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std::isfinite

提供: cppreference.com
< cpp‎ | numeric‎ | math

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C++
 
ニューメリックスライブラリ
一般的な数学関数
浮動小数点環境
複素数
数値配列
擬似乱数生成
コンパイル時有理数演算 (C++11)
汎用の数値演算
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Generic numeric operations
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iota(C++11)
accumulate
inner_product
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一般的な数学関数
機能します
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Functions
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基本操作
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Basic operations
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remainder(C++11)
remquo(C++11)
fma(C++11)
fmax(C++11)
fmin(C++11)
fdim(C++11)
nan
nanf
nanl		(C++11)
(C++11)
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指数関数
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Exponential functions
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exp
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Power functions
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erf(C++11)
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Nearest integer floating point operations
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Floating point manipulation functions
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copysign(C++11)
分類/比較
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Classification/Comparison
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fpclassify(C++11)
isfinite(C++11)
isinf(C++11)
isnan(C++11)
isnormal(C++11)
signbit(C++11)
isgreater(C++11)
isgreaterequal(C++11)
isless(C++11)
islessequal(C++11)
islessgreater(C++11)
isunordered(C++11)
マクロ定数
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Macro constants
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FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN		(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
 
Defined in header <cmath>
bool isfinite( float arg );
 (C++11およびそれ以降)
bool isfinite( double arg );
 (C++11およびそれ以降)
bool isfinite( long double arg );
 (C++11およびそれ以降)
それは、通常の非正規またはゼロですが、無限またはargないすなわち与えられた浮動小数点数NANが有限の値を持っているかどうかを判断します.
Original:
Determines if the given floating point number arg has finite value i.e. it is normal, subnormal or zero, but not infinite or NAN.
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[編集] パラメータ

arg -
浮動小数点値
Original:
floating point value
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[編集] 値を返します

true場合arg値がfalseそうでなければ、有限の値を持っています
Original:
true value if arg has finite value, false otherwise
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[編集] 参照

(C++11)
指定された浮動小数点値を分類しています
Original:
categorizes the given floating point value
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(関数) [edit]
(C++11)
与えられた数が無限であるかどうかをチェックします
Original:
checks if the given number is infinite
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(関数) [edit]
(C++11)
与えられた番号かどうかをチェックするにはNaNになります
Original:
checks if the given number is NaN
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(関数) [edit]
(C++11)
指定された数値が正常であるかどうかをチェックします
Original:
checks if the given number is normal
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(関数) [edit]
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