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atan2

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< 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
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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
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Exponential functions
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
電源機能
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Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
三角関数や双曲線関数
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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
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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
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Floating point manipulation functions
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
分類
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Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
マクロ定数
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Macro constants
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Defined in header <math.h>
float       atan2f( float y, float x );
double      atan2( double y, double x );
long double atan2l( long double y, long double x );
正しく象限を決定するための引数の符号を用いてy/xの逆正接を計算.
Original:
Computes the inverse tangent of y/x using the signs of arguments to correctly determine quadrant.
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目次

[編集] パラメータ

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

y/xラジアンの範囲のラジアンで表わした[-π; π]のアークタンジェント.
Original:
Arc tangent of y/x in radians in the range of [-π; π] radians.
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[編集]

[編集] も参照してください

アークタンジェント(arctan(x))を計算します
Original:
computes arc tangent (arctan(x))
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(機能) [edit]
アークサイン(arcsin(x))を計算します
Original:
computes arc sine (arcsin(x))
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(機能) [edit]
アークコサイン(arccos(x))を計算します
Original:
computes arc cosine (arccos(x))
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(機能) [edit]
正接(tan(x))を計算します
Original:
computes tangent (tan(x))
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(機能) [edit]