[PULL 05/29] softfloat: Implement float128_(min|minnum|minnummag|max|maxnum|maxnummag)

[Richard Henderson <richard.henderson@linaro.org>]

From: David Hildenbrand <david@redhat.com>

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>
---
 include/fpu/softfloat.h |  6 ++++++
 fpu/softfloat.c         | 13 +++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 53f2c2ea3c..ed32040aa9 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -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);
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index ef750e1e95..4fee5a6cb7 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -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
-- 
2.25.1