3 extern void sig_die (char *, int);
5 z_div (doublecomplex * c, doublecomplex * a, doublecomplex * b)
10 if ((abr = b->r) < 0.)
12 if ((abi = b->i) < 0.)
18 #ifdef IEEE_COMPLEX_DIVIDE
19 if (a->i != 0 || a->r != 0)
21 c->i = c->r = abi / abr;
24 sig_die ("complex division by zero", 1);
28 den = b->i * (1 + ratio * ratio);
29 cr = (a->r * ratio + a->i) / den;
30 c->i = (a->i * ratio - a->r) / den;
36 den = b->r * (1 + ratio * ratio);
37 cr = (a->r + a->i * ratio) / den;
38 c->i = (a->i - a->r * ratio) / den;