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modf

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       modff( float x, float* iptr );
double      modf( double x, double* iptr );
long double modfl( long double x, long double* iptr );
整数部と小数部、xと同じ型と符号を有する各々に浮動小数点値x与え分解する。不可分の一部は(浮動小数点形式)iptrが指すオブジェクトに格納されてい.
Original:
Decomposes given floating point value x into integral and fractional parts, each having the same type and sign as x. The integral part (in floating-point format) is stored in the object pointed to by iptr.
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目次

[編集] パラメータ

arg -
浮動小数点値
Original:
floating point value
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iptr -
に不可欠な要素を格納するための浮動小数点値へのポインタ
Original:
pointer to floating point value to store the integral part to
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[編集] 値を返します

xと同じ符号を持つxの小数部分。整数部はiptrが指す値に入れられ.
Original:
The fractional part of x with the same sign as x. The integral part is put into the value pointed to by iptr.
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[編集]

[編集] も参照してください

(C99)
与えられた値よりも大きさが大きくない最も近い整数
Original:
nearest integer not greater in magnitude than the given value
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(関数) [edit]