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Cクイックリファレンス 第2版
book

Cクイックリファレンス 第2版

by Peter Prinz, Tony Crawford, 黒川 利明, 島 敏博
November 2016
Beginner to intermediate
816 pages
19h 58m
Japanese
O'Reilly Japan, Inc.
Content preview from Cクイックリファレンス 第2版
sinh
553
sinh
数の双曲線正弦を計算する
#include <math.h>
double sinh(double
x
);
float sinhf(float
x
); (C99)
long double sinhl(long double
x
); (C99)
sinh()
関数は引数
x
の双曲線正弦を計算する。
sinh()
の結果が
double
型には大きすぎる
と、値域エラーを起こす。
// 2
点から下がる鎖は懸垂線という曲線になる。懸垂線は定数
k
の関数
cosh(k*x)/k
//
のグラフの一部だ。
x=a
x=b
2
垂線に区切られた懸垂線の長さは
// sinh(k*b)/k - sinh(k*a)/k
に等しい。
puts("Catenary f(x) = cosh(k*x)/k\n"
"Length along the catena
ry from a to b: "
"sinh(k*b)/k - sinh(k*a)/k)\n");
puts(" f(-1.0) f(0.0) f(1.0) f(2.0) Length(-1.0 to 2.0)\n"
"-------------------------------------------------------------------");
for (double k = 0.5; k < 5; k *= 2)
{
printf("k = %.1f: ", k);
for (double x = -1.0; x < 2.1; x += ...
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Publisher Resources

ISBN: 9784873117812Other