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softfloat: Convert float128_default_nan to parts

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Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson
2020-10-23 16:37:01 -07:00
parent 0018b1f41b
commit e9034ea87e
2 changed files with 23 additions and 13 deletions
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19
fpu/softfloat-specialize.c.inc
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@ -171,6 +171,25 @@ static void parts64_default_nan(FloatParts64 *p, float_status *status)
};
}
static void parts128_default_nan(FloatParts128 *p, float_status *status)
{
/*
* Extrapolate from the choices made by parts64_default_nan to fill
* in the quad-floating format. If the low bit is set, assume we
* want to set all non-snan bits.
*/
FloatParts64 p64;
parts64_default_nan(&p64, status);
*p = (FloatParts128) {
.cls = float_class_qnan,
.sign = p64.sign,
.exp = INT_MAX,
.frac_hi = p64.frac,
.frac_lo = -(p64.frac & 1)
};
}
/*----------------------------------------------------------------------------
| Returns a quiet NaN from a signalling NaN for the deconstructed
| floating-point parts.