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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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7 @5 K/ p/ m% E; T% F# H/ v+ J//自定义反渐开线函数$ S' A4 x, }6 W+ H7 {
double __fastcall TForm_Inv::ArcInv(double x)
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! f, ^0 W3 z) ]6 C- Z; y8 C const double MaxError=0.0000000001, MaxCount=100000;
3 y2 F- ?( N, B9 k double x1,x2,Error;
. b: b% e5 t( \ _8 _, Y int num;
) N+ j* P, y) F) }" {* C$ o9 X5 [ x1 = 3*x;9 T1 \* I% X% V, x+ `
x1 = exp(log10(x1)/3);
6 q0 I, Z! k1 K& B Error =1;
# M7 ]- i: b1 Y2 }& C9 c num = 0;
& ~5 w. l5 ]1 v! Q2 g' p$ F! P while ((Error > MaxError) && (num < MaxCount))
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x2 = acos(sin(x1)/(x+x1));" J& T" [2 x2 ]/ N! p
Error = fabs(x2 -x1);
) U, u. l; [: b# \ num++;
# L- I+ D* L3 e/ @ x1 = x2;
4 U/ P" `6 @" C" X) T) D }
* B* x; x: k2 H1 H return(x1);
* k( W# T( {1 Z/ I% g}
9 `/ q/ F" ], Q, a& ]. y****************" Y9 d) Q0 F$ A! k3 b" s
程序运行界面参考附图! |
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