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Math.f16round()
ã¯éçã¡ã½ããã§ãæ°å¤ã«æãè¿ã 16 ãããå精度浮åå°æ°ç¹è¡¨ç¾ãè¿ãã¾ãã
console.log(Math.f16round(5.5));
// Expected output: 5.5
console.log(Math.f16round(5.05));
// Expected output: 5.05078125
console.log(Math.f16round(5));
// Expected output: 5
console.log(Math.f16round(-5.05));
// Expected output: -5.05078125
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Math.f16round(doubleFloat)
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doubleFloat
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doubleFloat
ã«æãè¿ã 16 ãããå精度浮åå°æ°ç¹è¡¨ç¾ã§ãã
Math.f16round
ã¯ã Math.fround()
ã® 16 ãããçã§ããããã¯ã Float16Array
ããèªã¿è¾¼ãå ´åãªã©ã float16 ã®æ°å¤ãæä½ããéã«ãæå³éãã«åä½ãã¾ããå
é¨çã«ã¯ãJavaScript ã§æ°å¤ã¯å¼ãç¶ã 64 ãããæµ®åå°æ°ç¹æ°ã¨ãã¦æ±ããä»®æ°é¨ã® 10 ãããç®ã§ãå¶æ°ã¸ã®ä¸¸ãããè¡ããç¶ãä»®æ°é¨ã®ããããã¹ã¦ã 0 ã«è¨å®ãã¾ããæ°å¤ã 16 ãããæµ®åå°æ°ç¹æ°ã®ç¯å²å¤ã§ããå ´åã Infinity
ã¾ã㯠-Infinity
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f16round()
㯠Math
ã®éçã¡ã½ããã§ãããããçæãã Math
ãªãã¸ã§ã¯ãã®ã¡ã½ããã¨ãã¦ã§ã¯ãªãã常㫠Math.f16round()
ã¨ãã¦ä½¿ç¨ããããã«ãã¦ãã ããï¼Math
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1.5 ã¨ããæ°å㯠2 鲿³ã§æ£ç¢ºã«è¡¨ããã¨ãã§ãã 16 ãããã§ã 64 ãããã§ãåãã§ãã
Math.f16round(1.5); // 1.5
Math.f16round(1.5) === 1.5; // true
ãããã 1.337 ã¨ããæ°å㯠2 鲿³ã§ã¯æ£ç¢ºã«è¡¨ããã¨ãã§ããªãããã 16 ããã㨠64 ãããã§ã¯å·®ãåºã¾ãã
Math.f16round(1.337); // 1.3369140625
Math.f16round(1.337) === 1.337; // false
100000 㯠16 ãããæµ®åå°æ°ç¹ã§ã¯å¤§ããããã®ã§ã Infinity
ãè¿ããã¾ãã
Math.f16round(100000); // Infinity
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