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Use getauxval to check for NEON on Linux. #32

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Use getauxval to check for NEON on Linux. #32

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11 changes: 9 additions & 2 deletions FastNoiseSIMD/FastNoiseSIMD.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -66,7 +66,10 @@
#ifdef _WIN32
#include <intrin.h>
#elif defined(FN_ARM)
#if !defined(__aarch64__) && !defined(FN_IOS)
#if !defined(__ANDROID__) && (defined(__linux__) || defined(linux) || defined(__LINUX__) || defined(__linux))
#include <sys/auxv.h>
#include <asm/hwcap.h>
#elif !defined(__aarch64__) && !defined(FN_IOS)
#include "ARM/cpu-features.h"
#endif
#else
Expand All @@ -81,6 +84,10 @@ int GetFastestSIMD()
{
#if defined(__aarch64__) || defined(FN_IOS)
return FN_NEON;
#elif !defined(__ANDROID__) && (defined(__linux__) || defined(linux) || defined(__LINUX__) || defined(__linux))
if ((getauxval(AT_HWCAP) & HWCAP_NEON) != 0) {
return FN_NEON;
}
#else
if (android_getCpuFamily() == ANDROID_CPU_FAMILY_ARM)
{
Expand All @@ -92,9 +99,9 @@ int GetFastestSIMD()
#endif
return FN_NEON;
}
#endif

return FN_NO_SIMD_FALLBACK;
#endif
}
#else

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