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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id c125sm22301879pfa.119.2020.07.22.02.22.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Jul 2020 02:22:29 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v2 70/76] softfloat: add fp16 and uint8/int8 interconvert functions Date: Wed, 22 Jul 2020 17:16:33 +0800 Message-Id: <20200722091641.8834-71-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200722091641.8834-1-frank.chang@sifive.com> References: <20200722091641.8834-1-frank.chang@sifive.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=frank.chang@sifive.com; helo=mail-pl1-x632.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Frank Chang , Peter Maydell , =?utf-8?q?Alex_Benn=C3=A9e?= , Aurelien Jarno Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Frank Chang Signed-off-by: Frank Chang Reviewed-by: Alex Bennée --- fpu/softfloat.c | 34 ++++++++++++++++++++++++++++++++++ include/fpu/softfloat.h | 8 ++++++++ 2 files changed, 42 insertions(+) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index e1661f22a5..89634267db 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -2142,6 +2142,13 @@ static int64_t round_to_int_and_pack(FloatParts in, FloatRoundMode rmode, } } +int8_t float16_to_int8_scalbn(float16 a, FloatRoundMode rmode, int scale, + float_status *s) +{ + return round_to_int_and_pack(float16_unpack_canonical(a, s), + rmode, scale, INT8_MIN, INT8_MAX, s); +} + int16_t float16_to_int16_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { @@ -2205,6 +2212,11 @@ int64_t float64_to_int64_scalbn(float64 a, FloatRoundMode rmode, int scale, rmode, scale, INT64_MIN, INT64_MAX, s); } +int8_t float16_to_int8(float16 a, float_status *s) +{ + return float16_to_int8_scalbn(a, s->float_rounding_mode, 0, s); +} + int16_t float16_to_int16(float16 a, float_status *s) { return float16_to_int16_scalbn(a, s->float_rounding_mode, 0, s); @@ -2355,6 +2367,13 @@ static uint64_t round_to_uint_and_pack(FloatParts in, FloatRoundMode rmode, } } +uint8_t float16_to_uint8_scalbn(float16 a, FloatRoundMode rmode, int scale, + float_status *s) +{ + return round_to_uint_and_pack(float16_unpack_canonical(a, s), + rmode, scale, UINT8_MAX, s); +} + uint16_t float16_to_uint16_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { @@ -2418,6 +2437,11 @@ uint64_t float64_to_uint64_scalbn(float64 a, FloatRoundMode rmode, int scale, rmode, scale, UINT64_MAX, s); } +uint8_t float16_to_uint8(float16 a, float_status *s) +{ + return float16_to_uint8_scalbn(a, s->float_rounding_mode, 0, s); +} + uint16_t float16_to_uint16(float16 a, float_status *s) { return float16_to_uint16_scalbn(a, s->float_rounding_mode, 0, s); @@ -2572,6 +2596,11 @@ float16 int16_to_float16(int16_t a, float_status *status) return int64_to_float16_scalbn(a, 0, status); } +float16 int8_to_float16(int8_t a, float_status *status) +{ + return int64_to_float16_scalbn(a, 0, status); +} + float32 int64_to_float32_scalbn(int64_t a, int scale, float_status *status) { FloatParts pa = int_to_float(a, scale, status); @@ -2697,6 +2726,11 @@ float16 uint16_to_float16(uint16_t a, float_status *status) return uint64_to_float16_scalbn(a, 0, status); } +float16 uint8_to_float16(uint8_t a, float_status *status) +{ + return uint64_to_float16_scalbn(a, 0, status); +} + float32 uint64_to_float32_scalbn(uint64_t a, int scale, float_status *status) { FloatParts pa = uint_to_float(a, scale, status); diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index 078cad8ad9..5700d2024b 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -136,9 +136,11 @@ float16 uint16_to_float16_scalbn(uint16_t a, int, float_status *status); float16 uint32_to_float16_scalbn(uint32_t a, int, float_status *status); float16 uint64_to_float16_scalbn(uint64_t a, int, float_status *status); +float16 int8_to_float16(int8_t a, float_status *status); float16 int16_to_float16(int16_t a, float_status *status); float16 int32_to_float16(int32_t a, float_status *status); float16 int64_to_float16(int64_t a, float_status *status); +float16 uint8_to_float16(uint8_t a, float_status *status); float16 uint16_to_float16(uint16_t a, float_status *status); float16 uint32_to_float16(uint32_t a, float_status *status); float16 uint64_to_float16(uint64_t a, float_status *status); @@ -187,10 +189,13 @@ float32 float16_to_float32(float16, bool ieee, float_status *status); float16 float64_to_float16(float64 a, bool ieee, float_status *status); float64 float16_to_float64(float16 a, bool ieee, float_status *status); +int8_t float16_to_int8_scalbn(float16, FloatRoundMode, int, + float_status *status); int16_t float16_to_int16_scalbn(float16, FloatRoundMode, int, float_status *); int32_t float16_to_int32_scalbn(float16, FloatRoundMode, int, float_status *); int64_t float16_to_int64_scalbn(float16, FloatRoundMode, int, float_status *); +int8_t float16_to_int8(float16, float_status *status); int16_t float16_to_int16(float16, float_status *status); int32_t float16_to_int32(float16, float_status *status); int64_t float16_to_int64(float16, float_status *status); @@ -199,6 +204,8 @@ int16_t float16_to_int16_round_to_zero(float16, float_status *status); int32_t float16_to_int32_round_to_zero(float16, float_status *status); int64_t float16_to_int64_round_to_zero(float16, float_status *status); +uint8_t float16_to_uint8_scalbn(float16 a, FloatRoundMode, + int, float_status *status); uint16_t float16_to_uint16_scalbn(float16 a, FloatRoundMode, int, float_status *status); uint32_t float16_to_uint32_scalbn(float16 a, FloatRoundMode, @@ -206,6 +213,7 @@ uint32_t float16_to_uint32_scalbn(float16 a, FloatRoundMode, uint64_t float16_to_uint64_scalbn(float16 a, FloatRoundMode, int, float_status *status); +uint8_t float16_to_uint8(float16 a, float_status *status); uint16_t float16_to_uint16(float16 a, float_status *status); uint32_t float16_to_uint32(float16 a, float_status *status); uint64_t float16_to_uint64(float16 a, float_status *status);