softfloat: Convert float128_default_nan to parts
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/fpu/softfloat-specialize.c.inc b/fpu/softfloat-specialize.c.inc
index 5b85b84..c895733 100644
--- a/fpu/softfloat-specialize.c.inc
+++ b/fpu/softfloat-specialize.c.inc
@@ -171,6 +171,25 @@
};
}
+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.
