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std::float_round_style

提供: cppreference.com

 
 
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Defined in header <limits>
enum float_round_style {

    round_indeterminate       = -1,
    round_toward_zero         = 0,
    round_to_nearest          = 1,
    round_toward_infinity     = 2,
    round_toward_neg_infinity = 3

};
式の結果は浮動小数点型のオブジェクトに格納されるたびに、タイプstd::float_round_styleの列挙定数は、浮動小数点演算で使用される丸めスタイルを示しています。値は以下の通りです
Original:
Enumeration constants of type std::float_round_style indicate the rounding style used by floating-point arithmetics whenever a result of an expression is stored in an object of a floating-point type. The values are:
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[編集] 列挙定数

名前
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Name
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Definition
std::round_indeterminate
丸めのスタイルを決定することができません
Original:
Rounding style cannot be determined
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std::round_toward_zero
ゼロへの丸め
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Rounding toward zero
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std::round_to_nearest
表現可能な最も近い値への丸め
Original:
Rounding toward nearest representable value
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std::round_toward_infinity
正の無限大への丸め
Original:
Rounding toward positive infinity
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std::round_toward_neg_infinity
負の無限大への丸め
Original:
Rounding toward negative infinity
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[編集] も参照してください

[静的]
タイプで使用される丸めスタイルを識別します
Original:
identifies the rounding style used by the type
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(公共の静的メンバ定数) [edit]
浮動小数点の丸め方向
Original:
floating-point rounding direction
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(マクロ定数) [edit]