mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-27 08:59:10 +08:00
18 lines
317 B
C
18 lines
317 B
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
|
|
{
|
|
double zi, zr;
|
|
r->i = atan2(zi = z->i, zr = z->r);
|
|
r->r = log( f__cabs(zr, zi) );
|
|
}
|