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fpu: Handle all rounding modes in partsN_uncanon_normal

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Missed float_round_nearest_even_max when recomputing round.

CC: qemu-stable@nongnu.org
Fixes: 72330260cd ("softfloat: Add float_round_nearest_even_max")
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Message-id: 20260608190155.637067-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson
2026-06-08 12:01:54 -07:00
committed by Peter Maydell
parent 43fad6b3b2
commit a6a1f92d5a
1 changed files with 1 additions and 0 deletions
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fpu/softfloat-parts.c.inc
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@@ -437,6 +437,7 @@ static void partsN(uncanon_normal)(FloatPartsN *p, float_status *s,
/* Need to recompute round-to-even/round-to-odd. */
switch (get_float_rounding_mode(s)) {
case float_round_nearest_even:
case float_round_nearest_even_max:
if (N > 64 && frac_lsb == 0) {
inc = ((p->frac_hi & 1) ||
(p->frac_lo & round_mask) != frac_lsbm1