mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-17 09:59:10 +08:00
22 lines
352 B
C
22 lines
352 B
C
#include "f2c.h"
|
|
|
|
#ifdef KR_headers
|
|
extern double log(), f__cabs(), atan2();
|
|
VOID c_log(resx, z) complex *resx, *z;
|
|
#else
|
|
#undef abs
|
|
#include <math.h>
|
|
extern double f__cabs(double, double);
|
|
|
|
void c_log(complex *resx, complex *z)
|
|
#endif
|
|
{
|
|
complex res;
|
|
|
|
res.i = atan2(z->i, z->r);
|
|
res.r = log( f__cabs(z->r, z->i) );
|
|
|
|
resx->r = res.r;
|
|
resx->i = res.i;
|
|
}
|