[B! c99] moozã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

mooz id:mooz

c99ã«é–¢ã™ã‚‹moozã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (8)

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restrictã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ - yohhoyã®æ—¥è¨˜
C99ã§è¿½åŠ ã•ã‚ŒãŸ restrict ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã«ã¤ã„ã¦ã®ãƒ¡ãƒ¢ã€‚ ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã«å¯¾ã—ã¦ã€ŒaliasãŒå˜åœ¨ã—ãªã„ã¨ä»®å®šã—ãŸæœ€é©åŒ–ã‚’è¨±ã™ã€ã¨ä¼ãˆã‚‹ãŸã‚ã®ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã€‚C99ä»¥é™ã§ã®ã¿æœ‰åŠ¹ãªã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã§ã‚ã‚Šã€C++11ç¾åœ¨ã§ã‚‚C++ã«ã¯åŒã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ãŒå˜åœ¨ã—ãªã„ã€‚ï¼ˆãŸã ã—ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®ç‹¬è‡ªæ‹¡å¼µã¨ã—ã¦ã€C++è¨€èªžã§ã‚‚restirctã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã‚’ä½¿ãˆã‚‹ã‚±ãƒ¼ã‚¹ã¯ã‚ã‚‹ã€‚ï¼‰ è¦ç´„ï¼š æ§‹æ–‡çš„ã«ã¯constã‚„volatileã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã¨åŒåˆ—ã§ã€ãƒã‚¤ãƒ³ã‚¿åž‹ã«å¯¾ã—ã¦ã®ã¿åž‹ä¿®é£¾ã‚’è¡Œãˆã‚‹ã€‚int * restrictãªã©ã€‚restrict intã‚„int restrict *ã¯ill-formed*1ã€‚ ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã§ã®æœ€é©åŒ–ã‚’åŠ©ã‘ã‚‹ãŸã‚ã®ã‚‚ã®ã€‚restrictã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã‚’å‰Šé™¤ã—ã¦ã‚‚ãƒ—ãƒã‚°ãƒ©ãƒ ã®æ„å‘³ã¯å¤‰åŒ–ã—ãªã„ã€‚ ç”¨æ³•ã¨æ„å‘³ restrictã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã®ç”¨æ³•ã¯ã€Cæ¨™æº–ãƒ©ã‚¤ãƒ–ãƒ©ãƒªmemcpyé–¢æ•°ï¼memmoveé–¢æ•°ã«ãŠã‘ã‚‹å‹•ä½œä»•
mooz 2013/07/05
pointer aliasing

compiler

c

c99

optimization
ãƒªãƒ³ã‚¯
GitHub - rui314/8cc: A Small C Compiler
8cc C Compiler Note: 8cc is no longer an active project. The successor is chibicc. 8cc is a compiler for the C programming language. It's intended to support all C11 language features while keeping the code as small and simple as possible. The compiler is able to compile itself. You can see its code both as an implementation of the C language and as an example of what this compiler is able to comp
mooz 2012/05/12
C99 ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ï¼Žã‚»ãƒ«ãƒ•ãƒ›ã‚¹ãƒ†ã‚£ãƒ³ã‚°å¯èƒ½ï¼Žãƒžã‚·ãƒ³ã‚³ãƒ¼ãƒ‰ã®ç”Ÿæˆã¾ã§ï¼Ž

ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©

c

c99
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ãƒ•ãƒªãƒ¼ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢å¾¹åº•æ´»ç”¨è¬›åº§ - GCC - å²¸å“²å¤« - Interfaceã‚³ãƒ©ãƒ ç›®æ¬¡
â—†ç§»ã‚Šæ°—ãªæƒ…å ±å·¥å¦ ç¬¬62å›žã€€ åœ°éœ‡ã‚’ãã£ã‹ã‘ã«ãƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ãƒ»ã‚·ã‚¹ãƒ†ãƒ å†è€ƒ ç¬¬61å›žã€€ æµ·ã‚’æ¸¡ã£ã¦åµã‚’ç”£ã‚€åŒ—äº¬ã®ã€Œæµ·äº€æ—ã€ ç¬¬60å›žã€€ è¶…é è·é›¢é€šä¿¡ã¨ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ç„¡ç·š ç¬¬59å›žã€€ ITå…ˆé€²å›½ãƒ•ã‚£ãƒ³ãƒ©ãƒ³ãƒ‰ã®è¨ˆç”»æ€§ ç¬¬58å›žã€€ ç‰©ç†çš„ã«æ£ã—ã„ITã®ç’°å¢ƒå¯¾å¿œ ç¬¬57å›žã€€ å¹´é‡‘ï¼Œe-ãƒã‚±ãƒƒãƒˆã«è¦‹ã‚‹ãƒ‡ã‚£ã‚¸ã‚¿ãƒ«æ™‚ä»£ã®æƒ…å ±åŽŸæœ¬ ç¬¬56å›žã€€ ã€Œç€ã‚‹ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ã€ã‹ã‚‰ã€Œé€²åŒ–ã—ãŸå¸ƒåœ°ã€ã¸ ç¬¬55å›žã€€ æŠ€è¡“ã‚’æ¥½ã—ã‚€ãƒãƒƒãƒˆã®æ–‡åŒ– ç¬¬54å›žã€€ æƒ…å ±çˆ†ç™º2.0 ç¬¬53å›žã€€ ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã®ç¾å ´æ„Ÿè¦š ç¬¬52å›žã€€ GPS+LBSï¼ˆLocation Based Serviceï¼‰ãŒãŠã‚‚ã—ã‚ã„ ç¬¬51å›žã€€ æŠ€è¡“ã®æ ¼å·®ç¤¾ä¼š ç¬¬50å›žã€€ ãƒ•ã‚£ãƒ³ãƒ©ãƒ³ãƒ‰ã«è¦‹ã‚‹ï¼Œé«˜é½¢åŒ–ç¤¾ä¼šã‚’æ”¯ãˆã‚‹æŠ€è¡“ ç¬¬49å›žã€€ ãŸã‹ãŒæŠ€è¡“å€«ç†ï¼Œã•ã‚Œã©æŠ€è¡“å€«ç† ç¬¬48å›žã€€ è‹¥è€…ã®ç†ç§‘é›¢ã‚Œï¼Œ2007å¹´å•é¡Œã‹ã‚‰ã€Œæµ®éŠã€ã›ã‚ˆ ç¬¬47å›žã€€ æ©Ÿæ¢°ã®ãŸã‚ã®WWWâ€•â€•Google
mooz 2010/09/03
GCC ç‹¬è‡ªæ‹¡å¼µã®èª¬æ˜Žãªã©.

gcc

c

c99
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ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªž C ã®æ–°æ©Ÿèƒ½
7. æ–‡æ³•ä¸€èˆ¬ ã“ã®ç« ã§ã¯ C è¨€èªžã«æ–°ãŸã«åŠ ãˆã‚‰ã‚ŒãŸæŒ‡ç¤ºä»˜ãã®åˆæœŸåŒ–åã‚„è¤‡åˆãƒªãƒ†ãƒ©ãƒ«ã¨ã„ã£ãŸæ–‡æ³•ã‚„ã€æš—é»™æ™‚ã®å®£è¨€ã«é–¢ã™ã‚‹å¤‰æ›´ã¨ã„ã£ãŸã€å¤‰æ›´ã•ã‚ŒãŸæ–‡æ³•ã«ã¤ã„ã¦èª¬æ˜Žã—ã¾ã™ã€‚ 7.1ã€€æš—é»™ã®é–¢æ•°å®£è¨€ ç¾åœ¨ã® C è¨€èªžã®è¦æ ¼ã§ã¯ã€ã‚ã‚‹é–¢æ•°ã‹ã‚‰ä»–ã®é–¢æ•°ã‚’å‘¼ã³å‡ºã™æ™‚ã€ã¨ãã«ãã®é–¢æ•°ã®ãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ã‚’å®£è¨€ã—ãªãã¦ã‚‚ä½¿ç”¨ã™ã‚‹ã“ã¨ãŒã§ãã¾ã—ãŸã€‚ä¾‹ãˆã° stdio.h ã‚’èªã¿è¾¼ã¾ãšã«ã€printf ã‚’ä½¿ç”¨ã™ã‚‹ã¨ã„ã£ãŸã“ã¨ã§ã™ã€‚ã—ã‹ã—ã€ä»Šåº¦ã® C è¨€èªžã§ã¯ãã®ã‚ˆã†ãªå ´åˆã€ãã®é–¢æ•°ã®å‘¼ã³å‡ºã—ã¯è¦æ ¼ä¸Šæœªå®šç¾©ã®å‹•ä½œã¨ãªã‚Šã¾ã™ã€‚ãŸã å®Ÿéš›ã«ã¯å¤šãã®å‡¦ç†ç³»ã§ã¯è¦å‘Šã‚’å‡ºã—ã¦ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã‚ˆã†å®Ÿè£…ã•ã‚Œã‚‹ã“ã¨ã§ã—ã‚‡ã†ã€‚ã“ã®è¾ºã®æ©Ÿèƒ½ã¯ C++ ã«è¿‘ããªã£ã¦ã„ã¾ã™ãã€‚ 7.2ã€€å®£è¨€æ™‚ã®æš—é»™ã®åž‹ æ‰‹ç¶šãåž‹è¨€èªžã§ã¯ã€ä¸€èˆ¬çš„ã«å¤‰æ•°ã‚„é–¢æ•°ãªã©ã‚’å®£è¨€ã—ã¦ä½¿ç”¨ã™ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ã‚‚ã¡ã‚ã‚“ C è¨€èªžã‚‚ä¾‹å¤–ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ã—ã‹ã— C è¨€èªžã§ã¯ç‰¹ã«åž‹
mooz 2010/06/25
"restrict ä¿®é£¾åã¯ã€å‰è¿°ã—ãŸã‚ˆã†ãªãƒã‚¤ãƒ³ã‚¿ãŒåŒã˜å†…å®¹ã‚’æŒ‡ã—ã¦ã„ãªã„ã¨ã„ã†æƒ…å ±ã‚’ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã«æä¾›ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™" => ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãŒ SSE ã‚’ä½¿ã£ãŸæœ€é©åŒ–ãªã©ã‚’è¡Œãˆã‚‹.

c99
ãƒªãƒ³ã‚¯
ãƒªãƒªã‚«ãƒ«â˜†Lispé–‹ç™ºæ—¥è¨˜ Â» Blog Archive Â» with-open-fileã‚’C++/C99ã§
Common Lispã«ã¯with-open-fileã¨ã„ã†ãƒžã‚¯ãƒãŒã‚ã‚Šã¾ã™ã€‚ (with-open-file (stream filename) ... (read-line s) ... ) ã“ã®ãƒžã‚¯ãƒã¯ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã‚ªãƒ¼ãƒ—ãƒ³ã—ã¦ã€ ã“ã“ã‚’æŠœã‘ã‚‹ã¨ãã«è‡ªå‹•çš„ã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã‚¯ãƒãƒ¼ã‚ºã—ã¦ãã‚Œã‚‹ã¨ã„ã†ã‚‚ã®ã§ã™ã€‚ ãã®ãŸã‚ã€ãƒ•ã‚¡ã‚¤ãƒ«ã®é–‰ã˜å¿˜ã‚ŒãŒãŠã“ã‚Šã¾ã›ã‚“ã€‚ ã“ã®ãƒžã‚¯ãƒã‚’C++ã€ã‚‚ã—ãã¯C99ã§å†ç¾ã™ã‚‹æ–¹æ³•ã‚’æ€ã„ã¤ã„ãŸã®ã§ãƒ¡ãƒ¢ã—ã¦ãŠãã¾ã™ã€‚ #define with_open_file(s,p,m) \ for(FILE *s=fopen(p,m); s; fclose(s),s=NULL) ... void hoge(char *path) { char buf[256]; with_open_file(fp, path, "r") { ... fgets(buf, sizeof(buf), f
mooz 2010/06/09
ãƒžã‚¯ãƒã§ for (FILE *s=fopen(p,m); s; fclose(s),s=NULL) ã¨ã—ã¦ãŠãã¨, ãƒ–ãƒãƒƒã‚¯æ§‹æ–‡ã®ã‚ˆã†ã«ä½¿ãˆã‚‹.

c99

c++
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ãƒ›ãƒ¯ãƒƒãƒˆãƒ»ã‚¢ãƒ»ãƒ¯ãƒ³ãƒ€ãƒ•ãƒ«ãƒ»ãƒ¯ãƒ¼ãƒ«ãƒ‰ tgmath.h ã®å®Ÿè£…ã£ã¦ã©ã†ã‚„ã£ã¦ã‚“ã ?
ç§ã¯çŸ¥è˜ã«ä½•ã‚‚ã®ã‹ã‚’ä»˜ã‘åŠ ãˆï¼Œã¾ãŸä»–ã®äººã€…ãŒã‚ˆã‚Šå¤šãã®ã‚‚ã®ã‚’ä»˜ã‘åŠ ãˆã‚‹æ‰‹åŠ©ã‘ã‚’ã—ãŸ --- G.H.ãƒãƒ¼ãƒ‡ã‚£ ä»Šï¼Œãªã‚“ã‹æ‰‹å…ƒã® Windows æ©Ÿã® gcc ã ã¨ï¼Œ/usr/include ã« tgmath.h ãŒè¦‹ã¤ã‹ã‚‰ãªã„ (include ã‚‚ã§ããªã„ã£ã½ã„) ã®ã§ï¼Œãƒ¡ãƒ¢ã ã‘ï¼Ž J 2007-01-15 â– Cã§åž‹å®‰å…¨å¯å¤‰é•·é…åˆ—ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ã¤ãã‚‹ ã®ã‚³ãƒ¡ãƒ³ãƒˆæ¬„ shinichiro_h ã€ŽC ã®ãƒ†ãƒ³ãƒ—ãƒ¬ãƒ¼ãƒˆã¨ã„ã†ã¨ã€æ—¢ã«è¨€ã£ãŸã“ã¨ã‚ã‚‹ã‹ã‚‚ã§ã™ãŒã€ C99 ã® tgmath.h ã¯ C ã§ãƒ†ãƒ³ãƒ—ãƒ¬ãƒ¼ãƒˆé–¢æ•°ã®ç‰¹æ®ŠåŒ–ã‚„ã£ãŸã‚Šã—ã¦ã¦ã‚¹ãƒ†ã‚ã ã¨æ€ã„ã¾ã™ã€‚ã€ (2007/01/18 14:56) ç¢ºã‹ã«ï¼ŒC99 ã® tgmath.h ã®ä»•æ§˜ã¯ãƒ ãƒãƒ£ã‚¯ãƒãƒ£ã§ã™ï¼Ž ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªž C ã®æ–°æ©Ÿèƒ½ 9.6ã€€tgmath.h: åž‹ç·ç§°æ•°å¦é–¢æ•° ã¨ã¦ã‚‚æ¨™æº– C99 ã®æž å†…ã§å®Ÿè£…ã§ãã‚‹ã¨ã¯æ€ãˆãªã„ã®ã§ã™ãŒâ€¦
mooz 2010/06/04
C99 ã® tgmath.h (åž‹ã«ã‚ˆã£ã¦å±•é–‹ã•ã‚Œã‚‹é–¢æ•°åã‚’å¤‰ãˆã‚‹) ãŒã©ã®ã‚ˆã†ã«å®Ÿè£…ã•ã‚Œã¦ã„ã‚‹ã‹. Don't ask how it works.

c99
ãƒªãƒ³ã‚¯
ã‚ˆãã‚ã‚‹ã“ã†ã„ã†ã®ã«ãƒãƒžã£ãŸã€‚ - moriyoshiã®æ—¥è¨˜
ã¤ã„ã‚„ã£ã¦ã—ã¾ã†ã®ã§è‡ªæˆ’ã‚’è¾¼ã‚ã¦ã€‚ (C99) #include <stdio.h> struct vector { double elts[3]; }; #define create_vector_1(a, b, c) (struct vector){ a, b, c } static inline struct vector create_vector_2(double a, double b, double c) { return (struct vector){ a, b, c }; } static void print_vector(struct vector v) { printf("(%g, %g, %g)\n", v.elts[0], v.elts[1], v.elts[2]); } int main() { { double f = 0; print_vector(cr
mooz 2010/04/27
ã©ã†ã„ã£ãŸæœ€é©åŒ–ã®ã•ã‚Œã‹ãŸãªã®ã ã‚ã†ã‹.

c99
ãƒªãƒ³ã‚¯
Linux kernel ã® wireless.c ã§ .header_type ã¨ã‹ï¼Œãƒ‰ãƒƒãƒˆã§å§‹ã¾ã‚‹å¤‰æ•°åï¼ŸãŒã‚ã‚‹ä»¶ã«ã¤ã„ã¦ - ç«¹è¿«ã®è¿‘æ³å ±å‘Š
http://twitter.com/k_morihisa/status/9006163842 Twitter / Morihisa Kazuaki: Linux kernel ã® wireless.c ã§ .header_type ã¨ã‹ï¼Œãƒ‰ãƒƒãƒˆã§å§‹ã¾ã‚‹å¤‰æ•°åï¼ŸãŒã‚ã‚‹ï¼Žè¬Ž Linux-Kernel Archive: 2.6.18-git9 wireless fixes break ipw2200 association to AP with WPAã®ãƒ‘ãƒƒãƒã¨ã‹ã¿ã‚‹ã¨ã€ãŸã—ã‹ã«ã“ã‚“ãªæ–ç‰‡ã®Cè¨€èªžã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ãŒã§ã¦ãã‚‹ã€‚ @@ -242,24 +234,24 @@ [SIOCSIWESSID - SIOCIWFIRST] = { .header_type = IW_HEADER_TYPE_POINT, .token_size = 1, - .max_tokens = IW_ESSID_MAX
mooz 2010/02/13
with ã£ã½ã„ãªã«ã‹ã€‚ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã‚’æŒ‡å®šã—ãŸé…åˆ—ã®åˆæœŸåŒ–ã€‚

c99
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