{"id":7583,"date":"2017-04-23T19:56:50","date_gmt":"2017-04-23T10:56:50","guid":{"rendered":"http:\/\/rentan.org\/blog\/?p=7583"},"modified":"2017-04-23T19:59:16","modified_gmt":"2017-04-23T10:59:16","slug":"dmonkey-loop-unrolling","status":"publish","type":"post","link":"https:\/\/rentan.org\/blog\/2017\/04\/23\/dmonkey-loop-unrolling\/","title":{"rendered":"DMonkey: \u30eb\u30fc\u30d7\u306e\u30a2\u30f3\u30ed\u30fc\u30eb"},"content":{"rendered":"<p>1\u30d0\u30a4\u30c8\u305a\u3064 <code>key [0]<\/code> \uff5e <code>key [7]<\/code> \u3068\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u3092\u53d6\u3063\u3066\u3044\u304f\u30eb\u30fc\u30d7\u3002<\/p>\n<pre class=\"prog_code dmonkey\">\r\n<code>var k0 = key [0];\r\nvar k1 = key [1];\r\nvar k2 = key [2];\r\nvar k3 = key [3];\r\nvar k4 = key [4];\r\nvar k5 = key [5];\r\nvar k6 = key [6];\r\nvar k7 = key [7];\r\n\r\nvar sb = new StringBuffer (http.data);\r\nvar len = sb.length;\r\n\r\nsb.append ('*'.multiply (32));\r\nfor (i = 0; i < len;) {\r\n  sb [i++] = sb.charCodeAt (i) ^ k0;\r\n  sb [i++] = sb.charCodeAt (i) ^ k1;\r\n  sb [i++] = sb.charCodeAt (i) ^ k2;\r\n  sb [i++] = sb.charCodeAt (i) ^ k3;\r\n  sb [i++] = sb.charCodeAt (i) ^ k4;\r\n  sb [i++] = sb.charCodeAt (i) ^ k5;\r\n  sb [i++] = sb.charCodeAt (i) ^ k6;\r\n  sb [i++] = sb.charCodeAt (i) ^ k7;\r\n  sb [i++] = sb.charCodeAt (i) ^ k0;\r\n\/\/ \u4e2d\u7565\r\n  sb [i++] = sb.charCodeAt (i) ^ k7;\r\n  sb [i++] = sb.charCodeAt (i) ^ k0;\r\n  sb [i++] = sb.charCodeAt (i) ^ k1;\r\n  sb [i++] = sb.charCodeAt (i) ^ k2;\r\n  sb [i++] = sb.charCodeAt (i) ^ k3;\r\n  sb [i++] = sb.charCodeAt (i) ^ k4;\r\n  sb [i++] = sb.charCodeAt (i) ^ k5;\r\n  sb [i++] = sb.charCodeAt (i) ^ k6;\r\n  sb [i++] = sb.charCodeAt (i) ^ k7;\r\n}\r\nsb.delete (len);<\/code>\r\n<\/pre>\n<p>\u3053\u3053\u306f19\u4e16\u7d00\u304b\u3002<\/p>\n<p>\u307e\u3063\u305f\u304f\u30eb\u30fc\u30d7\u3092\u5c55\u958b\u3057\u306a\u3044\u5834\u5408\u306b\u6bd4\u3079\u3066\u3001\u3061\u3087\u3063\u3068\u3060\u3051\u901f\u304f\u306a\u308a\u307e\u3059\u3002\u3061\u3087\u3063\u3068\u3060\u3051\u3002<br \/>\n\u307e\u3058\u3081\u306b\u901f\u304f\u3057\u305f\u3044\u306a\u3089\u5916\u90e8\u30d7\u30ed\u30bb\u30b9\u306b\u6295\u3052\u308b\u3079\u304d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u30d0\u30a4\u30c8\u305a\u3064 key [0] \uff5e key [7] \u3068\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u3092\u53d6\u3063\u3066\u3044\u304f\u30eb\u30fc\u30d7\u3002 var k0 = key [0]; var k1 = key [1]; var k2 = key [2]; var k3 = key  [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[640],"tags":[1191],"class_list":["post-7583","post","type-post","status-publish","format-standard","hentry","category-irvine","tag-dmonkey"],"_links":{"self":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/7583","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/comments?post=7583"}],"version-history":[{"count":3,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/7583\/revisions"}],"predecessor-version":[{"id":7586,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/posts\/7583\/revisions\/7586"}],"wp:attachment":[{"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/media?parent=7583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/categories?post=7583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rentan.org\/blog\/wp-json\/wp\/v2\/tags?post=7583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}