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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:& u) n1 V- i w* a' I
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//自定义反渐开线函数
. E- t# S7 m4 k8 Jdouble __fastcall TForm_Inv::ArcInv(double x)
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const double MaxError=0.0000000001, MaxCount=100000;4 ]" ~! [# \- |* K `
double x1,x2,Error;
8 q; v6 i7 o$ {' s0 u int num;) S! F# {3 j# u9 N2 ^) l
x1 = 3*x;
7 J6 H5 j o# c x1 = exp(log10(x1)/3);8 a( q/ R2 H/ w) P/ l
Error =1;; h+ }% m9 x1 x0 @8 m, m
num = 0;0 O4 V" o" }+ C/ b% ~
while ((Error > MaxError) && (num < MaxCount))
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x2 = acos(sin(x1)/(x+x1)); ]8 W4 f, E ?) L
Error = fabs(x2 -x1);
! c8 ?+ `$ Y3 [( _ num++;. G J0 k5 {# M6 {
x1 = x2;( S; o* `# ~& h9 `4 m& `
}
9 \+ @& k* w P. ?8 u+ q# l* ^ return(x1);
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****************7 l7 g: u; G/ y9 w; _3 [/ f% G
程序运行界面参考附图! |
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