24 lines
310 B
C
24 lines
310 B
C
|
|
void zbrak(fx,x1,x2,n,xb1,xb2,nb)
|
|
float (*fx)(),x1,x2,xb1[],xb2[];
|
|
int *nb,n;
|
|
{
|
|
int nbb,i;
|
|
float x,fp,fc,dx;
|
|
|
|
nbb=0;
|
|
dx=(x2-x1)/n;
|
|
fp=(*fx)(x=x1);
|
|
for (i=1;i<=n;i++) {
|
|
fc=(*fx)(x += dx);
|
|
if (fc*fp <= 0.0) {
|
|
xb1[++nbb]=x-dx;
|
|
xb2[nbb]=x;
|
|
if(*nb == nbb) return;
|
|
|
|
}
|
|
fp=fc;
|
|
}
|
|
*nb = nbb;
|
|
}
|