/* This is a software floating point library which can be used
for targets without hardware floating point.
- Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003,
- 2004, 2005, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1994-2014 Free Software Foundation, Inc.
This file is part of GCC.
else if (isnan (src))
{
exp = EXPMAX;
+ /* Restore the NaN's payload. */
+ fraction >>= NGARDS;
+ fraction &= QUIET_NAN - 1;
if (src->class == CLASS_QNAN || 1)
{
#ifdef QUIET_NAN_NEGATED
- fraction |= QUIET_NAN - 1;
+ /* The quiet/signaling bit remains unset. */
+ /* Make sure the fraction has a non-zero value. */
+ if (fraction == 0)
+ fraction |= QUIET_NAN - 1;
#else
+ /* Set the quiet/signaling bit. */
fraction |= QUIET_NAN;
#endif
}
{
dst->class = CLASS_SNAN;
}
- /* Keep the fraction part as the nan number */
- dst->fraction.ll = fraction;
+ /* Now that we know which kind of NaN we got, discard the
+ quiet/signaling bit, but do preserve the NaN payload. */
+ fraction &= ~QUIET_NAN;
+ dst->fraction.ll = fraction << NGARDS;
}
}
else