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softfloat: Implement float128_(min|minnum|minnummag|max|maxnum|maxnummag)

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The float128 implementation is straight-forward.
Unfortuantely, we don't have any tests we can simply adjust/unlock.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210517142739.38597-24-david@redhat.com>
[rth: Update for changed parts_minmax return value]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
David Hildenbrand 2021-05-17 16:27:36 +02:00 committed by Richard Henderson
parent e1c4667a9b
commit ceebc129e5
2 changed files with 19 additions and 0 deletions
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13
fpu/softfloat.c
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@ -3324,6 +3324,18 @@ static float64 float64_minmax(float64 a, float64 b, float_status *s, int flags)
return float64_round_pack_canonical(pr, s);
}
static float128 float128_minmax(float128 a, float128 b,
float_status *s, int flags)
{
FloatParts128 pa, pb, *pr;
float128_unpack_canonical(&pa, a, s);
float128_unpack_canonical(&pb, b, s);
pr = parts_minmax(&pa, &pb, s, flags);
return float128_round_pack_canonical(pr, s);
}
#define MINMAX_1(type, name, flags) \
type type##_##name(type a, type b, float_status *s) \
{ return type##_minmax(a, b, s, flags); }
@ -3340,6 +3352,7 @@ MINMAX_2(float16)
MINMAX_2(bfloat16)
MINMAX_2(float32)
MINMAX_2(float64)
MINMAX_2(float128)
#undef MINMAX_1
#undef MINMAX_2

6
include/fpu/softfloat.h
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@ -1204,6 +1204,12 @@ float128 float128_rem(float128, float128, float_status *status);
float128 float128_sqrt(float128, float_status *status);
FloatRelation float128_compare(float128, float128, float_status *status);
FloatRelation float128_compare_quiet(float128, float128, float_status *status);
float128 float128_min(float128, float128, float_status *status);
float128 float128_max(float128, float128, float_status *status);
float128 float128_minnum(float128, float128, float_status *status);
float128 float128_maxnum(float128, float128, float_status *status);
float128 float128_minnummag(float128, float128, float_status *status);
float128 float128_maxnummag(float128, float128, float_status *status);
bool float128_is_quiet_nan(float128, float_status *status);
bool float128_is_signaling_nan(float128, float_status *status);
float128 float128_silence_nan(float128, float_status *status);