From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: alex.bennee@linaro.org, david@redhat.com
Subject: [PATCH v2 03/28] softfloat: Move uint_to_float to softfloat-parts.c.inc
Date: Tue, 25 May 2021 08:06:41 -0700 [thread overview]
Message-ID: <20210525150706.294968-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210525150706.294968-1-richard.henderson@linaro.org>
Rename to parts$N_uint_to_float.
Reimplement uint64_to_float128 with FloatParts128.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
fpu/softfloat.c | 83 ++++++++++++++++-----------------------
fpu/softfloat-parts.c.inc | 23 +++++++++++
2 files changed, 56 insertions(+), 50 deletions(-)
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 6404a2997f..db14bd09aa 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -857,6 +857,14 @@ static void parts128_sint_to_float(FloatParts128 *p, int64_t a,
#define parts_sint_to_float(P, I, Z, S) \
PARTS_GENERIC_64_128(sint_to_float, P)(P, I, Z, S)
+static void parts64_uint_to_float(FloatParts64 *p, uint64_t a,
+ int scale, float_status *s);
+static void parts128_uint_to_float(FloatParts128 *p, uint64_t a,
+ int scale, float_status *s);
+
+#define parts_uint_to_float(P, I, Z, S) \
+ PARTS_GENERIC_64_128(uint_to_float, P)(P, I, Z, S)
+
/*
* Helper functions for softfloat-parts.c.inc, per-size operations.
*/
@@ -3102,35 +3110,15 @@ float128 int32_to_float128(int32_t a, float_status *status)
}
/*
- * Unsigned Integer to float conversions
- *
- * Returns the result of converting the unsigned integer `a' to the
- * floating-point format. The conversion is performed according to the
- * IEC/IEEE Standard for Binary Floating-Point Arithmetic.
+ * Unsigned Integer to floating-point conversions
*/
-static FloatParts64 uint_to_float(uint64_t a, int scale, float_status *status)
-{
- FloatParts64 r = { .sign = false };
- int shift;
-
- if (a == 0) {
- r.cls = float_class_zero;
- } else {
- scale = MIN(MAX(scale, -0x10000), 0x10000);
- shift = clz64(a);
- r.cls = float_class_normal;
- r.exp = DECOMPOSED_BINARY_POINT - shift + scale;
- r.frac = a << shift;
- }
-
- return r;
-}
-
float16 uint64_to_float16_scalbn(uint64_t a, int scale, float_status *status)
{
- FloatParts64 pa = uint_to_float(a, scale, status);
- return float16_round_pack_canonical(&pa, status);
+ FloatParts64 p;
+
+ parts_uint_to_float(&p, a, scale, status);
+ return float16_round_pack_canonical(&p, status);
}
float16 uint32_to_float16_scalbn(uint32_t a, int scale, float_status *status)
@@ -3165,8 +3153,10 @@ float16 uint8_to_float16(uint8_t a, float_status *status)
float32 uint64_to_float32_scalbn(uint64_t a, int scale, float_status *status)
{
- FloatParts64 pa = uint_to_float(a, scale, status);
- return float32_round_pack_canonical(&pa, status);
+ FloatParts64 p;
+
+ parts_uint_to_float(&p, a, scale, status);
+ return float32_round_pack_canonical(&p, status);
}
float32 uint32_to_float32_scalbn(uint32_t a, int scale, float_status *status)
@@ -3196,8 +3186,10 @@ float32 uint16_to_float32(uint16_t a, float_status *status)
float64 uint64_to_float64_scalbn(uint64_t a, int scale, float_status *status)
{
- FloatParts64 pa = uint_to_float(a, scale, status);
- return float64_round_pack_canonical(&pa, status);
+ FloatParts64 p;
+
+ parts_uint_to_float(&p, a, scale, status);
+ return float64_round_pack_canonical(&p, status);
}
float64 uint32_to_float64_scalbn(uint32_t a, int scale, float_status *status)
@@ -3225,15 +3217,12 @@ float64 uint16_to_float64(uint16_t a, float_status *status)
return uint64_to_float64_scalbn(a, 0, status);
}
-/*
- * Returns the result of converting the unsigned integer `a' to the
- * bfloat16 format.
- */
-
bfloat16 uint64_to_bfloat16_scalbn(uint64_t a, int scale, float_status *status)
{
- FloatParts64 pa = uint_to_float(a, scale, status);
- return bfloat16_round_pack_canonical(&pa, status);
+ FloatParts64 p;
+
+ parts_uint_to_float(&p, a, scale, status);
+ return bfloat16_round_pack_canonical(&p, status);
}
bfloat16 uint32_to_bfloat16_scalbn(uint32_t a, int scale, float_status *status)
@@ -3261,6 +3250,14 @@ bfloat16 uint16_to_bfloat16(uint16_t a, float_status *status)
return uint64_to_bfloat16_scalbn(a, 0, status);
}
+float128 uint64_to_float128(uint64_t a, float_status *status)
+{
+ FloatParts128 p;
+
+ parts_uint_to_float(&p, a, 0, status);
+ return float128_round_pack_canonical(&p, status);
+}
+
/* Float Min/Max */
/* min() and max() functions. These can't be implemented as
* 'compare and pick one input' because that would mishandle
@@ -4972,20 +4969,6 @@ floatx80 int64_to_floatx80(int64_t a, float_status *status)
}
-/*----------------------------------------------------------------------------
-| Returns the result of converting the 64-bit unsigned integer `a'
-| to the quadruple-precision floating-point format. The conversion is performed
-| according to the IEC/IEEE Standard for Binary Floating-Point Arithmetic.
-*----------------------------------------------------------------------------*/
-
-float128 uint64_to_float128(uint64_t a, float_status *status)
-{
- if (a == 0) {
- return float128_zero;
- }
- return normalizeRoundAndPackFloat128(0, 0x406E, 0, a, status);
-}
-
/*----------------------------------------------------------------------------
| Returns the result of converting the single-precision floating-point value
| `a' to the extended double-precision floating-point format. The conversion
diff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc
index 8102de1307..f3c4f8c8d2 100644
--- a/fpu/softfloat-parts.c.inc
+++ b/fpu/softfloat-parts.c.inc
@@ -913,3 +913,26 @@ static void partsN(sint_to_float)(FloatPartsN *p, int64_t a,
p->exp = DECOMPOSED_BINARY_POINT - shift + scale;
p->frac_hi = f << shift;
}
+
+/*
+ * Unsigned Integer to float conversions
+ *
+ * Returns the result of converting the unsigned integer `a' to the
+ * floating-point format. The conversion is performed according to the
+ * IEC/IEEE Standard for Binary Floating-Point Arithmetic.
+ */
+static void partsN(uint_to_float)(FloatPartsN *p, uint64_t a,
+ int scale, float_status *status)
+{
+ memset(p, 0, sizeof(*p));
+
+ if (a == 0) {
+ p->cls = float_class_zero;
+ } else {
+ int shift = clz64(a);
+ scale = MIN(MAX(scale, -0x10000), 0x10000);
+ p->cls = float_class_normal;
+ p->exp = DECOMPOSED_BINARY_POINT - shift + scale;
+ p->frac_hi = a << shift;
+ }
+}
--
2.25.1
next prev parent reply other threads:[~2021-05-25 16:22 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 15:06 [PATCH v2 00/28] Convert floatx80 and float128 to FloatParts Richard Henderson
2021-05-25 15:06 ` [PATCH v2 01/28] softfloat: Move round_to_uint_and_pack to softfloat-parts.c.inc Richard Henderson
2021-06-02 11:12 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 02/28] softfloat: Move int_to_float " Richard Henderson
2021-05-26 13:34 ` David Hildenbrand
2021-06-02 11:14 ` Alex Bennée
2021-05-25 15:06 ` Richard Henderson [this message]
2021-05-26 13:36 ` [PATCH v2 03/28] softfloat: Move uint_to_float " David Hildenbrand
2021-06-02 11:31 ` Alex Bennée
2021-06-02 16:28 ` Richard Henderson
2021-05-25 15:06 ` [PATCH v2 04/28] softfloat: Move minmax_flags " Richard Henderson
2021-05-26 13:45 ` David Hildenbrand
2021-06-02 20:36 ` Alex Bennée
2021-06-02 22:23 ` Richard Henderson
2021-06-02 22:29 ` Richard Henderson
2021-05-25 15:06 ` [PATCH v2 05/28] softfloat: Move compare_floats " Richard Henderson
2021-06-03 9:00 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 06/28] softfloat: Move scalbn_decomposed " Richard Henderson
2021-06-03 9:01 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 07/28] softfloat: Move sqrt_float " Richard Henderson
2021-06-03 9:17 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 08/28] softfloat: Split out parts_uncanon_normal Richard Henderson
2021-06-03 9:22 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 09/28] softfloat: Reduce FloatFmt Richard Henderson
2021-06-03 9:23 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 10/28] softfloat: Introduce Floatx80RoundPrec Richard Henderson
2021-06-03 9:26 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 11/28] softfloat: Adjust parts_uncanon_normal for floatx80 Richard Henderson
2021-06-03 11:58 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 12/28] tests/fp/fp-test: Reverse order of floatx80 precision tests Richard Henderson
2021-05-25 15:06 ` [PATCH v2 13/28] softfloat: Convert floatx80_add/sub to FloatParts Richard Henderson
2021-06-03 14:23 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 14/28] softfloat: Convert floatx80_mul " Richard Henderson
2021-06-03 14:23 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 15/28] softfloat: Convert floatx80_div " Richard Henderson
2021-06-03 14:23 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 16/28] softfloat: Convert floatx80_sqrt " Richard Henderson
2021-06-03 14:24 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 17/28] softfloat: Convert floatx80_round " Richard Henderson
2021-06-03 14:25 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 18/28] softfloat: Convert floatx80_round_to_int " Richard Henderson
2021-06-03 14:26 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 19/28] softfloat: Convert integer to floatx80 " Richard Henderson
2021-06-03 14:26 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 20/28] softfloat: Convert floatx80 float conversions " Richard Henderson
2021-06-03 14:26 ` Alex Bennée
2021-05-25 15:06 ` [PATCH v2 21/28] softfloat: Convert floatx80 to integer " Richard Henderson
2021-06-03 14:27 ` Alex Bennée
2021-05-25 15:07 ` [PATCH v2 22/28] softfloat: Convert floatx80_scalbn " Richard Henderson
2021-06-03 14:34 ` Alex Bennée
2021-05-25 15:07 ` [PATCH v2 23/28] softfloat: Convert floatx80 compare " Richard Henderson
2021-06-03 14:34 ` Alex Bennée
2021-05-25 15:07 ` [PATCH v2 24/28] softfloat: Convert float32_exp2 " Richard Henderson
2021-06-03 14:44 ` Alex Bennée
2021-05-25 15:07 ` [PATCH v2 25/28] softfloat: Move floatN_log2 to softfloat-parts.c.inc Richard Henderson
2021-06-02 15:28 ` Alex Bennée
2021-05-25 15:07 ` [PATCH v2 26/28] softfloat: Convert modrem operations to FloatParts Richard Henderson
2021-06-03 14:48 ` Alex Bennée
2021-05-25 15:07 ` [PATCH v2 27/28] tests/fp: Enable more tests Richard Henderson
2021-05-25 15:07 ` [PATCH v2 28/28] softfloat: Use hard-float for {u}int64_to_float{32, 64} Richard Henderson
2021-06-03 14:57 ` [PATCH v2 28/28] softfloat: Use hard-float for {u}int64_to_float{32,64} Alex Bennée
2021-05-25 16:51 ` [PATCH v2 00/28] Convert floatx80 and float128 to FloatParts no-reply
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