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发表于 2009-11-26 08:51:36
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来自: 中国广东深圳
给楼主一份反渐开线函数的C++源代码:; g3 Q1 j8 t. W2 g. J( v0 a
' m- u2 C; ^2 a1 W' [. e//自定义反渐开线函数; u' K. _0 D! r! Z) p# n
double __fastcall TForm_Inv::ArcInv(double x)
4 L: O5 Y/ p' }( y7 s{
8 \$ n7 ^: N' Y% E9 W3 G; W const double MaxError=0.0000000001, MaxCount=100000;
6 Z0 l( v2 R. v9 x0 j4 R7 ^8 }4 T4 o double x1,x2,Error;
8 }& n% i2 z9 n) ~% z int num;3 w: g/ q: a0 G, n1 g, x. `3 X
x1 = 3*x;9 i. H' ] P" H1 v E# i: o5 ]- g
x1 = exp(log10(x1)/3);
/ S5 v j& q, p0 X B Error =1;
3 \ H8 \3 u& G num = 0;# W% m G3 U1 K5 k; q
while ((Error > MaxError) && (num < MaxCount))5 I& ?3 O3 r& N; b* K: n& i; H
{
4 o- R4 l/ ?, H* T; a. b% l x2 = acos(sin(x1)/(x+x1));
7 ~5 e& Y T! e) H Error = fabs(x2 -x1);
& k* M- k7 T( | num++;
$ s+ c4 l. g4 x% X# t( ]6 j x1 = x2;
2 R; B7 p7 q' `8 ], G4 K6 D }
/ E- k% @: k1 [4 X% k( x1 c return(x1);: s. m6 e2 U% |9 f1 v
}
, v; ? K K5 _****************& y% p- p+ V) V9 O; t" Q( C/ A
程序运行界面参考附图! |
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