significand 中文意思是什麼

significand 解釋
有效數
  1. To modify the fp control word, then the run - time startup code will set the x87 fpu control word precision - control field to 53 - bits, so all float and double operations within an expression will occur with 53 - bit significand and 15 - bit exponent

    修改fp控制字,則運行庫啟動代碼會將x87 fpu控制字精度控制欄位設置為53位,這樣,表達式內的所有浮點運算和雙精度運算都以53位有效數和15位指數進行。
  2. All sse single - precision operations will, however, use a 24 - bit significand 8 - bit exponent, and sse2 double - precision operations will use a 53 - bit significand 11 - bit exponent

    但是,所有sse單精度運算都將使用24位有效數/ 8位指數,而sse2雙精度運算將使用53位有效數/ 11位指數。
  3. The internal representation of a floating - point number, including the format and precision of the significand and the format and range of the exponent, is implementation defined

    一個浮點數目的內部表示法,包含格式和有效的精確度及格式和指數的范圍,是實作自訂的
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