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RocksDB for Erlang

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rocksdb deps CRoaring include roaring isadetection.h
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deps/CRoaring/include/roaring/isadetection.h 

#ifndef ROARING_ISADETECTION_H

#define ROARING_ISADETECTION_H

#if defined(__x86_64__) || defined(_M_AMD64)  // x64



#ifndef CROARING_COMPILER_SUPPORTS_AVX512

#ifdef __has_include

// We want to make sure that the AVX-512 functions are only built on compilers

// fully supporting AVX-512.

#if __has_include(<avx512vbmi2intrin.h>)

#define CROARING_COMPILER_SUPPORTS_AVX512 1

#endif  // #if __has_include(<avx512vbmi2intrin.h>)

#endif  // #ifdef __has_include



// Visual Studio 2019 and up support AVX-512

#ifdef _MSC_VER

#if _MSC_VER >= 1920

#define CROARING_COMPILER_SUPPORTS_AVX512 1

#endif  // #if _MSC_VER >= 1920

#endif  // #ifdef _MSC_VER



#ifndef CROARING_COMPILER_SUPPORTS_AVX512

#define CROARING_COMPILER_SUPPORTS_AVX512 0

#endif  // #ifndef CROARING_COMPILER_SUPPORTS_AVX512

#endif  // #ifndef CROARING_COMPILER_SUPPORTS_AVX512



#ifdef __cplusplus

extern "C" {

namespace roaring {

namespace internal {

#endif

enum {

    ROARING_SUPPORTS_AVX2 = 1,

    ROARING_SUPPORTS_AVX512 = 2,

};

int croaring_hardware_support(void);

#ifdef __cplusplus

}

}

}  // extern "C" { namespace roaring { namespace internal {

#endif

#endif  // x64

#endif  // ROARING_ISADETECTION_H