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/************************/
int main() {
#if defined(PURE_C)
// glibc
return 0;
#elif defined(VEC128)
#if defined(__aarch64__)
// __ARM_ARCH_ISA_A64
// ARM64 should always have FMA
return 0;
#elif defined(__ARM_NEON)
// TODO proper ARM detection
#error ARM32 FMA detection not implemented
return -1;
#elif defined(__AVX2__) || defined(__FMA4__)
return 0;
#else
#error FMA status unknown
return -1;
#endif
#elif defined(VEC256)
#if defined(__AVX2__) || defined(__FMA4__)
return 0;
#else
#error FMA status unknown
return -1;
#endif
#elif defined(VEC512)
#if defined(__AVX512F__)
return 0;
#else
#error FMA status unknown
return -1;
#endif
#else
#error FMA status unknown
return -1;
#endif
}
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