/********************************************************************/
/* Copyright (c) 2017 System fugen G.K. and Yuzi Mizuno          */
/* All rights reserved.                                             */
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// BVI2SL computes the intersection point of two 2D straight lines, 
// (P1(2),DC1(2)) and (P2(2),DC2(2)). 
// **** INPUT *** 
// P1(2),DC1(2)......1st straight line, P1(2) is a point and DC1(2) is 
//          the directional cosine. 
//          The straight line can be expressed as follows using 
//          parameter t; X(t)=P1(1)+DC1(1)*t 
//                       Y(t)=P1(2)+DC1(2)*t 
// P2(2),DC2(2)......is 2nd straight line. 
// **** OUTPUT *** 
//    P(2),T1,T2......are intersection point coordinate data P(.) 
//          and the parameter value of 1st(T1) and 2nd line(T2). 
void bvi2sl_(
	const double *p1,const double *dc1,const double *p2,const double *dc2,
	double *p, double *t1, double *t2
);