Subversion Repositories openrisc_2011-10-31

/* PR target/10114 */

/* Originator: James Troup <james@nocrew.org> */

/* { dg-do compile { target sparc-*-linux* } } */

/* { dg-options "-g -O1" } */

extern __inline double sqrt (double __x)

{

  register double __r;

  __asm ("fsqrtd %1,%0" : "=f" (__r) : "f" (__x));

  return __r;

}

static double our_skew, max_update_skew;

static double Sqr(double x)

{

  return x*x;

}

void REF_SetReference(double skew)

{

  double previous_skew, new_skew;

  double old_weight, new_weight, sum_weight;

  double delta_freq1, delta_freq2;

  double skew1, skew2;

  previous_skew = our_skew;

  skew1 = sqrt((Sqr(delta_freq1) * old_weight + Sqr(delta_freq2) * new_weight) / sum_weight);

  skew2 = (previous_skew * old_weight + new_skew * new_weight) / sum_weight;

  our_skew = skew1 + skew2;

}