/*

Copyright (C) 2016 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

Part of Core Audio Public Utility Classes

*/

#ifndef __CAVectorUnit_h__

#define __CAVectorUnit_h__

#include <TargetConditionals.h>

#include "CAVectorUnitTypes.h"

#include <stdlib.h>

#include <stdio.h>

#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)

    #include <CoreFoundation/CFBase.h>

#else

    #include "CFBase.h"

#endif

// Unify checks for vector units.

// Allow setting an environment variable "CA_NoVector" to turn off vectorized code at runtime (very useful for performance testing).

extern int gCAVectorUnitType;

#ifdef __cplusplus

extern "C" {

#endif

extern SInt32 CAVectorUnit_Examine();   // expensive. use GetType() for lazy initialization and caching.

static inline SInt32 CAVectorUnit_GetType()

{

    int x = gCAVectorUnitType;

    return (x != kVecUninitialized) ? x : CAVectorUnit_Examine();

}

static inline Boolean CAVectorUnit_HasVectorUnit()

{

    return CAVectorUnit_GetType() > kVecNone;

}

#ifdef __cplusplus

}

#endif

#ifdef __cplusplus

class CAVectorUnit {

public:

    static SInt32       GetVectorUnitType() { return CAVectorUnit_GetType(); }

    static bool         HasVectorUnit() { return GetVectorUnitType() > kVecNone; }

    static bool         HasAltivec() { return GetVectorUnitType() == kVecAltivec; }

    static bool         HasSSE2() { return GetVectorUnitType() >= kVecSSE2; }

    static bool         HasSSE3() { return GetVectorUnitType() >= kVecSSE3; }

    static bool         HasAVX1() { return GetVectorUnitType() >= kVecAVX1; }

    static bool         HasNeon() { return GetVectorUnitType() == kVecNeon; }

};

#endif

#endif // __CAVectorUnit_h__