cpu_f16c.c
1 #if defined(DETECT_FEATURES) && defined(__INTEL_COMPILER) 2 /* 3 * Unlike GCC and CLANG, Intel Compiler exposes all supported intrinsics, 4 * whether or not the build options for those features are specified. 5 * Therefore, we must test #definitions of CPU features when option native/host 6 * is enabled via `--cpu-baseline` or through env var `CFLAGS` otherwise 7 * the test will be broken and leads to enable all possible features. 8 */ 9 #ifndef __F16C__ 10 #error "HOST/ARCH doesn't support F16C" 11 #endif 12 #endif 13 14 #include <emmintrin.h> 15 #include <immintrin.h> 16 17 int main(int argc, char **argv) 18 { 19 __m128 a = _mm_cvtph_ps(_mm_loadu_si128((const __m128i*)argv[argc-1])); 20 __m256 a8 = _mm256_cvtph_ps(_mm_loadu_si128((const __m128i*)argv[argc-2])); 21 return (int)(_mm_cvtss_f32(a) + _mm_cvtss_f32(_mm256_castps256_ps128(a8))); 22 }