From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56781) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dPc7C-0007Eh-8q for qemu-devel@nongnu.org; Mon, 26 Jun 2017 18:04:15 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dPc79-0005Cv-44 for qemu-devel@nongnu.org; Mon, 26 Jun 2017 18:04:14 -0400 Received: from mout.kundenserver.de ([217.72.192.75]:58590) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dPc78-0005By-QL for qemu-devel@nongnu.org; Mon, 26 Jun 2017 18:04:11 -0400 From: Laurent Vivier Date: Tue, 27 Jun 2017 00:03:27 +0200 Message-Id: <20170626220330.6785-5-laurent@vivier.eu> In-Reply-To: <20170626220330.6785-1-laurent@vivier.eu> References: <20170626220330.6785-1-laurent@vivier.eu> Subject: [Qemu-devel] [PATCH v2 4/7] softfloat: define floatx80_round() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Aurelien Jarno , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Richard Henderson , Laurent Vivier Add a function to round a floatx80 to the defined precision (floatx80_rounding_precision) Signed-off-by: Laurent Vivier Reviewed-by: Richard Henderson --- fpu/softfloat.c | 15 +++++++++++++++ include/fpu/softfloat.h | 1 + 2 files changed, 16 insertions(+) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 7af14e2..e9bf359 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -5086,6 +5086,21 @@ float128 floatx80_to_float128(floatx80 a, float_status *status) } /*---------------------------------------------------------------------------- +| Rounds the extended double-precision floating-point value `a' +| and returns the result as an extended double-precision floating-point +| value. The operation is performed according to the IEC/IEEE Standard for +| Binary Floating-Point Arithmetic. +*----------------------------------------------------------------------------*/ + +floatx80 floatx80_round(floatx80 a, float_status *status) +{ + return roundAndPackFloatx80(status->floatx80_rounding_precision, + extractFloatx80Sign(a), + extractFloatx80Exp(a), + extractFloatx80Frac(a), 0, status); +} + +/*---------------------------------------------------------------------------- | Rounds the extended double-precision floating-point value `a' to an integer, | and returns the result as an extended quadruple-precision floating-point | value. The operation is performed according to the IEC/IEEE Standard for diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index f1288ef..d9689ec 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -621,6 +621,7 @@ float128 floatx80_to_float128(floatx80, float_status *status); /*---------------------------------------------------------------------------- | Software IEC/IEEE extended double-precision operations. *----------------------------------------------------------------------------*/ +floatx80 floatx80_round(floatx80 a, float_status *status); floatx80 floatx80_round_to_int(floatx80, float_status *status); floatx80 floatx80_add(floatx80, floatx80, float_status *status); floatx80 floatx80_sub(floatx80, floatx80, float_status *status); -- 2.9.4