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[174.21.70.228]) by smtp.gmail.com with ESMTPSA id p65sm40115pfb.62.2021.06.03.14.41.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Jun 2021 14:41:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=q8lAbNppcyHGJO57X+8D3vs8Lmd+nrqoL0h5uKHL3jg=; b=f0h9kkYQtht//enboMld31rdes5z4fiTZoCk/iov1xAG5M6QK7hNQUnjZ1+jWTRAbG 5ocuDuvsM+te9U/A6WhCR0UShI0szqcX1AfOk9c/R55Gx5SQoBSP7TG78SSsv3zrJ/Db Oxeq5iGgRTa0vboZoUfcbdZJk83zXBlreINrsWl5BhDzd/ao52UtgSlvCkMM5kqsznwh EkTfvhcL/SfhHyX76HaxZhYtDGRumkfB6paahONnfa859OY2fPeo4FC+YOwgry1Ygt2X /4V3sggAmmQbOumJHaSpsG8ODYMzNF8erjQBdvzBtX7VIcLcOuTmZJnveUYjGS+XT84P oGjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=q8lAbNppcyHGJO57X+8D3vs8Lmd+nrqoL0h5uKHL3jg=; b=m9UbV+U6l2XzRjQRyJ3Y9E9tj6fNT6jW9jOZuVJF730Fp1Hw6pJ8/nC4vQBqSt4S+V sSfOxZW/8KqSM5q6HI/3N+9n6FpYl86LtI4iGhcYS8MOqlibfM0bTCIGjqKiR3HHgwH8 2joyd2ZNvcJkqjst5qDiDTQvy+GWvYkWoxg8YgK0gpwi2s/LACYMdKIgEVY8zI+92TfA LRAI31/Bf1Ih5mYanYJbkRxj9eQT1xFhEP9K8YSkwo+/2Qp8tlrlrsIm6a+yzYeuXwLU 495IMgeJGgNNnYn8t8ir3OrW+/7SqzFLNNMcpvGbnfqhBrgrHOSlQ858y2xuQKQfa+6k DB/Q== X-Gm-Message-State: AOAM531KwIPLcyIvjcWEHxr+jA38+JaUuMKeBLbIXzHwJQsP132jzXRH mVcvQXz8n9tRwIbaTnPvpK2qtesfsw7y6g== X-Google-Smtp-Source: ABdhPJy36mmdunt0y84HYGehvZmqqjU+412xtFHabcjoGxn2+wxyRXIdiaKY/KRJALYsatuCjiTcbA== X-Received: by 2002:a17:902:ee8c:b029:fe:dc5f:564 with SMTP id a12-20020a170902ee8cb02900fedc5f0564mr1176093pld.71.1622756502496; Thu, 03 Jun 2021 14:41:42 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 15/29] softfloat: Convert floatx80_mul to FloatParts Date: Thu, 3 Jun 2021 14:41:17 -0700 Message-Id: <20210603214131.629841-16-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210603214131.629841-1-richard.henderson@linaro.org> References: <20210603214131.629841-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102f; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102f.google.com 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 autolearn=ham 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: =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- fpu/softfloat.c | 76 +++++++++---------------------------------------- 1 file changed, 14 insertions(+), 62 deletions(-) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 737f5d7701..ae2e7aa274 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -1944,6 +1944,20 @@ float128_mul(float128 a, float128 b, float_status *s= tatus) return float128_round_pack_canonical(pr, status); } =20 +floatx80 QEMU_FLATTEN +floatx80_mul(floatx80 a, floatx80 b, float_status *status) +{ + FloatParts128 pa, pb, *pr; + + if (!floatx80_unpack_canonical(&pa, a, status) || + !floatx80_unpack_canonical(&pb, b, status)) { + return floatx80_default_nan(status); + } + + pr =3D parts_mul(&pa, &pb, status); + return floatx80_round_pack_canonical(pr, status); +} + /* * Fused multiply-add */ @@ -5863,68 +5877,6 @@ floatx80 floatx80_round_to_int(floatx80 a, float_sta= tus *status) =20 } =20 -/*------------------------------------------------------------------------= ---- -| Returns the result of multiplying the extended double-precision floating- -| point values `a' and `b'. The operation is performed according to the -| IEC/IEEE Standard for Binary Floating-Point Arithmetic. -*-------------------------------------------------------------------------= ---*/ - -floatx80 floatx80_mul(floatx80 a, floatx80 b, float_status *status) -{ - bool aSign, bSign, zSign; - int32_t aExp, bExp, zExp; - uint64_t aSig, bSig, zSig0, zSig1; - - if (floatx80_invalid_encoding(a) || floatx80_invalid_encoding(b)) { - float_raise(float_flag_invalid, status); - return floatx80_default_nan(status); - } - aSig =3D extractFloatx80Frac( a ); - aExp =3D extractFloatx80Exp( a ); - aSign =3D extractFloatx80Sign( a ); - bSig =3D extractFloatx80Frac( b ); - bExp =3D extractFloatx80Exp( b ); - bSign =3D extractFloatx80Sign( b ); - zSign =3D aSign ^ bSign; - if ( aExp =3D=3D 0x7FFF ) { - if ( (uint64_t) ( aSig<<1 ) - || ( ( bExp =3D=3D 0x7FFF ) && (uint64_t) ( bSig<<1 ) ) ) { - return propagateFloatx80NaN(a, b, status); - } - if ( ( bExp | bSig ) =3D=3D 0 ) goto invalid; - return packFloatx80(zSign, floatx80_infinity_high, - floatx80_infinity_low); - } - if ( bExp =3D=3D 0x7FFF ) { - if ((uint64_t)(bSig << 1)) { - return propagateFloatx80NaN(a, b, status); - } - if ( ( aExp | aSig ) =3D=3D 0 ) { - invalid: - float_raise(float_flag_invalid, status); - return floatx80_default_nan(status); - } - return packFloatx80(zSign, floatx80_infinity_high, - floatx80_infinity_low); - } - if ( aExp =3D=3D 0 ) { - if ( aSig =3D=3D 0 ) return packFloatx80( zSign, 0, 0 ); - normalizeFloatx80Subnormal( aSig, &aExp, &aSig ); - } - if ( bExp =3D=3D 0 ) { - if ( bSig =3D=3D 0 ) return packFloatx80( zSign, 0, 0 ); - normalizeFloatx80Subnormal( bSig, &bExp, &bSig ); - } - zExp =3D aExp + bExp - 0x3FFE; - mul64To128( aSig, bSig, &zSig0, &zSig1 ); - if ( 0 < (int64_t) zSig0 ) { - shortShift128Left( zSig0, zSig1, 1, &zSig0, &zSig1 ); - --zExp; - } - return roundAndPackFloatx80(status->floatx80_rounding_precision, - zSign, zExp, zSig0, zSig1, status); -} - /*------------------------------------------------------------------------= ---- | Returns the result of dividing the extended double-precision floating-po= int | value `a' by the corresponding value `b'. The operation is performed --=20 2.25.1