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#ifndef FMV_H
#if HAVE_FUNC_ATTRIBUTE_IFUNC
#if defined(__has_attribute)
#if __has_attribute(target_clones)
#if defined(__x86_64)
// see https://gcc.gnu.org/wiki/FunctionMultiVersioning
#define PF_TARGET_CLONES __attribute__((target_clones("avx","sse4.2","sse3","sse2","sse","default")))
#define HAVE_PF_TARGET_CLONES 1
#endif
#endif
#endif
#endif
#ifndef PF_TARGET_CLONES
#define PF_TARGET_CLONES
#endif
#endif
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