std::lgamma
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| ヘッダ <cmath> で定義
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| float lgamma( float arg ); |
(C++11およびそれ以降) | |
| double lgamma( double arg ); |
(C++11およびそれ以降) | |
| long double lgamma( long double arg ); |
(C++11およびそれ以降) | |
| double lgamma( Integral arg ); |
(C++11およびそれ以降) | |
ガンマ関数の
argの絶対値の自然対数を計算します.Original:
Computes the natural logarithm of the absolute value of the ガンマ関数 of
arg.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
目次 |
[編集] パラメータ
| arg | - | 浮動小数点値
Original: floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
[編集] 値を返します
argですloge|∫∞
0targ-1
e-t dt|のガンマ関数の対数の値.
Original:
The value of the logarithm of the gamma function of
e|∫∞
0targ-1
e-t dt|.
arg, that is loge|∫∞
0targ-1
e-t dt|.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
argは自然数である場合、std::lgamma(arg)はarg-1の階乗の対数です.Original:
If
arg is a natural number, std::lgamma(arg) is the logarithm of the factorial of arg-1.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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[編集] 例外
argがゼロまたは負の整数の場合、極エラーが発生することがあり、FE_INVALIDまたはFE_DIVBYZEROが発生する場合があります.Original:
If
arg is zero or a negative integer, pole error may occur and FE_INVALID or FE_DIVBYZERO may be raised.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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argが大きすぎる場合、範囲エラーが発生することがありますとFE_OVERFLOWが発生する場合があります.Original:
If
arg is too large, range error may occur and FE_OVERFLOW may be raised.The text has been machine-translated via Google Translate.
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[編集] ノート
POSIX specificationはさらにlgammaを実行する毎に外部変数
argでsigngamのガンマ関数の符号を格納する必要があります.Original:
POSIX specification additionally requires that each execution of lgamma stores the sign of the gamma function of
arg in the external variable signgam.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
[編集] 参照
| (C++11) |
ガンマ関数を計算します (関数) |
| lgamma の C言語リファレンス
| |
[編集] 外部リンク
Weisstein, Eric W. "Log Gamma Function."MathWorldのから - WolframのWebリソース.
Original:
Weisstein, Eric W. "Log Gamma Function." From MathWorld--A Wolfram Web Resource.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
