名前空間
変種
操作

rint, lrint, llrint

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)
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>
int rintf( float arg );
int rint( double arg );
int rintl( long double arg );
long lrintf( float arg );
long lrint( double arg );
long lrintl( long double arg );
long long llrintf( float arg );
long long llrint( double arg );
long long llrintl( long double arg );
浮動小数点形式の整数値に丸め浮動小数点引数arg、現在の丸めモードを使用しています。結果はarg(すなわち、argがすでに整数値ではありませんでした)と異なる場合は、浮動小数点例外が発生しますFE_INEXACT.
Original:
Rounds the floating-point argument arg to an integer value in floating-point format, using the current rounding mode. If the result differs from arg (i.e., arg was not an integer value already), the floating-point exception FE_INEXACT is raised.
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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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[編集] 値を返します

丸めargの整数の結果
Original:
The integer result of rounding arg
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[編集] ノート

唯一の違いnearbyintrintrintがそれを発生させたことがないながらFE_INEXACTは、nearbyint浮動小数点の例外を発生させるかもしれないということです.
Original:
The only difference between nearbyint and rint is that rint may raise the FE_INEXACT floating-point exception, while nearbyint never raises it.
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[編集]

[編集] も参照してください

現在の丸めモードを使用して、最も近い整数
Original:
nearest integer using current rounding mode
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(機能) [edit]
(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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(機能) [edit]