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

#include "f2c.h"

#ifdef KR_headers
extern double log(), f__cabs(), atan2();
VOID c_log(r, z) complex *r, *z;
#else
#undef abs
#include "math.h"
extern double f__cabs(double, double);

void c_log(complex *r, complex *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	extern double log(), f__cabs(), atan2();
	5	VOID c_log(r, z) complex r, z;
	6	#else
	7	#undef abs
	8	#include "math.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	}