libf2c/libF77/c_log.c

   1 #include "f2c.h"
   2
   3 #undef abs
   4 #include "math.h"
   5 extern double f__cabs (double, double);
   6
   7 void
   8 c_log (complex * r, complex * z)
   9 {
  10   double zi, zr;
  11   r->i = atan2 (zi = z->i, zr = z->r);
  12   r->r = log (f__cabs (zr, zi));
  13 }