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Fri, 02 Oct 2020 05:29:29 -0700 (PDT) From: Alejandro Colomar To: mtk.manpages@gmail.com Cc: Alejandro Colomar , linux-man@vger.kernel.org, gcc-patches@gcc.gnu.org, libc-alpha@sourceware.org, fweimer@redhat.com, joseph@codesourcery.com, jwakely.gcc@gmail.com, szabolcs.nagy@arm.com Subject: [PATCH v2 1/4] system_data_types.7: Add '__int128' Date: Fri, 2 Oct 2020 14:28:20 +0200 Message-Id: <20201002122822.24277-2-colomar.6.4.3@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201001163443.106933-1-colomar.6.4.3@gmail.com> References: <20201001163443.106933-1-colomar.6.4.3@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Signed-off-by: Alejandro Colomar --- man7/system_data_types.7 | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/man7/system_data_types.7 b/man7/system_data_types.7 index e545aa1a0..5f9aa648f 100644 --- a/man7/system_data_types.7 +++ b/man7/system_data_types.7 @@ -40,6 +40,8 @@ system_data_types \- overview of system data types .\" * Description (no "Description" header) .\" A few lines describing the type. .\" +.\" * Versions (optional) +.\" .\" * Conforming to (see NOTES) .\" Format: CXY and later; POSIX.1-XXXX and later. .\" @@ -48,6 +50,44 @@ system_data_types \- overview of system data types .\" * Bugs (if any) .\" .\" * See also +.\"------------------------------------- __int128 ---------------------/ +.TP +.I __int128 +.RS +.RI [ signed ] +.I __int128 +.PP +A signed integer type +of a fixed width of exactly 128 bits. +.PP +When using GCC, +it is supported only for targets where +the compiler is able to generate efficient code for 128-bit arithmetic. +.PP +Versions: +GCC 4.6.0 and later. +.PP +Conforming to: +This is a non-standard extension, present in GCC. +It is not standardized by the C language standard nor POSIX. +.PP +Notes: +This type is available without including any header. +.PP +Bugs: +It is not possible to express an integer constant of type +.I __int128 +in implementations where +.I long long +is less than 128 bits wide. +.PP +See also the +.IR intmax_t , +.IR int N _t +and +.I unsigned __int128 +types in this page. +.RE .\"------------------------------------- aiocb ------------------------/ .TP .I aiocb -- 2.28.0