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Wwise SDK 2019.1.9
AkFPUtilities.h
1 /*******************************************************************************
2 The content of this file includes portions of the AUDIOKINETIC Wwise Technology
3 released in source code form as part of the SDK installer package.
4 
5 Commercial License Usage
6 
7 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology
8 may use this file in accordance with the end user license agreement provided
9 with the software or, alternatively, in accordance with the terms contained in a
10 written agreement between you and Audiokinetic Inc.
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12 Apache License Usage
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14 Alternatively, this file may be used under the Apache License, Version 2.0 (the
15 "Apache License"); you may not use this file except in compliance with the
16 Apache License. You may obtain a copy of the Apache License at
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23 
24  Version: <VERSION> Build: <BUILDNUMBER>
25  Copyright (c) <COPYRIGHTYEAR> Audiokinetic Inc.
26 *******************************************************************************/
27 
28 /// \file
29 /// Floating point performance utilities.
30 
31 #ifndef _AK_FP_UTILS_H_
32 #define _AK_FP_UTILS_H_
33 
34 #include <AK/SoundEngine/Common/AkTypes.h>
35 
36 #define AK_FSEL( __a__, __b__, __c__) (((__a__) >= 0) ? (__b__) : (__c__))
37 
38 /// Branchless (where available) version returning minimum value between two AkReal32 values
39 static AkForceInline AkReal32 AK_FPMin( AkReal32 fA, AkReal32 fB )
40 {
41  return (fA < fB ? fA : fB);
42 }
43 
44 /// Branchless (where available) version returning maximum value between two AkReal32 values
45 static AkForceInline AkReal32 AK_FPMax( AkReal32 fA, AkReal32 fB )
46 {
47  return (fA > fB ? fA : fB);
48 }
49 
50 /// Branchless comparison (where available) setting 3rd argument to 4th argument if 1st argument is greater than 2nd argument.
51 static AkForceInline void AK_FPSetValGT( AkReal32 in_fComparandA, AkReal32 in_fComparandB, AkReal32 & io_fVariableToSet, AkReal32 in_fValueIfTrue )
52 {
53  if ( in_fComparandA > in_fComparandB )
54  io_fVariableToSet = in_fValueIfTrue;
55 }
56 
57 /// Branchless comparison (where available) setting 3rd argument to 4th argument if 1st argument is greater than equal 2nd argument.
58 static AkForceInline void AK_FPSetValGTE( AkReal32 in_fComparandA, AkReal32 in_fComparandB, AkReal32 & io_fVariableToSet, AkReal32 in_fValueIfTrue )
59 {
60  if ( in_fComparandA >= in_fComparandB )
61  io_fVariableToSet = in_fValueIfTrue;
62 }
63 
64 /// Branchless comparison (where available) setting 3rd argument to 4th argument if 1st argument is less than 2nd argument.
65 static AkForceInline void AK_FPSetValLT( AkReal32 in_fComparandA, AkReal32 in_fComparandB, AkReal32 & io_fVariableToSet, AkReal32 in_fValueIfTrue )
66 {
67  if ( in_fComparandA < in_fComparandB )
68  io_fVariableToSet = in_fValueIfTrue;
69 }
70 
71 /// Branchless comparison (where available) setting 3rd argument to 4th argument if 1st argument is less than equal 2nd argument.
72 static AkForceInline void AK_FPSetValLTE( AkReal32 in_fComparandA, AkReal32 in_fComparandB, AkReal32 & io_fVariableToSet, AkReal32 in_fValueIfTrue )
73 {
74  if ( in_fComparandA <= in_fComparandB )
75  io_fVariableToSet = in_fValueIfTrue;
76 }
77 
78 #endif //_AK_FP_UTILS_H_
79