
+#define FUNCTION_fixmadddiv2BitExact_DD
+inline FIXP_DBL fixmadddiv2BitExact_DD(FIXP_DBL x, const FIXP_DBL a,
+                                       const FIXP_DBL b) {
+  return x + fMultDiv2BitExact(a, b);
+}
+#endif
+#if !defined(FUNCTION_fixmadddiv2BitExact_SD)
+#define FUNCTION_fixmadddiv2BitExact_SD
+inline FIXP_DBL fixmadddiv2BitExact_SD(FIXP_DBL x, const FIXP_SGL a,
+                                       const FIXP_DBL b) {
+#ifdef FUNCTION_fixmadddiv2BitExact_DS
+  return fixmadddiv2BitExact_DS(x, b, a);
+#else
+  return x + fMultDiv2BitExact(a, b);
+#endif
+}
+#endif
+#if !defined(FUNCTION_fixmadddiv2BitExact_DS)
+#define FUNCTION_fixmadddiv2BitExact_DS
+inline FIXP_DBL fixmadddiv2BitExact_DS(FIXP_DBL x, const FIXP_DBL a,
+                                       const FIXP_SGL b) {
+#ifdef FUNCTION_fixmadddiv2BitExact_SD
+  return fixmadddiv2BitExact_SD(x, b, a);
+#else
+  return x + fMultDiv2BitExact(a, b);
+#endif
+}
+#endif
+
+#if !defined(FUNCTION_fixmsubdiv2BitExact_DD)
+#define FUNCTION_fixmsubdiv2BitExact_DD
+inline FIXP_DBL fixmsubdiv2BitExact_DD(FIXP_DBL x, const FIXP_DBL a,
+                                       const FIXP_DBL b) {
+  return x - fMultDiv2BitExact(a, b);
+}
+#endif
+#if !defined(FUNCTION_fixmsubdiv2BitExact_SD)
+#define FUNCTION_fixmsubdiv2BitExact_SD
+inline FIXP_DBL fixmsubdiv2BitExact_SD(FIXP_DBL x, const FIXP_SGL a,
+                                       const FIXP_DBL b) {
+#ifdef FUNCTION_fixmsubdiv2BitExact_DS
+  return fixmsubdiv2BitExact_DS(x, b, a);
+#else
+  return x - fMultDiv2BitExact(a, b);
+#endif
+}
+#endif
+#if !defined(FUNCTION_fixmsubdiv2BitExact_DS)
+#define FUNCTION_fixmsubdiv2BitExact_DS
+inline FIXP_DBL fixmsubdiv2BitExact_DS(FIXP_DBL x, const FIXP_DBL a,
+                                       const FIXP_SGL b) {
+#ifdef FUNCTION_fixmsubdiv2BitExact_SD
+  return fixmsubdiv2BitExact_SD(x, b, a);
+#else
+  return x - fMultDiv2BitExact(a, b);
+#endif
+}
+#endif
+
+  /* Normal versions */
+
+#if !defined(FUNCTION_fixmadd_DD)
+inline FIXP_DBL fixmadd_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
+  return fixmadddiv2_DD(x, a, b) << 1;
+}
+#endif
+#if !defined(FUNCTION_fixmadd_SD)
+inline FIXP_DBL fixmadd_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
+#ifdef FUNCTION_fixmadd_DS
+  return fixmadd_DS(x, b, a);
+#else
+  return fixmadd_DD(x, FX_SGL2FX_DBL(a), b);
+#endif
+}
+#endif
+#if !defined(FUNCTION_fixmadd_DS)
+inline FIXP_DBL fixmadd_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
+#ifdef FUNCTION_fixmadd_SD
+  return fixmadd_SD(x, b, a);
+#else
+  return fixmadd_DD(x, a, FX_SGL2FX_DBL(b));
+#endif
+}
+#endif
+#if !defined(FUNCTION_fixmadd_SS)
+inline FIXP_DBL fixmadd_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
+  return (x + fMultDiv2(a, b)) << 1;
+}
+#endif
+
+#if !defined(FUNCTION_fixmsub_DD)
+inline FIXP_DBL fixmsub_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
+  return fixmsubdiv2_DD(x, a, b) << 1;
+}
+#endif
+#if !defined(FUNCTION_fixmsub_SD)
+inline FIXP_DBL fixmsub_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
+#ifdef FUNCTION_fixmsub_DS
+  return fixmsub_DS(x, b, a);
+#else
+  return fixmsub_DD(x, FX_SGL2FX_DBL(a), b);
+#endif
+}
+#endif
+#if !defined(FUNCTION_fixmsub_DS)
+inline FIXP_DBL fixmsub_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
+#ifdef FUNCTION_fixmsub_SD
+  return fixmsub_SD(x, b, a);
+#else
+  return fixmsub_DD(x, a, FX_SGL2FX_DBL(b));
+#endif
+}
+#endif
+#if !defined(FUNCTION_fixmsub_SS)
+inline FIXP_DBL fixmsub_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
+  return (x - fMultDiv2(a, b)) << 1;
+}
+#endif
+
+#if !defined(FUNCTION_fixpow2adddiv2_D)
+#ifdef FUNCTION_fixmadddiv2_DD
+#define fixpadddiv2_D(x, a) fixmadddiv2_DD(x, a, a)
+#else
+inline INT fixpadddiv2_D(FIXP_DBL x, const FIXP_DBL a) {
+  return (x + fPow2Div2(a));
+}
+#endif
+#endif
+#if !defined(FUNCTION_fixpow2add_D)
+inline INT fixpadd_D(FIXP_DBL x, const FIXP_DBL a) { return (x + fPow2(a)); }
+#endif
+
+#if !defined(FUNCTION_fixpow2adddiv2_S)
+#ifdef FUNCTION_fixmadddiv2_SS
+#define fixpadddiv2_S(x, a) fixmadddiv2_SS(x, a, a)
+#else
+inline INT fixpadddiv2_S(FIXP_DBL x, const FIXP_SGL a) {
+  return (x + fPow2Div2(a));
+}
+#endif
+#endif
+#if !defined(FUNCTION_fixpow2add_S)
+inline INT fixpadd_S(FIXP_DBL x, const FIXP_SGL a) { return (x + fPow2(a)); }
+#endif
+
+#endif /* FIXMADD_H */