Signed-off-by: LIU Zhiwei
---
fpu/softfloat.c | 223
include/fpu/softfloat.h | 48 +
2 files changed, 271 insertions(+)
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 9a58107be3..b6002d6856 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -2014,6 +2014,34 @@ float32 float64_to_float32(float64 a, float_status *s)
return float32_round_pack_canonical(pr, s);
}
+float32 bfloat16_to_float32(bfloat16 a, float_status *s)
+{
+FloatParts p = bfloat16_unpack_canonical(a, s);
+FloatParts pr = float_to_float(p, _params, s);
+return float32_round_pack_canonical(pr, s);
+}
+
+float64 bfloat16_to_float64(bfloat16 a, float_status *s)
+{
+FloatParts p = bfloat16_unpack_canonical(a, s);
+FloatParts pr = float_to_float(p, _params, s);
+return float64_round_pack_canonical(pr, s);
+}
+
+bfloat16 float32_to_bfloat16(float32 a, float_status *s)
+{
+FloatParts p = float32_unpack_canonical(a, s);
+FloatParts pr = float_to_float(p, _params, s);
+return bfloat16_round_pack_canonical(pr, s);
+}
+
+bfloat16 float64_to_bfloat16(float64 a, float_status *s)
+{
+FloatParts p = float64_unpack_canonical(a, s);
+FloatParts pr = float_to_float(p, _params, s);
+return bfloat16_round_pack_canonical(pr, s);
+}
+
/*
* Rounds the floating-point value `a' to an integer, and returns the
* result as a floating-point value. The operation is performed
@@ -2143,6 +2171,18 @@ float64 float64_round_to_int(float64 a, float_status *s)
return float64_round_pack_canonical(pr, s);
}
+/*
+ * Rounds the brain floating-point value `a' to an integer, and returns the
+ * result as a brain floating-point value.
+ */
+
+bfloat16 bfloat16_round_to_int(bfloat16 a, float_status *s)
+{
+FloatParts pa = bfloat16_unpack_canonical(a, s);
+FloatParts pr = round_to_int(pa, s->float_rounding_mode, 0, s);
+return bfloat16_round_pack_canonical(pr, s);
+}
+
/*
* Returns the result of converting the floating-point value `a' to
* the two's complement integer format. The conversion is performed
@@ -2353,6 +2393,62 @@ int64_t float64_to_int64_round_to_zero(float64 a,
float_status *s)
return float64_to_int64_scalbn(a, float_round_to_zero, 0, s);
}
+/*
+ * Returns the result of converting the floating-point value `a' to
+ * the two's complement integer format.
+ */
+
+int16_t bfloat16_to_int16_scalbn(bfloat16 a, int rmode, int scale,
+ float_status *s)
+{
+return round_to_int_and_pack(bfloat16_unpack_canonical(a, s),
+ rmode, scale, INT16_MIN, INT16_MAX, s);
+}
+
+int32_t bfloat16_to_int32_scalbn(bfloat16 a, int rmode, int scale,
+ float_status *s)
+{
+return round_to_int_and_pack(bfloat16_unpack_canonical(a, s),
+ rmode, scale, INT32_MIN, INT32_MAX, s);
+}
+
+int64_t bfloat16_to_int64_scalbn(bfloat16 a, int rmode, int scale,
+ float_status *s)
+{
+return round_to_int_and_pack(bfloat16_unpack_canonical(a, s),
+ rmode, scale, INT64_MIN, INT64_MAX, s);
+}
+
+int16_t bfloat16_to_int16(bfloat16 a, float_status *s)
+{
+return bfloat16_to_int16_scalbn(a, s->float_rounding_mode, 0, s);
+}
+
+int32_t bfloat16_to_int32(bfloat16 a, float_status *s)
+{
+return bfloat16_to_int32_scalbn(a, s->float_rounding_mode, 0, s);
+}
+
+int64_t bfloat16_to_int64(bfloat16 a, float_status *s)
+{
+return bfloat16_to_int64_scalbn(a, s->float_rounding_mode, 0, s);
+}
+
+int16_t bfloat16_to_int16_round_to_zero(bfloat16 a, float_status *s)
+{
+return bfloat16_to_int16_scalbn(a, float_round_to_zero, 0, s);
+}
+
+int32_t bfloat16_to_int32_round_to_zero(bfloat16 a, float_status *s)
+{
+return bfloat16_to_int32_scalbn(a, float_round_to_zero, 0, s);
+}
+
+int64_t bfloat16_to_int64_round_to_zero(bfloat16 a, float_status *s)
+{
+return bfloat16_to_int64_scalbn(a, float_round_to_zero, 0, s);
+}
+
/*
* Returns the result of converting the floating-point value `a' to
* the unsigned integer format. The conversion is performed according
@@ -2566,6 +2662,62 @@ uint64_t float64_to_uint64_round_to_zero(float64 a,
float_status *s)
return float64_to_uint64_scalbn(a, float_round_to_zero, 0, s);
}
+/*
+ * Returns the result of converting the brain floating-point value `a' to
+ * the unsigned integer format.
+ */
+
+uint16_t bfloat16_to_uint16_scalbn(bfloat16 a, int rmode, int scale,
+ float_status *s)
+{
+return round_to_uint_and_pack(bfloat16_unpack_canonical(a, s),
+ rmode, scale, UINT16_MAX, s);
+}
+
+uint32_t bfloat16_to_uint32_scalbn(bfloat16 a, int rmode, int scale,
+ float_status *s)
+{
+return round_to_uint_and_pack(bfloat16_unpack_canonical(a, s),
+ rmode, scale, UINT32_MAX, s);
