Function xsum_small_negate

xs/sources/xsum.c:1107–1120

/* NEGATE THE VALUE IN A SMALL ACCUMULATOR. */

void xsum_small_negate (xsum_small_accumulator *restrict sacc)
{
  int i;

  if (xsum_debug) c_printf("\nNEGATING A SMALL ACCUMULATOR\n");

  for (i = 0; i < XSUM_SCHUNKS; i++)
  { sacc->chunk[i] = -sacc->chunk[i];
  }

  if (sacc->Inf != 0)
  { sacc->Inf ^= XSUM_SIGN_MASK;
  }
}


/* RETURN THE RESULT OF ROUNDING A SMALL ACCUMULATOR.  The rounding mode