Function rint

include/my_global.h:1150–1167

*/

static inline double rint(double x)
{
  double f, i;
  f = modf(x, &i);
  /*
    All doubles with absolute values > MAX_EXACT_INTEGER are even anyway,
    no need to check it.
  */
  if (x > 0.0)
    i += (double) ((f > 0.5) || (f == 0.5 &&
                                 i <= (double) MAX_EXACT_INTEGER &&
                                 (longlong) i % 2));
  else
    i -= (double) ((f < -0.5) || (f == -0.5 &&
                                  i >= (double) -MAX_EXACT_INTEGER &&
                                  (longlong) i % 2));
  return i;
}
#endif /* HAVE_RINT */

/*