晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/cloudlinux/venv/lib64/python3.11/site-packages/numpy/distutils/checks/
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Current File : //opt/cloudlinux/venv/lib64/python3.11/site-packages/numpy/distutils/checks/extra_avx512f_reduce.c
#include <immintrin.h>
/**
 * The following intrinsics don't have direct native support but compilers
 * tend to emulate them.
 * They're usually supported by gcc >= 7.1, clang >= 4 and icc >= 19
 */
int main(void)
{
    __m512  one_ps = _mm512_set1_ps(1.0f);
    __m512d one_pd = _mm512_set1_pd(1.0);
    __m512i one_i64 = _mm512_set1_epi64(1);
    // add
    float sum_ps  = _mm512_reduce_add_ps(one_ps);
    double sum_pd = _mm512_reduce_add_pd(one_pd);
    int sum_int   = (int)_mm512_reduce_add_epi64(one_i64);
        sum_int  += (int)_mm512_reduce_add_epi32(one_i64);
    // mul
    sum_ps  += _mm512_reduce_mul_ps(one_ps);
    sum_pd  += _mm512_reduce_mul_pd(one_pd);
    sum_int += (int)_mm512_reduce_mul_epi64(one_i64);
    sum_int += (int)_mm512_reduce_mul_epi32(one_i64);
    // min
    sum_ps  += _mm512_reduce_min_ps(one_ps);
    sum_pd  += _mm512_reduce_min_pd(one_pd);
    sum_int += (int)_mm512_reduce_min_epi32(one_i64);
    sum_int += (int)_mm512_reduce_min_epu32(one_i64);
    sum_int += (int)_mm512_reduce_min_epi64(one_i64);
    // max
    sum_ps  += _mm512_reduce_max_ps(one_ps);
    sum_pd  += _mm512_reduce_max_pd(one_pd);
    sum_int += (int)_mm512_reduce_max_epi32(one_i64);
    sum_int += (int)_mm512_reduce_max_epu32(one_i64);
    sum_int += (int)_mm512_reduce_max_epi64(one_i64);
    // and
    sum_int += (int)_mm512_reduce_and_epi32(one_i64);
    sum_int += (int)_mm512_reduce_and_epi64(one_i64);
    // or
    sum_int += (int)_mm512_reduce_or_epi32(one_i64);
    sum_int += (int)_mm512_reduce_or_epi64(one_i64);
    return (int)sum_ps + (int)sum_pd + sum_int;
}