{"url":"https://b1u3.hateblo.jp/entry/2021/04/05/005915","title":"__builtin_bswap ","type":"rich","categories":["\u30a8\u30df\u30e5\u30ec\u30fc\u30bf","\u5c0f\u30cd\u30bf"],"author_name":"b1u3","description":"mgba \u8aad\u3093\u3067\u305f\u3089 __builtin_bswap \u3068\u3044\u3046\u30de\u30af\u30ed\u304c\u51fa\u3066\u304d\u305f\u3002 \u3053\u308c\u306f GCC \u306b\u542b\u307e\u308c\u308b\u30d3\u30eb\u30c8\u30a4\u30f3\u95a2\u6570\u3002 gcc.gnu.org \u3053\u308c\u306f\u3001\u30d0\u30a4\u30c8\u3092\u9006\u9806\u306b\u547c\u3073\u51fa\u3059\u95a2\u6570\u3002\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u4e0a\u306e\u30ea\u30c8\u30eb\u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\u306e\u5024\u3092\u30d3\u30c3\u30b0\u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\u3067\u8aad\u307f\u51fa\u3057\u305f\u308a\u3067\u304d\u308b\u3002 \u6b63\u78ba\u306b\u306f\u3001\u5909\u63db\u3059\u308b\u30c7\u30fc\u30bf\u306e\u5927\u304d\u3055\u3092\u8868\u3059 \u6570\u5b57\u306e suffix \u304c\u3064\u304f\u3002 \u7c21\u5358\u306b\u78ba\u8a8d\u3057\u3066\u307f\u308b\u3002 #include <stdio.h> int main() { printf(\"%x\\n\", __builtin_bswap32(0x12345678)); return 0; } \u51fa\u529b % ./a.out 78563412 0x1234\u2026","blog_title":"\u3044\u308d\u3093\u306a\u3053\u3068\u3067\u56db\u82e6Hack\uff08\u4eee\uff09","author_url":"https://blog.hatena.ne.jp/b1u3/","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fb1u3.hateblo.jp%2Fentry%2F2021%2F04%2F05%2F005915\" title=\"__builtin_bswap  - \u3044\u308d\u3093\u306a\u3053\u3068\u3067\u56db\u82e6Hack\uff08\u4eee\uff09\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_name":"Hatena Blog","image_url":null,"published":"2021-04-05 00:59:15","blog_url":"https://b1u3.hateblo.jp/","provider_url":"https://hatena.blog","version":"1.0"}