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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:
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& Q/ u/ j! G: B//自定义反渐开线函数- S, u4 D9 z7 l' \: N4 T
double __fastcall TForm_Inv::ArcInv(double x)
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8 H8 j' g4 C' Q2 g) C6 } const double MaxError=0.0000000001, MaxCount=100000;
- C2 ~ d) M0 S, \ double x1,x2,Error;
! J% s/ @: s+ @4 C g8 m v- l- f3 o int num;
6 S! w6 t5 {+ X, D x1 = 3*x;
) v: Z# }( A% y, Z- c0 n x1 = exp(log10(x1)/3);
8 K* @7 h" z4 ^2 b+ s) F1 p( V Error =1;/ H- C5 `" o% n2 Z- S: g5 W
num = 0;
7 u' _+ Z `$ ~& e% b" I" w6 f P while ((Error > MaxError) && (num < MaxCount))+ n6 O) g" P3 z$ K3 g
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x2 = acos(sin(x1)/(x+x1));
) N. [5 O& e% t |3 d# B6 F Error = fabs(x2 -x1);
8 e/ l! r; D3 @9 _9 n num++;
y; X7 v6 J9 _. @ x1 = x2;
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return(x1);
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8 p+ m' _; Z3 G+ E0 U程序运行界面参考附图! |
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