名前空間
変種
操作

log

提供: cppreference.com
< c‎ | numeric‎ | math

 
 
 
一般的な数学関数
機能します
Original:
Functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
基本操作
Original:
Basic operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
remainder(C99)
remquo(C99)
fma(C99)
fmax(C99)
fmin(C99)
fdim(C99)
nan
nanf
nanl
(C99)
(C99)
(C99)
指数関数
Original:
Exponential functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
電源機能
Original:
Power functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
sqrt
cbrt(C99)
hypot(C99)
pow
三角関数や双曲線関数
Original:
Trigonometric and hyperbolic functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
エラーおよびガンマ関数
Original:
Error and gamma functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
最も近い整数の浮動小数点演算
Original:
Nearest integer floating point operations
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ceil
floor
round
lround
llround
(C99)
(C99)
(C99)
trunc(C99)
nearbyint(C99)
rint
lrint
llrint
(C99)
(C99)
(C99)
点操作関数に浮かぶ
Original:
Floating point manipulation functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
分類
Original:
Classification
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
マクロ定数
Original:
Macro constants
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 
Defined in header <math.h>
float       logf( float arg );
double      log( double arg );
long double logl( long double arg );

Computes the natural (base e) logarithm of arg.

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

Natural logarithm of 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.
arg0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:
Range error occurs if arg is 0. -HUGE_VAL 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.

[編集]

[編集] も参照してください

戻り eを与えられた電力(ex)に引き上げた
Original:
returns e raised to the given power (ex)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(機能) [edit]
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.

(機能) [edit]
与えられた電力(xy)に番号を発生させます
Original:
raises a number to the given power (xy)
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(機能) [edit]