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发表于 2009-11-26 08:51:36
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给楼主一份反渐开线函数的C++源代码:+ u7 u4 {; n4 Y) E m o
/ u& n3 S/ Z; G# B& O* s' I0 \//自定义反渐开线函数9 s$ [6 f% D7 n
double __fastcall TForm_Inv::ArcInv(double x)% N- }4 `6 \/ @( g: m8 |- X
{
4 K: X- b2 y2 K/ F3 C5 a$ d' T const double MaxError=0.0000000001, MaxCount=100000;
' d+ \! }& z( q }/ g; E* c( x double x1,x2,Error;
+ R+ @" Z) w: p2 m# w& b int num;+ Z2 J8 |/ z+ r5 W d9 t# Y8 p
x1 = 3*x;
! O5 z3 I& C) I' h( r) X! } x1 = exp(log10(x1)/3);" [$ Z8 N& k9 u5 S8 @! H* S+ H' T
Error =1;1 r ?/ l2 Z( F+ i( ^6 B" q
num = 0;
. } ^, {4 u5 d$ v+ C while ((Error > MaxError) && (num < MaxCount)), W5 o. _6 Y0 X$ U
{
/ L( w0 ]+ U C; p: M x2 = acos(sin(x1)/(x+x1));+ N$ k" S4 {4 }* g3 H
Error = fabs(x2 -x1);
# a2 n3 z$ g" [ u num++;; q$ H; y% }5 r% Y! Q, @8 a
x1 = x2;
- W L, E6 I0 n$ w# W' O+ l( @ }
$ B% X, I8 I' F8 @1 Q$ | return(x1);/ K1 B5 j- q3 v0 K
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2 V4 \6 x0 z7 U程序运行界面参考附图! |
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