hypot
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| Defined in header <math.h>
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| float hypotf( float x, float y ); |
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| double hypot( double x, double y ); |
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| long double hypotl( long double x, long double y ); |
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計算の中間段階での過度のオーバーフローまたはアンダーフローが発生することなく、
xとyの二乗和の平方根を計算します。これは、長さの辺をもつ直角三角形の斜辺の長さxとy、または起点(x,y)、または複素数(0,0)の大きさから点x+iyの距離Original:
Computes the square root of the sum of the squares of
x and y, without undue overflow or underflow at intermediate stages of the computation. This is the length of the hypotenuse of a right-angled triangle with sides of length x and y, or the distance of the point (x,y) from the origin (0,0), or the magnitude of a complex number x+iyThe text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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目次 |
[編集] パラメータ
| x | - | 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. |
| y | - | 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
直角三角形の斜辺、√x2
+y2
.
+y2
.
Original:
The hypotenuse of a right-angled triangle, √x2
+y2
.
+y2
.
The text has been machine-translated via Google Translate.
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[編集] 例外
結果がオーバーフローした場合は、範囲エラーが発生する可能性があり、FE_OVERFLOWが発生する場合があります.
Original:
If the result overflows, a range error may occur and FE_OVERFLOW may be raised.
The text has been machine-translated via Google Translate.
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結果が非正規の場合は、アンダーフローエラーが発生する可能性があり、FE_UNDERFLOWが発生する場合があります.
Original:
If the result is subnormal, an underflow error may occur and FE_UNDERFLOW may be raised.
The text has been machine-translated via Google Translate.
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[編集] ノート
典型的な実装戦略はu√1+(
)2
の等価
| v |
| u |
の等価
uですmax(x,y)とvmin(x,y)です..を計算することであるOriginal:
Typical implementation strategy is to calculate an equivalent of u√1+(
)2
where
| v |
| u |
where
u is max(x,y) and v is min(x,y).The text has been machine-translated via Google Translate.
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[編集] 例
| This section is incomplete Reason: no example |
[編集] も参照してください
| 平方根は（√x）を計算します Original: computes square root (√x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数) | |
| 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. (関数) | |
| C++ documentation for hypot
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