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FreeWare Collection 2
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ms_dos
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g_carc.c
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1990-06-14
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802b
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41 lines
#include <stdio.h>
#include <dos.h>
struct CIRCLEARC {
unsigned type;
int cx,cy,stx,sty,edx,edy,r;
};
extern unsigned char gds_fshift;
extern unsigned gds_wrkoff;
extern unsigned gds_wrkseg;
int g_circle_arc(int centerx,int centery,int startx,int starty,
int endx,int endy,int r)
{
union REGS reg;
struct SREGS seg;
struct {
unsigned len;
struct CIRCLEARC arc;
} gdata;
segread(&seg);
reg.h.ah=gds_fshift+0x0f;
reg.x.di=(unsigned)&gdata;
seg.ds=seg.ss;
gdata.len=16;
gdata.arc.type=0x41ee;
gdata.arc.cx=centerx;
gdata.arc.cy=centery;
gdata.arc.stx=startx;
gdata.arc.sty=starty;
gdata.arc.edx=endx;
gdata.arc.edy=endy;
gdata.arc.r=r;
reg.x.bx=gds_wrkoff;
seg.es=gds_wrkseg;
int86x(0x92,®,®,&seg);
return (int)reg.h.ah;
}