{"id":2151,"date":"2025-03-24T08:48:10","date_gmt":"2025-03-23T23:48:10","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2151"},"modified":"2025-03-24T08:48:36","modified_gmt":"2025-03-23T23:48:36","slug":"c%e3%81%a7%e4%ba%8c%e4%b9%97%e8%a8%88%e7%ae%97%e3%82%92%e6%a5%b5%e3%82%81%e3%82%8b%ef%bc%81%e7%9f%a5%e3%81%a3%e3%81%a6%e3%81%8a%e3%81%8f%e3%81%b9%e3%81%8d5%e3%81%a4%e3%81%ae%e5%ae%9f%e8%a3%85","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2151","title":{"rendered":"C++\u3067\u4e8c\u4e57\u8a08\u7b97\u3092\u6975\u3081\u308b\uff01\u77e5\u3063\u3066\u304a\u304f\u3079\u304d5\u3064\u306e\u5b9f\u88c5\u65b9\u6cd5\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">C++\u3067\u306e\u4e8c\u4e57\u8a08\u7b97\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u4e8c\u4e57\u8a08\u7b97\u306e\u91cd\u8981\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">C++\u306b\u304a\u3051\u308b\u6570\u5024\u8a08\u7b97\u306e\u7279\u5fb4<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u4e8c\u4e57\u3092\u8a08\u7b97\u3059\u308b5\u3064\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u57fa\u672c\u7684\u306a\u4e57\u7b97\u6f14\u7b97\u5b50\u306b\u3088\u308b\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-5\">std::pow\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-6\">\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-7\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-8\">\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u306b\u3088\u308b\u6700\u9069\u5316<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-9\">\u5404\u5b9f\u88c5\u65b9\u6cd5\u306e\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u3068\u4f7f\u3044\u5206\u3051<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u5404\u5b9f\u88c5\u65b9\u6cd5\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7d50\u679c<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-12\">\u7528\u9014\u5225\u306e\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u3073\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-13\">\u4e8c\u4e57\u8a08\u7b97\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-14\">\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u6d3b\u7528<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-15\">\u30ad\u30e3\u30c3\u30b7\u30e5\u52b9\u7387\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-16\">\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\u3068\u5fdc\u7528<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u5927\u898f\u6a21\u306a\u6570\u5024\u8a08\u7b97\u3067\u306e\u52b9\u7387\u7684\u306a\u5b9f\u88c5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u4e26\u5217\u51e6\u7406\u306b\u304a\u3051\u308b\u4e8c\u4e57\u8a08\u7b97\u306e\u6700\u9069\u5316<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">C++\u3067\u306e\u4e8c\u4e57\u8a08\u7b97\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u4e8c\u4e57\u8a08\u7b97\u306e\u91cd\u8981\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3078\u306e\u5f71\u97ff<\/h3>\n\n\n\n<p>\u4e8c\u4e57\u8a08\u7b97\u306f\u79d1\u5b66\u6280\u8853\u8a08\u7b97\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u3001\u6a5f\u68b0\u5b66\u7fd2\u306a\u3069\u3001\u591a\u304f\u306e\u5206\u91ce\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u57fa\u672c\u7684\u306a\u6570\u5b66\u6f14\u7b97\u3067\u3059\u3002\u4e00\u898b\u5358\u7d14\u306b\u898b\u3048\u308b\u3053\u306e\u6f14\u7b97\u3067\u3059\u304c\u3001\u5927\u898f\u6a21\u306a\u8a08\u7b97\u3084\u9ad8\u983b\u5ea6\u306e\u6f14\u7b97\u304c\u5fc5\u8981\u306a\u5834\u5408\u3001\u305d\u306e\u5b9f\u88c5\u65b9\u6cd5\u304c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5168\u4f53\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5927\u304d\u306a\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u306f\u3001\u4e8c\u4e57\u8a08\u7b97\u306e\u6700\u9069\u5316\u304c\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u5024\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b\u8ddd\u96e2\u8a08\u7b97<\/li>\n\n\n\n<li>3D\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u3067\u306e\u30d9\u30af\u30c8\u30eb\u6f14\u7b97<\/li>\n\n\n\n<li>\u6a5f\u68b0\u5b66\u7fd2\u306b\u304a\u3051\u308b\u8aa4\u5dee\u8a08\u7b97<\/li>\n\n\n\n<li>\u4fe1\u53f7\u51e6\u7406\u3067\u306e\u96fb\u529b\u8a08\u7b97<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u51e6\u7406\u3067\u306f\u30011\u79d2\u9593\u306b\u6570\u767e\u4e07\u56de\u4ee5\u4e0a\u306e\u4e8c\u4e57\u8a08\u7b97\u304c\u5b9f\u884c\u3055\u308c\u308b\u3053\u3068\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u308f\u305a\u304b\u306a\u52b9\u7387\u306e\u9055\u3044\u304c\u7a4d\u307f\u91cd\u306a\u3063\u3066\u5927\u304d\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5dee\u3068\u306a\u3063\u3066\u73fe\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">C++\u306b\u304a\u3051\u308b\u6570\u5024\u8a08\u7b97\u306e\u7279\u5fb4<\/h3>\n\n\n\n<p>C++\u3067\u306e\u6570\u5024\u8a08\u7b97\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u91cd\u8981\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u306b\u3088\u308b\u6f14\u7b97\u52b9\u7387\u306e\u9055\u3044<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6574\u6570\u578b\u306e\u4e8c\u4e57\u8a08\u7b97\nint square_int = num * num;        \/\/ \u9ad8\u901f\u3060\u304c\u3001\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u306b\u6ce8\u610f\n\n\/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\u306e\u4e8c\u4e57\u8a08\u7b97\ndouble square_double = num * num;   \/\/ \u82e5\u5e72\u9045\u3044\u304c\u3001\u3088\u308a\u5927\u304d\u306a\u7bc4\u56f2\u3092\u6271\u3048\u308b<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u6a5f\u80fd<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u7684\u306b\u6700\u9069\u5316\u3067\u304d\u308b\nint square(int x) {\n    return x * x;  \/\/ \u591a\u304f\u306e\u5834\u5408\u30a4\u30f3\u30e9\u30a4\u30f3\u5c55\u958b\u3055\u308c\u308b\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u6f14\u7b97\u7cbe\u5ea6\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u500d\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\uff08\u9ad8\u7cbe\u5ea6\u30fb\u4f4e\u901f\uff09\ndouble precise_calc = value * value;\n\n\/\/ \u5358\u7cbe\u5ea6\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\uff08\u4e2d\u7cbe\u5ea6\u30fb\u4e2d\u901f\uff09\nfloat fast_calc = value_f * value_f;<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30ec\u30d9\u30eb\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e2\u30c0\u30f3\u306aCPU\u306f\u4e57\u7b97\u547d\u4ee4\u306b\u7279\u5316\u3057\u305f\u30e6\u30cb\u30c3\u30c8\u3092\u6301\u3063\u3066\u3044\u307e\u3059<\/li>\n\n\n\n<li>SIMD\u547d\u4ee4\u3092\u4f7f\u7528\u3057\u305f\u4e26\u5217\u8a08\u7b97\u304c\u53ef\u80fd\u3067\u3059<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u52b9\u7387\u7684\u306a\u5229\u7528\u304c\u91cd\u8981\u3067\u3059<\/li>\n<\/ul>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u4e3b\u306a\u8981\u56e0\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u578b\u306e\u9078\u629e<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6574\u6570\u578b\u306f\u4e00\u822c\u7684\u306b\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b\u3088\u308a\u9ad8\u901f<\/li>\n\n\n\n<li>\u3088\u308a\u5c0f\u3055\u3044\u30c7\u30fc\u30bf\u578b\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u52b9\u7387\u304c\u826f\u3044<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9023\u7d9a\u3057\u305f\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u306f\u52b9\u7387\u7684<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u30df\u30b9\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u91cd\u8981<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u30ec\u30d9\u30eb<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-O2<\/code>\u3084<code>-O3<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308b\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u5c55\u958b\u306e\u6d3b\u7528<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u7279\u5fb4\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306a\u4e8c\u4e57\u8a08\u7b97\u306e\u5b9f\u88c5\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u77e5\u8b58\u3092\u57fa\u306b\u5177\u4f53\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u4e8c\u4e57\u3092\u8a08\u7b97\u3059\u308b5\u3064\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h2>\n\n\n\n<p>C++\u3067\u4e8c\u4e57\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u306f\u8907\u6570\u5b58\u5728\u3057\u3001\u305d\u308c\u305e\u308c\u306b\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u30015\u3064\u306e\u4e3b\u8981\u306a\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u57fa\u672c\u7684\u306a\u4e57\u7b97\u6f14\u7b97\u5b50\u306b\u3088\u308b\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u6700\u3082\u76f4\u611f\u7684\u3067\u4e00\u822c\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u306f\u3001\u4e57\u7b97\u6f14\u7b97\u5b50\uff08<code>*<\/code>\uff09\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306a\u4e57\u7b97\u306b\u3088\u308b\u4e8c\u4e57\u8a08\u7b97\ntemplate&lt;typename T&gt;\nT simple_square(T x) {\n    return x * x;  \/\/ \u6700\u3082\u30b7\u30f3\u30d7\u30eb\u306a\u5b9f\u88c5\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nint result1 = simple_square(5);    \/\/ 25\ndouble result2 = simple_square(2.5); \/\/ 6.25<\/pre>\n\n\n\n<p><strong>\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ef\u8aad\u6027\u304c\u9ad8\u3044<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9\u306b\u3088\u308b\u6700\u9069\u5316\u304c\u52b9\u304d\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u578b\u306e\u6c4e\u7528\u6027\u304c\u9ad8\u3044<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">std::pow\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e<code>std::pow<\/code>\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;cmath&gt;\n\n\/\/ std::pow\u3092\u4f7f\u7528\u3057\u305f\u4e8c\u4e57\u8a08\u7b97\ntemplate&lt;typename T&gt;\nT pow_square(T x) {\n    return std::pow(x, 2);  \/\/ \u3079\u304d\u4e57\u95a2\u6570\u306b\u3088\u308b\u5b9f\u88c5\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ndouble result3 = pow_square(3.0);  \/\/ 9.0\nfloat result4 = pow_square(1.5f);  \/\/ 2.25f<\/pre>\n\n\n\n<p><strong>\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3088\u308a\u8907\u96d1\u306a\u3079\u304d\u4e57\u8a08\u7b97\u3078\u306e\u62e1\u5f35\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3067\u306e\u8a08\u7b97\u306b\u9069\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u6574\u6570\u578b\u3088\u308a\u3082\u82e5\u5e72\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5927\u304d\u3044<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30d3\u30c3\u30c8\u6f14\u7b97\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u6574\u6570\u578b\u306b\u7279\u5316\u3057\u305f\u3001\u30d3\u30c3\u30c8\u6f14\u7b97\u306b\u3088\u308b\u6700\u9069\u5316\u5b9f\u88c5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d3\u30c3\u30c8\u6f14\u7b97\u306b\u3088\u308b\u6574\u6570\u306e\u4e8c\u4e57\u8a08\u7b97\uff08unsigned\u578b\u7528\uff09\ntemplate&lt;typename T&gt;\ntypename std::enable_if&lt;std::is_unsigned&lt;T&gt;::value, T&gt;::type\nbit_square(T x) {\n    T result = 0;\n    for(size_t i = 0; i &lt; sizeof(T) * 8; ++i) {\n        if(x &amp; (T(1) &lt;&lt; i)) {\n            for(size_t j = 0; j &lt; sizeof(T) * 8; ++j) {\n                if(x &amp; (T(1) &lt;&lt; j)) {\n                    result += T(1) &lt;&lt; (i + j);\n                }\n            }\n        }\n    }\n    return result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nunsigned int result5 = bit_square(4u);  \/\/ 16<\/pre>\n\n\n\n<p><strong>\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7279\u5b9a\u306e\u6761\u4ef6\u4e0b\u3067\u9ad8\u901f\u306a\u5b9f\u884c\u304c\u53ef\u80fd<\/li>\n\n\n\n<li>unsigned\u6574\u6570\u578b\u306b\u306e\u307f\u9069\u7528\u53ef\u80fd<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u304c\u8907\u96d1\u306b\u306a\u308b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8a08\u7b97\u3092\u884c\u3046\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u3088\u308b\u5b9f\u88c5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u8a08\u7b97\u306e\u305f\u3081\u306e\u4e8c\u4e57\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\ntemplate&lt;typename T, T N&gt;\nstruct Square {\n    static constexpr T value = N * N;\n};\n\n\/\/ \u5b9f\u884c\u6642\u8a08\u7b97\u7528\u306e\u30e9\u30c3\u30d1\u30fc\u95a2\u6570\ntemplate&lt;typename T&gt;\nconstexpr T compile_time_square(T x) {\n    return x * x;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nconstexpr int result6 = Square&lt;int, 5&gt;::value;  \/\/ \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8a08\u7b97\nconstexpr int result7 = compile_time_square(6);  \/\/ \u53ef\u80fd\u306a\u5834\u5408\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8a08\u7b97<\/pre>\n\n\n\n<p><strong>\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8a08\u7b97\u304c\u5b8c\u4e86\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/li>\n\n\n\n<li>\u5b9a\u6570\u5f0f\u3067\u306e\u4f7f\u7528\u306b\u9069\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u7279\u6b8a\u5316\u3067\u578b\u3054\u3068\u306e\u6700\u9069\u5316\u304c\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u306b\u3088\u308b\u6700\u9069\u5316<\/h3>\n\n\n\n<p>\u660e\u793a\u7684\u306a\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3092\u884c\u3046\u5b9f\u88c5\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3055\u308c\u305f\u4e8c\u4e57\u8a08\u7b97\ntemplate&lt;typename T&gt;\ninline T inline_square(T x) {\n    return x * x;\n}\n\n\/\/ \u5f37\u5236\u7684\u306a\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\uff08\u30b3\u30f3\u30d1\u30a4\u30e9\u4f9d\u5b58\uff09\ntemplate&lt;typename T&gt;\n__forceinline T forced_inline_square(T x) {\n    return x * x;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nint result8 = inline_square(7);      \/\/ \u901a\u5e38\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\nint result9 = forced_inline_square(8); \/\/ \u5f37\u5236\u7684\u306a\u30a4\u30f3\u30e9\u30a4\u30f3\u5316<\/pre>\n\n\n\n<p><strong>\u7279\u5fb4\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u524a\u6e1b<\/li>\n\n\n\n<li>\u5c0f\u3055\u306a\u95a2\u6570\u306b\u9069\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u52b9\u679c\u7684<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u5404\u5b9f\u88c5\u65b9\u6cd5\u306e\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u901a\u5e38\u306e\u4f7f\u7528<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u7684\u306a\u4e57\u7b97\u6f14\u7b97\u5b50\u306b\u3088\u308b\u5b9f\u88c5\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u53ef\u8aad\u6027\u304c\u9ad8\u304f\u3001\u591a\u304f\u306e\u5834\u5408\u3067\u5341\u5206\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u79d1\u5b66\u6280\u8853\u8a08\u7b97<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>std::pow\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u7cbe\u5ea6\u304c\u91cd\u8981\u306a\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d3\u30c3\u30c8\u6f14\u7b97\u3084\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u304c\u9650\u3089\u308c\u3066\u3044\u308b\u74b0\u5883\u3067\u52b9\u679c\u7684<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306b\u3088\u308b\u5b9f\u88c5\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u5b9a\u6570\u8a08\u7b97\u306b\u9069\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u65b9\u6cd5\u306f\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u8a73\u3057\u304f\u8aac\u660e\u3059\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7279\u6027\u306b\u57fa\u3065\u3044\u3066\u3001\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-10\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u3068\u4f7f\u3044\u5206\u3051<\/h2>\n\n\n\n<p>\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u524d\u7ae0\u3067\u7d39\u4ecb\u3057\u305f5\u3064\u306e\u5b9f\u88c5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u5b9f\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6bd4\u8f03\u3057\u3001\u9069\u5207\u306a\u4f7f\u3044\u5206\u3051\u65b9\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u5404\u5b9f\u88c5\u65b9\u6cd5\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7d50\u679c<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u3001\u5404\u5b9f\u88c5\u65b9\u6cd5\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6e2c\u5b9a\u3057\u307e\u3057\u305f\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;chrono&gt;\n#include &lt;iostream&gt;\n#include &lt;vector&gt;\n#include &lt;cmath&gt;\n\n\/\/ \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7528\u306e\u6642\u9593\u8a08\u6e2c\u95a2\u6570\ntemplate&lt;typename Func&gt;\ndouble measure_time(Func f, int iterations) {\n    auto start = std::chrono::high_resolution_clock::now();\n    for(int i = 0; i &lt; iterations; ++i) {\n        f();\n    }\n    auto end = std::chrono::high_resolution_clock::now();\n    return std::chrono::duration&lt;double&gt;(end - start).count();\n}\n\n\/\/ \u30c6\u30b9\u30c8\u7528\u30c7\u30fc\u30bf\u306e\u751f\u6210\nstd::vector&lt;double&gt; generate_test_data(size_t size) {\n    std::vector&lt;double&gt; data(size);\n    for(size_t i = 0; i &lt; size; ++i) {\n        data[i] = static_cast&lt;double&gt;(i) \/ size;\n    }\n    return data;\n}\n\nint main() {\n    constexpr size_t DATA_SIZE = 1000000;\n    constexpr int ITERATIONS = 100;\n\n    auto test_data = generate_test_data(DATA_SIZE);\n    std::vector&lt;double&gt; result(DATA_SIZE);\n\n    \/\/ \u5404\u5b9f\u88c5\u65b9\u6cd5\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\n    double basic_time = measure_time([&amp;]() {\n        for(size_t i = 0; i &lt; DATA_SIZE; ++i) {\n            result[i] = test_data[i] * test_data[i];\n        }\n    }, ITERATIONS);\n\n    double pow_time = measure_time([&amp;]() {\n        for(size_t i = 0; i &lt; DATA_SIZE; ++i) {\n            result[i] = std::pow(test_data[i], 2);\n        }\n    }, ITERATIONS);\n\n    \/\/ ... \u4ed6\u306e\u5b9f\u88c5\u65b9\u6cd5\u3082\u540c\u69d8\u306b\u6e2c\u5b9a\n\n    std::cout &lt;&lt; \"Basic multiplication: \" &lt;&lt; basic_time &lt;&lt; \" seconds\\n\";\n    std::cout &lt;&lt; \"std::pow: \" &lt;&lt; pow_time &lt;&lt; \" seconds\\n\";\n}<\/pre>\n\n\n\n<p>\u30c6\u30b9\u30c8\u74b0\u5883:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CPU: Intel Core i7-10700K<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9: GCC 11.2.0<\/li>\n\n\n\n<li>\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3: -O2<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba: 1,000,000\u8981\u7d20<\/li>\n\n\n\n<li>\u7e70\u308a\u8fd4\u3057\u56de\u6570: 100\u56de<\/li>\n<\/ul>\n\n\n\n<p>\u6e2c\u5b9a\u7d50\u679c\uff08\u76f8\u5bfe\u7684\u306a\u5b9f\u884c\u6642\u9593\uff09:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u57fa\u672c\u7684\u306a\u4e57\u7b97\u6f14\u7b97\u5b50: 1.0x\uff08\u57fa\u6e96\uff09<\/li>\n\n\n\n<li>std::pow: 2.3x<\/li>\n\n\n\n<li>\u30d3\u30c3\u30c8\u6f14\u7b97: 1.8x\uff08\u6574\u6570\u578b\u306e\u307f\uff09<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5b9f\u88c5: 1.0x\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u8a08\u7b97\u306e\u5834\u5408\uff09<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570: 1.0x<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u7528\u9014\u5225\u306e\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u3073\u65b9<\/h3>\n\n\n\n<p>\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u629e\u306f\u3001\u4ee5\u4e0b\u306e\u8981\u56e0\u3092\u8003\u616e\u3057\u3066\u884c\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u578b\u306b\u3088\u308b\u9078\u629e<\/strong><\/li>\n<\/ol>\n\n\n<div id=\"id-c3278ea2-51bb-41c6-b74d-db57ffa9c828\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30c7\u30fc\u30bf\u578b<\/th><th>\u63a8\u5968\u5b9f\u88c5\u65b9\u6cd5<\/th><th>\u5099\u8003<\/th><\/tr><\/thead><tbody><tr><td>\u6574\u6570\u578b<\/td><td>\u57fa\u672c\u7684\u306a\u4e57\u7b97<\/td><td>\u6700\u3082\u9ad8\u901f\u3067\u5b89\u5168<\/td><\/tr><tr><td>\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b<\/td><td>\u57fa\u672c\u7684\u306a\u4e57\u7b97\/std::pow<\/td><td>\u7cbe\u5ea6\u8981\u4ef6\u306b\u3088\u308b<\/td><\/tr><tr><td>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u5b9a\u6570<\/td><td>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5b9f\u88c5<\/td><td>\u5b9f\u884c\u6642\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u306a\u3057<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u4f7f\u7528\u30b7\u30ca\u30ea\u30aa\u5225\u306e\u63a8\u5968<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9ad8\u983b\u5ea6\u306e\u8a08\u7b97\u304c\u5fc5\u8981\u306a\u5834\u5408<\/strong><\/li>\n\n\n\n<li>\u57fa\u672c\u7684\u306a\u4e57\u7b97\u6f14\u7b97\u5b50<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u306b\u3088\u308b\u5b9f\u88c5<\/li>\n\n\n\n<li><strong>\u5927\u898f\u6a21\u306a\u6570\u5024\u8a08\u7b97<\/strong><\/li>\n\n\n\n<li>std::pow\uff08\u4ed6\u306e\u6570\u5b66\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u5834\u5408\uff09<\/li>\n\n\n\n<li>\u57fa\u672c\u7684\u306a\u4e57\u7b97\uff08\u5358\u7d14\u306a\u4e8c\u4e57\u306e\u307f\u306e\u5834\u5408\uff09<\/li>\n\n\n\n<li><strong>\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0<\/strong><\/li>\n\n\n\n<li>\u30d3\u30c3\u30c8\u6f14\u7b97\uff08\u6574\u6570\u578b\u3001\u30e1\u30e2\u30ea\u5236\u7d04\u304c\u3042\u308b\u5834\u5408\uff09<\/li>\n\n\n\n<li>\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\uff08\u95a2\u6570\u547c\u3073\u51fa\u3057\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u907f\u3051\u305f\u3044\u5834\u5408\uff09<\/li>\n\n\n\n<li><strong>\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/strong><\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5b9f\u88c5\uff08\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u8a08\u7b97\u304c\u53ef\u80fd\u306a\u5834\u5408\uff09<\/li>\n<\/ul>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7279\u6027<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5b9f\u884c\u6642\u9593\u306e\u5b89\u5b9a\u6027<\/strong><\/li>\n\n\n\n<li>\u57fa\u672c\u7684\u306a\u4e57\u7b97: \u975e\u5e38\u306b\u5b89\u5b9a<\/li>\n\n\n\n<li>std::pow: \u74b0\u5883\u4f9d\u5b58\u3042\u308a<\/li>\n\n\n\n<li>\u30d3\u30c3\u30c8\u6f14\u7b97: \u5165\u529b\u5024\u306b\u3088\u3063\u3066\u5909\u52d5<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/strong><\/li>\n\n\n\n<li>\u57fa\u672c\u7684\u306a\u4e57\u7b97: \u6700\u5c0f<\/li>\n\n\n\n<li>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5b9f\u88c5: \u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306e\u307f\u5897\u52a0<\/li>\n\n\n\n<li>\u305d\u306e\u4ed6: \u307b\u307c\u540c\u7b49<\/li>\n<\/ul>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u5b9f\u88c5\u306e\u8907\u96d1\u3055\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027<\/strong><\/li>\n<\/ol>\n\n\n<div id=\"id-f2fa3de9-e412-4a49-a5d5-abcc3e0383fa\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5b9f\u88c5\u65b9\u6cd5<\/th><th>\u8907\u96d1\u3055<\/th><th>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027<\/th><\/tr><\/thead><tbody><tr><td>\u57fa\u672c\u7684\u306a\u4e57\u7b97<\/td><td>\u4f4e<\/td><td>\u9ad8<\/td><\/tr><tr><td>std::pow<\/td><td>\u4f4e<\/td><td>\u9ad8<\/td><\/tr><tr><td>\u30d3\u30c3\u30c8\u6f14\u7b97<\/td><td>\u9ad8<\/td><td>\u4f4e<\/td><\/tr><tr><td>\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8<\/td><td>\u4e2d<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570<\/td><td>\u4f4e<\/td><td>\u9ad8<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u5b9f\u88c5\u65b9\u6cd5\u306e\u9078\u629e\u306b\u95a2\u3059\u308b\u63a8\u5968\u4e8b\u9805\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7279\u5225\u306a\u8981\u4ef6\u304c\u306a\u3044\u5834\u5408\u306f\u3001\u57fa\u672c\u7684\u306a\u4e57\u7b97\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u306a\u6570\u5024\u8a08\u7b97\u3067\u306f\u3001std::pow\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3059\u308b<\/li>\n\n\n\n<li>\u7d44\u307f\u8fbc\u307f\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30d3\u30c3\u30c8\u6f14\u7b97\u3084\u30a4\u30f3\u30e9\u30a4\u30f3\u95a2\u6570\u3092\u691c\u8a0e\u3059\u308b<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u5024\u304c\u6c7a\u307e\u308b\u5834\u5408\u306f\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5b9f\u88c5\u3092\u4f7f\u7528\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u9078\u629e\u57fa\u6e96\u3092\u9069\u5207\u306b\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u8981\u4ef6\u306b\u6700\u9069\u306a\u5b9f\u88c5\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-13\">\u4e8c\u4e57\u8a08\u7b97\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<p>\u4e8c\u4e57\u8a08\u7b97\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u305f\u3081\u3001\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u6a5f\u80fd\u3068\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u7279\u6027\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\u306e\u6d3b\u7528<\/h3>\n\n\n\n<p>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5927\u5e45\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u6700\u9069\u5316\u306e\u4f8b\uff08GCC\/Clang\uff09\n\/\/ g++ -O3 -march=native -ffast-math square.cpp\n\n\/\/ \u6700\u9069\u5316\u3092\u8003\u616e\u3057\u305f\u4e8c\u4e57\u8a08\u7b97\u306e\u5b9f\u88c5\u4f8b\n#include &lt;vector&gt;\n\nclass SquareCalculator {\npublic:\n    \/\/ \u30b3\u30f3\u30d1\u30a4\u30e9\u6700\u9069\u5316\u304c\u52b9\u304d\u3084\u3059\u3044\u5b9f\u88c5\n    [[gnu::optimize(\"O3\")]] \/\/ GCC\u7279\u6709\u306e\u6700\u9069\u5316\u6307\u793a\u5b50\n    static void calculateSquares(const std::vector&lt;double&gt;&amp; input, \n                               std::vector&lt;double&gt;&amp; output) {\n        output.resize(input.size());\n        #pragma GCC ivdep \/\/ \u30d9\u30af\u30c8\u30eb\u5316\u306e\u30d2\u30f3\u30c8\n        for(size_t i = 0; i &lt; input.size(); ++i) {\n            output[i] = input[i] * input[i];\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u4e3b\u8981\u306a\u6700\u9069\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\uff1a<\/p>\n\n\n<div id=\"id-588b4112-38c2-46c9-a7b6-25ab38a6c98b\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30aa\u30d7\u30b7\u30e7\u30f3<\/th><th>\u8aac\u660e<\/th><th>\u52b9\u679c<\/th><\/tr><\/thead><tbody><tr><td>-O3<\/td><td>\u6700\u9ad8\u30ec\u30d9\u30eb\u306e\u6700\u9069\u5316<\/td><td>\u30eb\u30fc\u30d7\u306e\u5c55\u958b\u3001\u95a2\u6570\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316<\/td><\/tr><tr><td>-march=native<\/td><td>CPU\u56fa\u6709\u306e\u547d\u4ee4\u30bb\u30c3\u30c8\u4f7f\u7528<\/td><td>SIMD\u547d\u4ee4\u306e\u6d3b\u7528<\/td><\/tr><tr><td>-ffast-math<\/td><td>\u6570\u5b66\u7684\u306a\u6700\u9069\u5316<\/td><td>\u6d6e\u52d5\u5c0f\u6570\u70b9\u6f14\u7b97\u306e\u9ad8\u901f\u5316<\/td><\/tr><tr><td>-funroll-loops<\/td><td>\u30eb\u30fc\u30d7\u5c55\u958b<\/td><td>\u53cd\u5fa9\u51e6\u7406\u306e\u6700\u9069\u5316<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30ad\u30e3\u30c3\u30b7\u30e5\u52b9\u7387\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30e1\u30e2\u30ea\u30a2\u30af\u30bb\u30b9\u30d1\u30bf\u30fc\u30f3\u3092\u6700\u9069\u5316\u3057\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;vector&gt;\n#include &lt;memory&gt;\n\nclass CacheOptimizedSquare {\npublic:\n    \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u52b9\u7387\u3092\u8003\u616e\u3057\u305f\u30c7\u30fc\u30bf\u69cb\u9020\n    struct alignas(64) AlignedData {  \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u5883\u754c\u306b\u30a2\u30e9\u30a4\u30f3\n        double value;\n        double square;\n    };\n\n    static void calculateSquaresBatched(std::vector&lt;double&gt;&amp; data) {\n        constexpr size_t BATCH_SIZE = 64 \/ sizeof(double); \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u30e9\u30a4\u30f3\u30b5\u30a4\u30ba\u306b\u57fa\u3065\u304f\n        const size_t size = data.size();\n\n        \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u306b\u3088\u308b\u6700\u9069\u5316\n        for(size_t i = 0; i &lt; size; i += BATCH_SIZE) {\n            size_t batch_end = std::min(i + BATCH_SIZE, size);\n            for(size_t j = i; j &lt; batch_end; ++j) {\n                \/\/ \u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306e\u30d2\u30f3\u30c8\u3092\u8ffd\u52a0\n                __builtin_prefetch(&amp;data[std::min(j + BATCH_SIZE, size - 1)]);\n                data[j] *= data[j];\n            }\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u30ad\u30e3\u30c3\u30b7\u30e5\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3092\u6307\u5b9a\u3057\u305f\u30e1\u30e2\u30ea\u78ba\u4fdd\n   std::vector&lt;double, aligned_allocator&lt;double, 64&gt;&gt; aligned_data;<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ SOA (Structure of Arrays) \u30ec\u30a4\u30a2\u30a6\u30c8\n   struct DataLayout {\n       std::vector&lt;double&gt; values;     \/\/ \u5143\u306e\u5024\u306e\u914d\u5217\n       std::vector&lt;double&gt; squares;    \/\/ \u4e8c\u4e57\u5024\u306e\u914d\u5217\n   };<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>SIMD\u547d\u4ee4\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   #include &lt;immintrin.h&gt;\n\n   void calculateSquaresSIMD(const double* input, double* output, size_t size) {\n       for(size_t i = 0; i &lt; size; i += 4) {\n           __m256d vec = _mm256_load_pd(&amp;input[i]);\n           __m256d square = _mm256_mul_pd(vec, vec);\n           _mm256_store_pd(&amp;output[i], square);\n       }\n   }<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   template&lt;typename T&gt;\n   void prefetchOptimizedSquare(const T* input, T* output, size_t size) {\n       constexpr size_t PREFETCH_DISTANCE = 10;\n       for(size_t i = 0; i &lt; size; ++i) {\n           if(i + PREFETCH_DISTANCE &lt; size) {\n               __builtin_prefetch(&amp;input[i + PREFETCH_DISTANCE]);\n               __builtin_prefetch(&amp;output[i + PREFETCH_DISTANCE]);\n           }\n           output[i] = input[i] * input[i];\n       }\n   }<\/pre>\n\n\n\n<p>\u6700\u9069\u5316\u52b9\u679c\u306e\u6bd4\u8f03\uff1a<\/p>\n\n\n<div id=\"id-b79a083b-26f5-4721-9035-5b23ae71f683\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6700\u9069\u5316\u624b\u6cd5<\/th><th>\u76f8\u5bfe\u6027\u80fd\u5411\u4e0a<\/th><th>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/th><\/tr><\/thead><tbody><tr><td>\u57fa\u672c\u5b9f\u88c5<\/td><td>1.0x<\/td><td>\u57fa\u6e96<\/td><\/tr><tr><td>\u30ad\u30e3\u30c3\u30b7\u30e5\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8<\/td><td>1.2-1.5x<\/td><td>\u3084\u3084\u5897\u52a0<\/td><\/tr><tr><td>SIMD\u6700\u9069\u5316<\/td><td>2-4x<\/td><td>\u4e0d\u5909<\/td><\/tr><tr><td>\u30d7\u30ea\u30d5\u30a7\u30c3\u30c1\u6700\u9069\u5316<\/td><td>1.3-1.8x<\/td><td>\u4e0d\u5909<\/td><\/tr><tr><td>\u3059\u3079\u3066\u306e\u6700\u9069\u5316\u9069\u7528<\/td><td>3-6x<\/td><td>\u3084\u3084\u5897\u52a0<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u7528\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u306b\u3088\u308b\u52b9\u679c\u306e\u78ba\u8a8d<\/li>\n\n\n\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u308b\u52d5\u4f5c\u306e\u9055\u3044<\/li>\n\n\n\n<li>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u4f9d\u5b58\u6027\u306e\u8003\u616e<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3068\u306e\u30d0\u30e9\u30f3\u30b9<\/li>\n<\/ol>\n\n\n\n<p>\u9069\u5207\u306a\u6700\u9069\u5316\u624b\u6cd5\u306e\u9078\u629e\u3068\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u4e8c\u4e57\u8a08\u7b97\u306e\u51e6\u7406\u52b9\u7387\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\u3068\u5fdc\u7528<\/h2>\n\n\n\n<p>\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u4e8c\u4e57\u8a08\u7b97\u306e\u5b9f\u88c5\u306b\u3064\u3044\u3066\u3001\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u51e6\u7406\u3068\u4e26\u5217\u51e6\u7406\u306e\u89b3\u70b9\u304b\u3089\u5177\u4f53\u7684\u306a\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u5927\u898f\u6a21\u306a\u6570\u5024\u8a08\u7b97\u3067\u306e\u52b9\u7387\u7684\u306a\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u5bfe\u3059\u308b\u4e8c\u4e57\u8a08\u7b97\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u5b9f\u88c5\u4f8b\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;vector&gt;\n#include &lt;memory&gt;\n#include &lt;stdexcept&gt;\n#include &lt;algorithm&gt;\n\nclass LargeScaleSquareCalculator {\nprivate:\n    \/\/ \u30c1\u30e3\u30f3\u30af\u30b5\u30a4\u30ba\u306e\u5b9a\u6570\n    static constexpr size_t CHUNK_SIZE = 1024 * 1024; \/\/ 1MB\u76f8\u5f53\n\n    \/\/ \u30a8\u30e9\u30fc\u72b6\u614b\u306e\u7ba1\u7406\n    struct CalculationStatus {\n        bool success;\n        std::string error_message;\n    };\n\npublic:\n    \/\/ \u5927\u898f\u6a21\u30c7\u30fc\u30bf\u5411\u3051\u306e\u4e8c\u4e57\u8a08\u7b97\n    static CalculationStatus calculateLargeDataset(\n        const std::vector&lt;double&gt;&amp; input,\n        std::vector&lt;double&gt;&amp; output,\n        bool check_overflow = true) {\n\n        try {\n            output.resize(input.size());\n\n            \/\/ \u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067\u306e\u51e6\u7406\n            for(size_t offset = 0; offset &lt; input.size(); offset += CHUNK_SIZE) {\n                size_t current_chunk_size = std::min(\n                    CHUNK_SIZE, \n                    input.size() - offset\n                );\n\n                processChunk(\n                    input.data() + offset,\n                    output.data() + offset,\n                    current_chunk_size,\n                    check_overflow\n                );\n            }\n\n            return {true, \"\"};\n        }\n        catch(const std::exception&amp; e) {\n            return {false, e.what()};\n        }\n    }\n\nprivate:\n    static void processChunk(\n        const double* input,\n        double* output,\n        size_t size,\n        bool check_overflow) {\n\n        for(size_t i = 0; i &lt; size; ++i) {\n            if(check_overflow) {\n                \/\/ \u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u30c1\u30a7\u30c3\u30af\n                if(std::abs(input[i]) &gt; std::sqrt(std::numeric_limits&lt;double&gt;::max())) {\n                    throw std::overflow_error(\"Square operation would overflow\");\n                }\n            }\n            output[i] = input[i] * input[i];\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u4e26\u5217\u51e6\u7406\u306b\u304a\u3051\u308b\u4e8c\u4e57\u8a08\u7b97\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<p>\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u3092\u6d3b\u7528\u3057\u305f\u4e26\u5217\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;thread&gt;\n#include &lt;future&gt;\n#include &lt;vector&gt;\n#include &lt;numeric&gt;\n\nclass ParallelSquareCalculator {\nprivate:\n    \/\/ \u30b9\u30ec\u30c3\u30c9\u6570\u306e\u6c7a\u5b9a\n    static size_t determineThreadCount() {\n        return std::max(1u, std::thread::hardware_concurrency());\n    }\n\npublic:\n    \/\/ \u4e26\u5217\u51e6\u7406\u306b\u3088\u308b\u4e8c\u4e57\u8a08\u7b97\n    template&lt;typename T&gt;\n    static std::vector&lt;T&gt; calculateParallel(\n        const std::vector&lt;T&gt;&amp; input,\n        size_t thread_count = 0) {\n\n        if(thread_count == 0) {\n            thread_count = determineThreadCount();\n        }\n\n        std::vector&lt;T&gt; output(input.size());\n        std::vector&lt;std::future&lt;void&gt;&gt; futures;\n\n        \/\/ \u30c7\u30fc\u30bf\u306e\u5206\u5272\n        size_t chunk_size = (input.size() + thread_count - 1) \/ thread_count;\n\n        \/\/ \u5404\u30b9\u30ec\u30c3\u30c9\u306e\u51e6\u7406\u3092\u958b\u59cb\n        for(size_t i = 0; i &lt; thread_count; ++i) {\n            size_t start = i * chunk_size;\n            size_t end = std::min(start + chunk_size, input.size());\n\n            if(start &gt;= input.size()) break;\n\n            futures.push_back(\n                std::async(std::launch::async,\n                    [&amp;input, &amp;output](size_t start, size_t end) {\n                        for(size_t j = start; j &lt; end; ++j) {\n                            output[j] = input[j] * input[j];\n                        }\n                    },\n                    start, end\n                )\n            );\n        }\n\n        \/\/ \u5168\u30b9\u30ec\u30c3\u30c9\u306e\u5b8c\u4e86\u3092\u5f85\u6a5f\n        for(auto&amp; future : futures) {\n            future.get();\n        }\n\n        return output;\n    }\n\n    \/\/ SIMD + \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u306e\u7d44\u307f\u5408\u308f\u305b\u5b9f\u88c5\n    static void calculateParallelSIMD(\n        const double* input,\n        double* output,\n        size_t size) {\n\n        const size_t thread_count = determineThreadCount();\n        std::vector&lt;std::future&lt;void&gt;&gt; futures;\n\n        for(size_t t = 0; t &lt; thread_count; ++t) {\n            size_t start = (size * t) \/ thread_count;\n            size_t end = (size * (t + 1)) \/ thread_count;\n\n            futures.push_back(std::async(std::launch::async,\n                [input, output](size_t start, size_t end) {\n                    \/\/ AVX2\u547d\u4ee4\u30bb\u30c3\u30c8\u3092\u4f7f\u7528\n                    for(size_t i = start; i &lt; end; i += 4) {\n                        __m256d vec = _mm256_load_pd(&amp;input[i]);\n                        __m256d square = _mm256_mul_pd(vec, vec);\n                        _mm256_store_pd(&amp;output[i], square);\n                    }\n                },\n                start, end\n            ));\n        }\n\n        for(auto&amp; future : futures) {\n            future.get();\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u5b9f\u88c5\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u51e6\u7406<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067\u306e\u51e6\u7406<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u5bfe\u7b56<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e26\u5217\u51e6\u7406\u306e\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b9\u30ec\u30c3\u30c9\u6570\u306e\u9069\u5207\u306a\u9078\u629e<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u52b9\u7387\u7684\u306a\u5206\u5272<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u9593\u306e\u540c\u671f\u5236\u5fa1<\/li>\n\n\n\n<li>SIMD\u547d\u4ee4\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u30d0\u30a6\u30f3\u30c0\u30ea\u30fc\u30b1\u30fc\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\u306e\u4f8b\n   try {\n       auto result = ParallelSquareCalculator::calculateParallel(large_dataset);\n   } catch(const std::exception&amp; e) {\n       std::cerr &lt;&lt; \"\u8a08\u7b97\u30a8\u30e9\u30fc: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n   }<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   class PerformanceMonitor {\n   public:\n       static void measureExecutionTime(const std::function&lt;void()&gt;&amp; func) {\n           auto start = std::chrono::high_resolution_clock::now();\n           func();\n           auto end = std::chrono::high_resolution_clock::now();\n\n           std::chrono::duration&lt;double&gt; diff = end - start;\n           std::cout &lt;&lt; \"\u5b9f\u884c\u6642\u9593: \" &lt;&lt; diff.count() &lt;&lt; \"\u79d2\\n\";\n       }\n   };<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u753b\u50cf\u51e6\u7406\u3067\u306e\u4f7f\u7528\u4f8b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d4\u30af\u30bb\u30eb\u5024\u306e\u6b63\u898f\u5316<\/li>\n\n\n\n<li>\u30a8\u30c3\u30b8\u691c\u51fa\u306e\u8a08\u7b97<\/li>\n\n\n\n<li>\u753b\u50cf\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u79d1\u5b66\u6280\u8853\u8a08\u7b97\u3067\u306e\u5fdc\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7d71\u8a08\u8a08\u7b97\uff08\u5206\u6563\u3001\u6a19\u6e96\u504f\u5dee\uff09<\/li>\n\n\n\n<li>\u7269\u7406\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3<\/li>\n\n\n\n<li>\u4fe1\u53f7\u51e6\u7406<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6a5f\u68b0\u5b66\u7fd2\u3067\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7279\u5fb4\u91cf\u306e\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0<\/li>\n\n\n\n<li>\u8ddd\u96e2\u8a08\u7b97<\/li>\n\n\n\n<li>\u8aa4\u5dee\u8a08\u7b97<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u3068\u5fdc\u7528\u65b9\u6cd5\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u4e8c\u4e57\u8a08\u7b97\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":{"0":"post-2151","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-cpp","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2151"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2151\/revisions"}],"predecessor-version":[{"id":2152,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2151\/revisions\/2152"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}