[PATCH v2 22/45] fpu: Add float16 comparison functions

[Peter Maydell]

Add comparison functions for float16 to match the existing float32
and float64 ones:

 float16_eq()
 float16_le()
 float16_lt()
 float16_unordered()
 float16_eq_quiet()
 float16_le_quiet()
 float16_lt_quiet()
 float16_unordered_quiet()

These are all just convenience wrappers around float16_compare() and
float16_compare_quiet().  We will want these for AArch23 fp16
support.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 include/fpu/softfloat.h | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h
index 659218b5c78..573fce99bc6 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)
-- 
2.20.1