33 lines
825 B
C++
33 lines
825 B
C++
#include <stdio.h>
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#if defined __F16C__ || (defined _MSC_VER && _MSC_VER >= 1700 && defined __AVX__) || (defined __INTEL_COMPILER && defined __AVX__)
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#include <immintrin.h>
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int test()
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{
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const float src[] = { 0.0f, 0.0f, 0.0f, 0.0f };
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short dst[8];
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__m128 v_src = _mm_load_ps(src);
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__m128i v_dst = _mm_cvtps_ph(v_src, 0);
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_mm_storel_epi64((__m128i*)dst, v_dst);
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return (int)dst[0];
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}
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#elif defined __GNUC__ && (defined __arm__ || defined __aarch64__)
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#include "arm_neon.h"
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int test()
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{
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const float src[] = { 0.0f, 0.0f, 0.0f, 0.0f };
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short dst[8];
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float32x4_t v_src = *(float32x4_t*)src;
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float16x4_t v_dst = vcvt_f16_f32(v_src);
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*(float16x4_t*)dst = v_dst;
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return (int)dst[0];
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}
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#else
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#error "FP16 is not supported"
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#endif
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int main()
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{
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printf("%d\n", test());
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return 0;
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}
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