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#include "f2c.h"
#ifdef KR_headers
double log(), f__cabs(), atan2();
VOID z_log(r, z) doublecomplex *r, *z;
#else
#undef abs
#include "math.h"
extern double f__cabs(double, double);
void z_log(doublecomplex *r, doublecomplex *z)
#endif
{
double zi = z->i, zr = z->r;
r->i = atan2(zi, zr);
r->r = log( f__cabs( zr, zi ) );
}
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