[unix-history] / lib / libF77 / z_log.c

#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
{

r->i = atan2(z->i, z->r);
r->r = log( f__cabs( z->r, z->i ) );
}
Commit	Line	Data
547779a8 WH	1	#include "f2c.h"
	2
	3	#ifdef KR_headers
	4	double log(), f__cabs(), atan2();
	5	VOID z_log(r, z) doublecomplex r, z;
	6	#else
	7	#undef abs
	8	#include "math.h"
	9	extern double f__cabs(double, double);
	10	void z_log(doublecomplex r, doublecomplex z)
	11	#endif
	12	{
	13
	14	r->i = atan2(z->i, z->r);
	15	r->r = log( f__cabs( z->r, z->i ) );
	16	}