log2
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Defined in header <math.h>
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float log2f( float arg ); |
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double log2( double arg ); |
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long double log2l( long double arg ); |
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2のベースargする対数を計算します.
Original:
Computes the base 2 logarithm of arg.
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] 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
log
2(arg)
arg
が負の場合はドメイン·エラーが発生します。 NANはその場合に返されます.Original:
Domain error occurs if
arg
is negative. NAN is returned in that case.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
0場合、範囲エラーが発生します。 -HUGE_VALはその場合に返されます. Original:
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] も参照してください
計算する自然(底 E)対数(底へ E)(ln(x)) Original: computes natural (base e) logarithm (to base e) (ln(x)) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数) | |
計算するコモン(ベース 10)対数(log10(x)) Original: computes common (base 10) logarithm (log10(x)) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数) | |
C++ documentation for log2
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