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From: Alejandro Colomar <colomar.6.4.3@gmail.com>
To: mtk.manpages@gmail.com
Cc: Alejandro Colomar <colomar.6.4.3@gmail.com>,
	linux-man@vger.kernel.org, gcc-patches@gcc.gnu.org,
	libc-alpha@sourceware.org
Subject: [PATCH 1/4] system_data_types.7: Add '__int128'
Date: Thu,  1 Oct 2020 18:34:41 +0200
Message-ID: <20201001163443.106933-2-colomar.6.4.3@gmail.com> (raw)
In-Reply-To: <20201001163443.106933-1-colomar.6.4.3@gmail.com>

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
---
 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


  reply index

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 16:34 [PATCH 0/4] Document 128-bit types Alejandro Colomar
2020-10-01 16:34 ` Alejandro Colomar [this message]
2020-10-02 11:47   ` [PATCH 1/4] system_data_types.7: Add '__int128' Florian Weimer
2020-10-02 17:52     ` Paul Eggert
2020-10-02 19:01       ` Alejandro Colomar
2020-10-02 19:54         ` Paul Eggert
2020-10-02 20:03           ` Alejandro Colomar
2020-10-02 20:19             ` Paul Eggert
2020-10-02 23:44               ` Alejandro Colomar
2020-10-02 23:53                 ` Paul Eggert
2020-10-05  7:12           ` Florian Weimer
2020-10-07  6:53             ` Michael Kerrisk (man-pages)
2020-10-07  6:57               ` Florian Weimer
2020-10-01 16:34 ` [PATCH 2/4] __int128.3: New link to system_data_types(7) Alejandro Colomar
2020-10-01 16:34 ` [PATCH 3/4] system_data_types.7: Add 'unsigned __int128' Alejandro Colomar
2020-10-01 16:34 ` [PATCH 4/4] unsigned-__int128.3: New link to system_data_types(7) Alejandro Colomar
2020-10-02 12:28 ` [PATCH v2 0/4] Document 128-bit types Alejandro Colomar
2020-10-02 12:28 ` [PATCH v2 1/4] system_data_types.7: Add '__int128' Alejandro Colomar
2020-10-02 12:28 ` [PATCH v2 2/4] __int128.3: New link to system_data_types(7) Alejandro Colomar
2020-10-02 12:28 ` [PATCH v2 3/4] system_data_types.7: Add 'unsigned __int128' Alejandro Colomar
2020-10-02 12:28 ` [PATCH v2 4/4] unsigned-__int128.3: New link to system_data_types(7) Alejandro Colomar

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