softfloat: Implement the full set of comparisons for float16

Implement them in softfloat and remove the local versions in riscv.

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <1596102747-20226-2-git-send-email-chihmin.chao@sifive.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 41 insertions, 0 deletions

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 659218b5c7..573fce99bc 100644
--- a/include/fpu/softfloat.h
+++ b/include/fpu/softfloat.h
@@ -285,6 +285,47 @@ static inline float16 float16_set_sign(float16 a, int sign)
     return make_float16((float16_val(a) & 0x7fff) | (sign << 15));
 }
 
+static inline bool float16_eq(float16 a, float16 b, float_status *s)
+{
+    return float16_compare(a, b, s) == float_relation_equal;
+}
+
+static inline bool float16_le(float16 a, float16 b, float_status *s)
+{
+    return float16_compare(a, b, s) <= float_relation_equal;
+}
+
+static inline bool float16_lt(float16 a, float16 b, float_status *s)
+{
+    return float16_compare(a, b, s) < float_relation_equal;
+}
+
+static inline bool float16_unordered(float16 a, float16 b, float_status *s)
+{
+    return float16_compare(a, b, s) == float_relation_unordered;
+}
+
+static inline bool float16_eq_quiet(float16 a, float16 b, float_status *s)
+{
+    return float16_compare_quiet(a, b, s) == float_relation_equal;
+}
+
+static inline bool float16_le_quiet(float16 a, float16 b, float_status *s)
+{
+    return float16_compare_quiet(a, b, s) <= float_relation_equal;
+}
+
+static inline bool float16_lt_quiet(float16 a, float16 b, float_status *s)
+{
+    return float16_compare_quiet(a, b, s) < float_relation_equal;
+}
+
+static inline bool float16_unordered_quiet(float16 a, float16 b,
+                                           float_status *s)
+{
+    return float16_compare_quiet(a, b, s) == float_relation_unordered;
+}
+
 #define float16_zero make_float16(0)
 #define float16_half make_float16(0x3800)
 #define float16_one make_float16(0x3c00)