14 lines
219 B
C
14 lines
219 B
C
#include "f2c.h"
|
|
|
|
#undef abs
|
|
#include "math.h"
|
|
extern double f__cabs (double, double);
|
|
|
|
void
|
|
c_log (complex * r, complex * z)
|
|
{
|
|
double zi, zr;
|
|
r->i = atan2 (zi = z->i, zr = z->r);
|
|
r->r = log (f__cabs (zr, zi));
|
|
}
|