Python/hypot.c

   1 /* hypot() replacement */
   2
   3 #include "Python.h"
   4
   5 #ifndef HAVE_HYPOT
   6 double hypot(double x, double y)
   7 {
   8         double yx;
   9
  10         x = fabs(x);
  11         y = fabs(y);
  12         if (x < y) {
  13                 double temp = x;
  14                 x = y;
  15                 y = temp;
  16         }
  17         if (x == 0.)
  18                 return 0.;
  19         else {
  20                 yx = y/x;
  21                 return x*sqrt(1.+yx*yx);
  22         }
  23 }
  24 #endif /* HAVE_HYPOT */
  25