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ã“ã®ãƒ—ãƒ¬ã‚¼ãƒ³ã§ç´¹ä»‹ã—ãŸ tgmath.h ã®å®Ÿè£…ãŒç´ æ™´ã‚‰ã—ã„ã¨ã„ã†è©±ãªã‚“ã§ã™ãŒã€è³‡æ–™ã¯å£é ã§èª¬æ˜Žã™ã‚‹å‰æã™ãŽã¦ã€ã‚¤ãƒžã‚¤ãƒè©³ã—ããªã„ã®ã§åˆ¥ã«æ›¸ã„ã¦ãŠã“ã†ã‹ãªãã¨æ€ã„ã¾ã™ã€‚ã“ã‚Œã¯ C ã§åž‹è¨ˆç®—ã‚„ã£ã¦ã‚‹ã¨è¨€ãˆã‚‹ã¨æ€ã†ã®ã§ãªã‹ãªã‹ãªã‚‚ã‚“ãªã®ã§ã™ã€‚ ãã‚‚ãã‚‚ tgmath.h ã¨ã„ã†ãƒ˜ãƒƒãƒ€ãŒä½•ã‹ã¨è¨€ã†ã¨ã€ Type-generic math ã®ç•¥ã§ã€ C99 ã® PDF ã® 7.22 ã«æ›¸ã„ã¦ã‚ã‚Šã¾ã™ã€‚ã¡ãªã¿ã«ãŸã¶ã‚“ç§ã¯ã“ã® PDF ã‚’å‚ç…§ã—ã¦ã¾ã™ã€‚ http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf æ›¸ã„ã¦ã‚ã‚‹ã“ã¨ã¯ä»¥ä¸‹ 4 ç‚¹: tgmath.h ã‚’ #include ã™ã‚‹ã¨ math.h ã¨ complex.h ã‚‚ #include ã•ã‚Œã¦ type-generic ãªãƒžã‚¯ãƒã‚’å®šç¾©ã—ã¾ã£ã› sinf ã‚„ã‚‰ sinl ã¿ãŸã„ãªã®ã˜ã‚ƒ
mechairoi 2010/07/06
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ã“ã®ãƒ—ãƒ¬ã‚¼ãƒ³ã§ç´¹ä»‹ã—ãŸ tgmath.h ã®å®Ÿè£…ãŒç´ æ™´ã‚‰ã—ã„ã¨ã„ã†è©±ãªã‚“ã§ã™ãŒã€è³‡æ–™ã¯å£é ã§èª¬æ˜Žã™ã‚‹å‰æã™ãŽã¦ã€ã‚¤ãƒžã‚¤ãƒè©³ã—ããªã„ã®ã§åˆ¥ã«æ›¸ã„ã¦ãŠã“ã†ã‹ãªãã¨æ€ã„ã¾ã™ã€‚ã“ã‚Œã¯ C ã§åž‹è¨ˆç®—ã‚„ã£ã¦ã‚‹ã¨è¨€ãˆã‚‹ã¨æ€ã†ã®ã§ãªã‹ãªã‹ãªã‚‚ã‚“ãªã®ã§ã™ã€‚ ãã‚‚ãã‚‚ tgmath.h ã¨ã„ã†ãƒ˜ãƒƒãƒ€ãŒä½•ã‹ã¨è¨€ã†ã¨ã€ Type-generic math ã®ç•¥ã§ã€ C99 ã® PDF ã® 7.22 ã«æ›¸ã„ã¦ã‚ã‚Šã¾ã™ã€‚ã¡ãªã¿ã«ãŸã¶ã‚“ç§ã¯ã“ã® PDF ã‚’å‚ç…§ã—ã¦ã¾ã™ã€‚ http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1124.pdf æ›¸ã„ã¦ã‚ã‚‹ã“ã¨ã¯ä»¥ä¸‹ 4 ç‚¹: tgmath.h ã‚’ #include ã™ã‚‹ã¨ math.h ã¨ complex.h ã‚‚ #include ã•ã‚Œã¦ type-generic ãªãƒžã‚¯ãƒã‚’å®šç¾©ã—ã¾ã£ã› sinf ã‚„ã‚‰ sinl ã¿ãŸã„ãªã®ã˜ã‚ƒ
mechairoi 2010/07/06
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mechairoi 2010/03/29
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State of the art C compiler optimization tricks, Felix von Leitner, Linux Kongress 2009. æœ€è¿‘ã®ï¼£ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãƒ¼ã®æœ€é©åŒ–èƒ½åŠ›ã«ã¤ã„ã¦ã¾ã¨ã‚ãŸãƒ—ãƒ¬ã‚¼ãƒ³ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã€‚å®šæ•°ã®æ‰±ã„ã‚„ã‚¤ãƒ³ãƒ©ã‚¤ãƒ³å±•é–‹ãªã©ã®åŸºæœ¬çš„ãªé …ç›®ã‹ã‚‰å§‹ã¾ã£ã¦ï¼Œåˆ†å²ã®å‰Šé™¤ã‚„ãƒ™ã‚¯ãƒˆãƒ«åŒ–ï¼Œ SIMD åŒ–ãªã©ï¼Œæœ€æ–°ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãƒ¼ã«æè¼‰ã•ã‚Œã¦ã„ã‚‹æ§˜ã€…ãªæ©Ÿèƒ½ã«ã¤ã„ã¦èª¿ã¹ã¦ã„ã‚‹ã€‚ ã“ã®æ‰‹ã®åˆ†å²ã®å‰Šé™¤ã¯ã»ã¨ã‚“ã©ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãƒ¼ã§æœ‰åŠ¹ã‚‰ã—ã„ã€‚ ãƒ™ã‚¯ãƒˆãƒ«åŒ–ã«ã¤ã„ã¦ã¯ gcc ãŒã ã„ã¶é ‘å¼µã£ã¦ã„ã‚‹å°è±¡ã€‚ ã€Œgcc ã¯å…¨ãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ ã«ãŠã„ã¦ãƒ“ãƒ‡ã‚ªã‚³ãƒ¼ãƒ‡ãƒƒã‚¯ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã‚ˆã‚Šè³¢ã„ã€ ã“ã‚Œã‚‰ã®æœ€é©åŒ–ãŒå®Ÿéš›ã®ã‚³ãƒ¼ãƒ‰ã§ã©ã®ã‚ˆã†ã«æ©Ÿèƒ½ã™ã‚‹ã‹æ°—ã«ãªã£ã¦é€†ã‚¢ã‚»ãƒ³ãƒ–ãƒªã‚³ãƒ¼ãƒ‰ã‚’è¦—ã„ã¦ã¿ã‚‹äººã‚‚å°‘ãªããªã„ã¨æ€ã†ã‘ã‚Œã©ï¼Œãã‚Œã‚’ä»£ã‚ã‚Šã«ã‚„ã£ã¦ãã‚ŒãŸæ„Ÿã˜ã ã€‚ã“ã®æ‰‹ã®è©±é¡Œã«èˆˆå‘³ãŒã‚ã‚‹äººãªã‚‰ã°ï¼Œç›®ã‚’é€š
mechairoi 2010/01/25
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