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copysign

提供: cppreference.com
< c‎ | numeric‎ | math

 
 
 
一般的な数学関数
機能します
Original:
Functions
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基本操作
Original:
Basic operations
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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
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
電源機能
Original:
Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
三角関数や双曲線関数
Original:
Trigonometric and hyperbolic functions
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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
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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
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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
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
frexp
modf
nextafter
nexttoward
(C99)
(C99)
copysign(C99)
分類
Original:
Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
マクロ定数
Original:
Macro constants
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Defined in header <math.h>
float       copysignf( float x, float y );
double      copysign( double x, double y );
long double copysignl( long double x, long double y );
xyの記号の大きさを持つ浮動小数点値を構成している.
Original:
Composes a floating point value with the magnitude of x and the sign of y.
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[編集] パラメータ

x, y -
浮動小数点値
Original:
floating point values
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[編集] 値を返します

xyの記号の大きさを持つ浮動小数点値
Original:
Floating point value with the magnitude of x and the sign of y
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[編集] も参照してください

浮動小数点値の絶対値(|x|
Original:
absolute value of a floating point value (|x|)
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(関数) [edit]
チェック与えられた数値が負の場合
Original:
checks if the given number is negative
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(関数) [edit]
C++ documentation for copysign