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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:9 j x+ d2 x1 q# G: c: x( {7 ]2 K/ F" D
; n# y! P3 ~, b7 k- k& f) H//自定义反渐开线函数
: d1 k$ ~0 a+ ?$ _double __fastcall TForm_Inv::ArcInv(double x)
7 Y6 u! M9 x7 A( J: {/ m( q- _* D{
6 M& {& Y: n3 [1 O( t9 D5 B const double MaxError=0.0000000001, MaxCount=100000;1 J! O, H8 U% v3 E3 ~* b6 d7 a
double x1,x2,Error;/ t; @: `8 U% P& n" e
int num;
% {% s1 V" W# b) ~) u x1 = 3*x;* M. e* G, m8 j2 h+ u
x1 = exp(log10(x1)/3); f$ [! U5 J+ W0 E0 E
Error =1;
8 B# e' U! u: d- \$ |! ~ num = 0;$ }( {' w5 g2 b x4 [. [1 _$ v
while ((Error > MaxError) && (num < MaxCount))
% |# C0 Z; r4 Z0 P! Y { x& L$ Q+ r% I3 I0 _8 a0 u
x2 = acos(sin(x1)/(x+x1));! M; r% L$ V0 t; J4 ?7 L8 y+ V* ~3 B
Error = fabs(x2 -x1);
$ J6 n/ K9 A/ T. N3 H/ r num++;( E. P: @ ?; s: b E, ]
x1 = x2;$ n+ ~ w1 W h2 p
}; ^! `) \3 s0 u
return(x1);4 {) Q3 ?, C6 {1 U
}
1 o8 P0 S# i0 [3 T/ x9 u t0 ~; E****************
4 J% Z; ~8 E9 I! I. W0 s程序运行界面参考附图! |
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