1999-09-18 10:51:31 +00:00
|
|
|
#include "f2c.h"
|
|
|
|
|
|
|
|
|
|
#ifdef KR_headers
|
|
|
|
|
double log(), f__cabs(), atan2();
|
1999-09-19 05:59:11 +00:00
|
|
|
VOID z_log(r, z) doublecomplex *r, *z;
|
1999-09-18 10:51:31 +00:00
|
|
|
#else
|
|
|
|
|
#undef abs
|
1999-09-19 05:59:11 +00:00
|
|
|
#include "math.h"
|
1999-09-18 10:51:31 +00:00
|
|
|
extern double f__cabs(double, double);
|
1999-09-19 05:59:11 +00:00
|
|
|
void z_log(doublecomplex *r, doublecomplex *z)
|
1999-09-18 10:51:31 +00:00
|
|
|
#endif
|
|
|
|
|
{
|
1999-09-19 05:59:11 +00:00
|
|
|
double zi = z->i, zr = z->r;
|
|
|
|
|
r->i = atan2(zi, zr);
|
|
|
|
|
r->r = log( f__cabs( zr, zi ) );
|
|
|
|
|
}
|
