1 /*
2 File: CAVectorUnit.h
3 Abstract: Part of CoreAudio Utility Classes
4 Version: 1.1
5
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46 */
47 #ifndef __CAVectorUnit_h__
48 #define __CAVectorUnit_h__
49
50 #include <TargetConditionals.h>
51 #include "CAVectorUnitTypes.h"
52 #include <stdlib.h>
53 #include <stdio.h>
54
55 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
56 #include <CoreFoundation/CFBase.h>
57 #else
58 #include "CFBase.h"
59 #endif
60
61 // Unify checks for vector units.
62 // Allow setting an environment variable "CA_NoVector" to turn off vectorized code at runtime (very useful for performance testing).
63
64 extern int gCAVectorUnitType;
65
66 #ifdef __cplusplus
67 extern "C" {
68 #endif
69
70 extern SInt32 CAVectorUnit_Examine(); // expensive. use GetType() for lazy initialization and caching.
71
CAVectorUnit_GetType()72 static inline SInt32 CAVectorUnit_GetType()
73 {
74 int x = gCAVectorUnitType;
75 return (x != kVecUninitialized) ? x : CAVectorUnit_Examine();
76 }
77
CAVectorUnit_HasVectorUnit()78 static inline Boolean CAVectorUnit_HasVectorUnit()
79 {
80 return CAVectorUnit_GetType() > kVecNone;
81 }
82
83 #ifdef __cplusplus
84 }
85 #endif
86
87
88 #ifdef __cplusplus
89 class CAVectorUnit {
90 public:
GetVectorUnitType()91 static SInt32 GetVectorUnitType() { return CAVectorUnit_GetType(); }
HasVectorUnit()92 static bool HasVectorUnit() { return GetVectorUnitType() > kVecNone; }
HasAltivec()93 static bool HasAltivec() { return GetVectorUnitType() == kVecAltivec; }
HasSSE2()94 static bool HasSSE2() { return GetVectorUnitType() >= kVecSSE2; }
HasSSE3()95 static bool HasSSE3() { return GetVectorUnitType() >= kVecSSE3; }
HasAVX1()96 static bool HasAVX1() { return GetVectorUnitType() >= kVecAVX1; }
HasNeon()97 static bool HasNeon() { return GetVectorUnitType() == kVecNeon; }
98 };
99 #endif
100
101 #endif // __CAVectorUnit_h__
102