1 #include "f2c.h"
2 
3 #ifdef KR_headers
4 extern double log(), f__cabs(), atan2();
c_log(r,z)5 VOID c_log(r, z) complex *r, *z;
6 #else
7 #undef abs
8 #include "mathh.h"
9 extern double f__cabs(double, double);
10 
11 void c_log(complex *r, complex *z)
12 #endif
13 {
14 r->i = atan2(z->i, z->r);
15 r->r = log( f__cabs(z->r, z->i) );
16 }
17