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-rw-r--r--lib/stdlib/doc/src/Makefile4
-rw-r--r--lib/stdlib/doc/src/erl_anno.xml308
-rw-r--r--lib/stdlib/doc/src/erl_parse.xml98
-rw-r--r--lib/stdlib/doc/src/erl_scan.xml79
-rw-r--r--lib/stdlib/doc/src/gen_server.xml2
-rw-r--r--lib/stdlib/doc/src/lists.xml2
-rw-r--r--lib/stdlib/doc/src/maps.xml2
-rw-r--r--lib/stdlib/doc/src/rand.xml246
-rw-r--r--lib/stdlib/doc/src/random.xml3
-rw-r--r--lib/stdlib/doc/src/ref_man.xml4
-rw-r--r--lib/stdlib/doc/src/specs.xml2
11 files changed, 737 insertions, 13 deletions
diff --git a/lib/stdlib/doc/src/Makefile b/lib/stdlib/doc/src/Makefile
index f5d8b2072a..a4a2ed9931 100644
--- a/lib/stdlib/doc/src/Makefile
+++ b/lib/stdlib/doc/src/Makefile
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 1997-2012. All Rights Reserved.
+# Copyright Ericsson AB 1997-2015. All Rights Reserved.
#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
@@ -48,6 +48,7 @@ XML_REF3_FILES = \
digraph.xml \
digraph_utils.xml \
epp.xml \
+ erl_anno.xml \
erl_eval.xml \
erl_expand_records.xml \
erl_id_trans.xml \
@@ -81,6 +82,7 @@ XML_REF3_FILES = \
proplists.xml \
qlc.xml \
queue.xml \
+ rand.xml \
random.xml \
re.xml \
sets.xml \
diff --git a/lib/stdlib/doc/src/erl_anno.xml b/lib/stdlib/doc/src/erl_anno.xml
new file mode 100644
index 0000000000..281feacdc4
--- /dev/null
+++ b/lib/stdlib/doc/src/erl_anno.xml
@@ -0,0 +1,308 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE erlref SYSTEM "erlref.dtd">
+
+<erlref>
+ <header>
+ <copyright>
+ <year>2015</year>
+ <year>2015</year>
+ <holder>Ericsson AB, All Rights Reserved</holder>
+ </copyright>
+ <legalnotice>
+ The contents of this file are subject to the Erlang Public License,
+ Version 1.1, (the "License"); you may not use this file except in
+ compliance with the License. You should have received a copy of the
+ Erlang Public License along with this software. If not, it can be
+ retrieved on line at http://www.erlang.org/.
+
+ Software distributed under the License is distributed on an "AS IS"
+ basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ the License for the specific language governing rights and limitations
+ under the License.
+
+ The Initial Developer of the Original Code is Ericsson AB.
+ </legalnotice>
+
+ <title>erl_anno</title>
+ <prepared>Hans Bolinder</prepared>
+ <responsible>Kenneth Lundin</responsible>
+ <docno>1</docno>
+ <approved></approved>
+ <checked></checked>
+ <date>2015-02-26</date>
+ <rev>A</rev>
+ <file>erl_anno.xml</file>
+ </header>
+ <module>erl_anno</module>
+
+ <modulesummary>
+ Abstract Datatype for the Annotations of the Erlang Compiler
+ </modulesummary>
+
+ <description>
+ <p>This module implements an abstract type that is used by the
+ Erlang Compiler and its helper modules for holding data such as
+ column, line number, and text. The data type is a collection of
+ <marker id="annotations"><em>annotations</em></marker> as
+ described in the following.</p>
+ <p>The Erlang Token Scanner returns tokens with a subset of
+ the following annotations, depending on the options:</p>
+ <taglist>
+ <tag><c>column</c></tag>
+ <item><p>The column where the token begins.</p></item>
+ <tag><c>location</c></tag>
+ <item><p>The line and column where the token begins, or
+ just the line if the column unknown.</p>
+ </item>
+ <tag><c>text</c></tag>
+ <item><p>The token's text.</p></item>
+ </taglist>
+ <p>From the above the following annotation is derived:</p>
+ <taglist>
+ <tag><c>line</c></tag>
+ <item><p>The line where the token begins.</p></item>
+ </taglist>
+ <p>Furthermore, the following annotations are supported by
+ this module, and used by various modules:</p>
+ <taglist>
+ <tag><c>file</c></tag>
+ <item><p>A filename.</p></item>
+ <tag><c>generated</c></tag>
+ <item><p>A Boolean indicating if the abstract code is
+ compiler generated. The Erlang Compiler does not emit warnings
+ for such code.</p>
+ </item>
+ <tag><c>record</c></tag>
+ <item><p>A Boolean indicating if the origin of the abstract
+ code is a record. Used by Dialyzer to assign types to tuple
+ elements.</p>
+ </item>
+ </taglist>
+ <p>The functions
+ <seealso marker="erl_scan#column/1">column()</seealso>,
+ <seealso marker="erl_scan#end_location/1">end_location()</seealso>,
+ <seealso marker="erl_scan#line/1">line()</seealso>,
+ <seealso marker="erl_scan#location/1">location()</seealso>, and
+ <seealso marker="erl_scan#text/1">text()</seealso>
+ in the <c>erl_scan</c> module can be used for inspecting
+ annotations in tokens.</p>
+ <p>The functions
+ <seealso marker="erl_parse#map_anno/2">map_anno()</seealso>,
+ <seealso marker="erl_parse#fold_anno/3">fold_anno()</seealso>,
+ <seealso marker="erl_parse#mapfold_anno/3">mapfold_anno()</seealso>,
+ <seealso marker="erl_parse#new_anno/1">new_anno()</seealso>,
+ <seealso marker="erl_parse#anno_from_term/1">
+ anno_from_term()</seealso>, and
+ <seealso marker="erl_parse#anno_to_term/1">
+ anno_to_term()</seealso> in the <c>erl_parse</c> module can be
+ used for manipulating annotations in abstract code.
+ </p>
+ </description>
+
+ <datatypes>
+ <datatype>
+ <name><marker id="type-anno">anno()</marker></name>
+ <desc><p>A collection of annotations.</p>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="anno_term"></name>
+ <desc>
+ <p>The term representing a collection of annotations. It is
+ either a <c>location()</c> or a list of key-value pairs.</p>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="column"></name>
+ </datatype>
+ <datatype>
+ <name name="line"></name>
+ <desc>
+ <p>To be changed to a non-negative integer in Erlang/OTP 19.0.</p>
+ </desc>
+ </datatype>
+ <datatype>
+ <name name="location"></name>
+ </datatype>
+ <datatype>
+ <name name="text"></name>
+ </datatype>
+ </datatypes>
+
+ <funcs>
+ <func>
+ <name name="column" arity="1"/>
+ <type name="column"></type>
+ <fsummary>Return the column</fsummary>
+ <desc>
+ <p>Returns the column of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="end_location" arity="1"/>
+ <type name="location"></type>
+ <fsummary>Return the end location of the text</fsummary>
+ <desc>
+ <p>Returns the end location of the text of the
+ annotations <anno>Anno</anno>. If there is no text,
+ <c>undefined</c> is returned.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="file" arity="1"/>
+ <type name="filename"></type>
+ <fsummary>Return the filename</fsummary>
+ <desc>
+ <p>Returns the filename of the annotations <anno>Anno</anno>.
+ If there is no filename, <c>undefined</c> is returned.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="from_term" arity="1"/>
+ <fsummary>Return annotations given a term</fsummary>
+ <desc>
+ <p>Returns annotations with the representation <anno>Term</anno>.
+ </p>
+ <!--
+ <p>Although it is possible to create new annotations by calling
+ <c>from_term/1</c>, the intention is that one should not do
+ so - the proper way to create annotations is to call
+ <c>new/1</c> and then modify the annotations
+ by calling the <c>set_*</c> functions.</p>
+ -->
+ <p>See also <seealso marker="#to_term/1">to_term()</seealso>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="generated" arity="1"/>
+ <type name="generated"></type>
+ <fsummary>Return the generated Boolean</fsummary>
+ <desc>
+ <p>Returns <c>true</c> if the annotations <anno>Anno</anno>
+ has been marked as generated. The default is to return
+ <c>false</c>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="is_anno" arity="1"/>
+ <fsummary>Test for a collection of annotations</fsummary>
+ <desc>
+ <p>Returns <c>true</c> if <anno>Term</anno> is a collection of
+ annotations, <c>false</c> otherwise.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="line" arity="1"/>
+ <type name="line"></type>
+ <fsummary>Return the line</fsummary>
+ <desc>
+ <p>Returns the line of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="location" arity="1"/>
+ <type name="location"></type>
+ <fsummary>Return the location</fsummary>
+ <desc>
+ <p>Returns the location of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="new" arity="1"/>
+ <type name="location"></type>
+ <fsummary>Create a new collection of annotations</fsummary>
+ <desc>
+ <p>Creates a new collection of annotations given a location.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="set_file" arity="2"/>
+ <type name="filename"></type>
+ <fsummary>Modify the filename</fsummary>
+ <desc>
+ <p>Modifies the filename of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="set_generated" arity="2"/>
+ <type name="generated"></type>
+ <fsummary>Modify the generated marker</fsummary>
+ <desc>
+ <p>Modifies the generated marker of the annotations
+ <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="set_line" arity="2"/>
+ <type name="line"></type>
+ <fsummary>Modify the line</fsummary>
+ <desc>
+ <p>Modifies the line of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="set_location" arity="2"/>
+ <type name="location"></type>
+ <fsummary>Modify the location</fsummary>
+ <desc>
+ <p>Modifies the location of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="set_record" arity="2"/>
+ <type name="record"></type>
+ <fsummary>Modify the record marker</fsummary>
+ <desc>
+ <p>Modifies the record marker of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="set_text" arity="2"/>
+ <type name="text"></type>
+ <fsummary>Modify the text</fsummary>
+ <desc>
+ <p>Modifies the text of the annotations <anno>Anno</anno>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="text" arity="1"/>
+ <type name="text"></type>
+ <fsummary>Return the text</fsummary>
+ <desc>
+ <p>Returns the text of the annotations <anno>Anno</anno>.
+ If there is no text, <c>undefined</c> is returned.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="to_term" arity="1"/>
+ <fsummary>Return the term representing a collection of
+ annotations</fsummary>
+ <desc>
+ <p>Returns the term representing the annotations <anno>Anno</anno>.
+ </p>
+ <p>See also <seealso marker="#from_term/1">from_term()</seealso>.
+ </p>
+ </desc>
+ </func>
+ </funcs>
+ <section>
+ <title>See Also</title>
+ <p><seealso marker="erl_scan">erl_scan(3)</seealso>,
+ <seealso marker="erl_parse">erl_parse(3)</seealso>
+ </p>
+ </section>
+</erlref>
diff --git a/lib/stdlib/doc/src/erl_parse.xml b/lib/stdlib/doc/src/erl_parse.xml
index cf0bff48cd..b97d06e919 100644
--- a/lib/stdlib/doc/src/erl_parse.xml
+++ b/lib/stdlib/doc/src/erl_parse.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2014</year>
+ <year>1996</year><year>2015</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -192,6 +192,97 @@
considered a string.</p>
</desc>
</func>
+ <func>
+ <name name="map_anno" arity="2"/>
+ <fsummary>
+ Map a function over the annotations of an abstract form
+ </fsummary>
+ <desc>
+ <p>Modifies the abstract form <anno>Abstr</anno> by applying
+ <anno>Fun</anno> on every collection of annotations of the
+ abstract form. The abstract form is traversed in a
+ depth-first, left-to-right, fashion.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="fold_anno" arity="3"/>
+ <fsummary>
+ Fold a function over the annotations of an abstract form
+ </fsummary>
+ <desc>
+ <p>Updates an accumulator by applying <anno>Fun</anno> on
+ every collection of annotations of the abstract form
+ <anno>Abstr</anno>. The first call to <anno>Fun</anno> has
+ <anno>AccIn</anno> as argument, and the returned accumulator
+ <anno>AccOut</anno> is passed to the next call, and so on.
+ The final value of the accumulator is returned. The abstract
+ form is traversed in a depth-first, left-to-right, fashion.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="mapfold_anno" arity="3"/>
+ <fsummary>
+ Map and fold a function over the annotations of an abstract form
+ </fsummary>
+ <desc>
+ <p>Modifies the abstract form <anno>Abstr</anno> by applying
+ <anno>Fun</anno> on every collection of annotations of the
+ abstract form, while at the same time updating an
+ accumulator. The first call to <anno>Fun</anno> has
+ <anno>AccIn</anno> as second argument, and the returned
+ accumulator <anno>AccOut</anno> is passed to the next call,
+ and so on. The modified abstract form as well as the the
+ final value of the accumulator is returned. The abstract
+ form is traversed in a depth-first, left-to-right, fashion.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="new_anno" arity="1"/>
+ <fsummary>
+ Create new annotations
+ </fsummary>
+ <desc>
+ <p>Creates an abstract form from a term which has the same
+ structure as an abstract form, but <seealso
+ marker="erl_anno#type-location">locations</seealso> where the
+ abstract form has annotations. For each location, <seealso
+ marker="erl_anno#new/1"><c>erl_anno:new/1</c></seealso> is
+ called, and the annotations replace the location.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="anno_from_term" arity="1"/>
+ <fsummary>
+ Return annotations as terms
+ </fsummary>
+ <desc>
+ <p>Assumes that <anno>Term</anno> is a term with the same
+ structure as an abstract form, but with terms, T say, on
+ those places where an abstract form has annotations. Returns
+ an abstract form where every term T has been replaced by the
+ value returned by calling <c>erl_anno:from_term(T)</c>. The
+ term <anno>Term</anno> is traversed in a depth-first,
+ left-to-right, fashion.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="anno_to_term" arity="1"/>
+ <fsummary>
+ Return the representation of annotations
+ </fsummary>
+ <desc>
+ <p>Returns a term where every collection of annotations Anno of
+ <anno>Abstr</anno> has been replaced by the term returned by
+ calling <c>erl_anno:to_term(Anno)</c>. The abstract form is
+ traversed in a depth-first, left-to-right, fashion.
+ </p>
+ </desc>
+ </func>
</funcs>
<section>
@@ -211,8 +302,9 @@
<section>
<title>See Also</title>
<p><seealso marker="io">io(3)</seealso>,
- <seealso marker="erl_scan">erl_scan(3)</seealso>,
- ERTS User's Guide</p>
+ <seealso marker="erl_anno">erl_anno(3)</seealso>,
+ <seealso marker="erl_scan">erl_scan(3)</seealso>,
+ <seealso marker="erts:absform">ERTS User's Guide</seealso></p>
</section>
</erlref>
diff --git a/lib/stdlib/doc/src/erl_scan.xml b/lib/stdlib/doc/src/erl_scan.xml
index 855c8fc195..8f9c1db25b 100644
--- a/lib/stdlib/doc/src/erl_scan.xml
+++ b/lib/stdlib/doc/src/erl_scan.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2013</year>
+ <year>1996</year><year>2015</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -120,7 +120,7 @@
<c>string(<anno>String</anno>,
<anno>StartLocation</anno>, [])</c>.</p>
<p><c><anno>StartLocation</anno></c> indicates the initial location
- when scanning starts. If <c><anno>StartLocation</anno></c> is a line
+ when scanning starts. If <c><anno>StartLocation</anno></c> is a line,
<c>attributes()</c> as well as <c><anno>EndLocation</anno></c> and
<c><anno>ErrorLocation</anno></c> will be lines. If
<c><anno>StartLocation</anno></c> is a pair of a line and a column
@@ -132,8 +132,12 @@
line where the token begins, as well as the text of the
token (if the <c>text</c> option is given), all of which can
be accessed by calling <seealso
- marker="#token_info/1">token_info/1,2</seealso> or <seealso
- marker="#attributes_info/1">attributes_info/1,2</seealso>.</p>
+ marker="#token_info/1">token_info/1,2</seealso>, <seealso
+ marker="#attributes_info/1">attributes_info/1,2</seealso>,
+ <seealso marker="#column/1">column/1</seealso>,
+ <seealso marker="#line/1">line/1</seealso>,
+ <seealso marker="#location/1">location/1</seealso>, and
+ <seealso marker="#text/1">text/1</seealso>.</p>
<p>A <em>token</em> is a tuple containing information about
syntactic category, the token attributes, and the actual
terminal symbol. For punctuation characters (e.g. <c>;</c>,
@@ -237,6 +241,70 @@
</desc>
</func>
<func>
+ <name name="category" arity="1"/>
+ <fsummary>Return the category</fsummary>
+ <desc>
+ <p>Returns the category of <c><anno>Token</anno></c>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="symbol" arity="1"/>
+ <fsummary>Return the symbol</fsummary>
+ <desc>
+ <p>Returns the symbol of <c><anno>Token</anno></c>.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="column" arity="1"/>
+ <fsummary>Return the column</fsummary>
+ <desc>
+ <p>Returns the column of <c><anno>Token</anno></c>'s
+ collection of annotations.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="end_location" arity="1"/>
+ <fsummary>Return the end location of the text</fsummary>
+ <desc>
+ <p>Returns the end location of the text of
+ <c><anno>Token</anno></c>'s collection of annotations. If
+ there is no text,
+ <c>undefined</c> is returned.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="line" arity="1"/>
+ <fsummary>Return the line</fsummary>
+ <desc>
+ <p>Returns the line of <c><anno>Token</anno></c>'s collection
+ of annotations.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="location" arity="1"/>
+ <fsummary>Return the location</fsummary>
+ <desc>
+ <p>Returns the location of <c><anno>Token</anno></c>'s
+ collection of annotations.
+ </p>
+ </desc>
+ </func>
+ <func>
+ <name name="text" arity="1"/>
+ <fsummary>Return the text</fsummary>
+ <desc>
+ <p>Returns the text of <c><anno>Token</anno></c>'s collection
+ of annotations. If there is no text, <c>undefined</c> is
+ returned.
+ </p>
+ </desc>
+ </func>
+ <func>
<name name="token_info" arity="1"/>
<fsummary>Return information about a token</fsummary>
<desc>
@@ -417,6 +485,7 @@ Module:format_error(ErrorDescriptor)</code>
<section>
<title>See Also</title>
<p><seealso marker="io">io(3)</seealso>,
- <seealso marker="erl_parse">erl_parse(3)</seealso></p>
+ <seealso marker="erl_anno">erl_anno(3)</seealso>,
+ <seealso marker="erl_parse">erl_parse(3)</seealso></p>
</section>
</erlref>
diff --git a/lib/stdlib/doc/src/gen_server.xml b/lib/stdlib/doc/src/gen_server.xml
index a915e567a5..3c92de59b9 100644
--- a/lib/stdlib/doc/src/gen_server.xml
+++ b/lib/stdlib/doc/src/gen_server.xml
@@ -321,7 +321,7 @@ gen_server:abcast -----> Module:handle_cast/2
which may be infinity.</p>
<p>This problem does not exist if all nodes are Erlang nodes.</p>
</warning>
- <p>To avoid that late answers (after the timeout) pollutes
+ <p>To prevent late answers (after the timeout) from polluting
the caller's message queue, a middleman process is used to
do the actual calls. Late answers will then be discarded
when they arrive to a terminated process.</p>
diff --git a/lib/stdlib/doc/src/lists.xml b/lib/stdlib/doc/src/lists.xml
index ee3c51c62c..dcc08d008b 100644
--- a/lib/stdlib/doc/src/lists.xml
+++ b/lib/stdlib/doc/src/lists.xml
@@ -176,7 +176,7 @@ filtermap(Fun, List1) ->
false -> Acc;
true -> [Elem|Acc];
{true,Value} -> [Value|Acc]
- end,
+ end
end, [], List1).</code>
<p>Example:</p>
<pre>
diff --git a/lib/stdlib/doc/src/maps.xml b/lib/stdlib/doc/src/maps.xml
index 59c26d9896..e46068230a 100644
--- a/lib/stdlib/doc/src/maps.xml
+++ b/lib/stdlib/doc/src/maps.xml
@@ -339,7 +339,7 @@ false</code>
<fsummary></fsummary>
<desc>
<p>
- Returns a complete list of values, in arbitrary order, contained in map <c>M</c>.
+ Returns a complete list of values, in arbitrary order, contained in map <c>Map</c>.
</p>
<p>
The call will fail with a <c>{badmap,Map}</c> exception if <c><anno>Map</anno></c> is not a map.
diff --git a/lib/stdlib/doc/src/rand.xml b/lib/stdlib/doc/src/rand.xml
new file mode 100644
index 0000000000..178afda5a0
--- /dev/null
+++ b/lib/stdlib/doc/src/rand.xml
@@ -0,0 +1,246 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!DOCTYPE erlref SYSTEM "erlref.dtd">
+
+<erlref>
+ <header>
+ <copyright>
+ <year>2015</year>
+ <holder>Ericsson AB. All Rights Reserved.</holder>
+ </copyright>
+ <legalnotice>
+ The contents of this file are subject to the Erlang Public License,
+ Version 1.1, (the "License"); you may not use this file except in
+ compliance with the License. You should have received a copy of the
+ Erlang Public License along with this software. If not, it can be
+ retrieved online at http://www.erlang.org/.
+
+ Software distributed under the License is distributed on an "AS IS"
+ basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ the License for the specific language governing rights and limitations
+ under the License.
+
+ </legalnotice>
+
+ <title>rand</title>
+ <prepared></prepared>
+ <responsible></responsible>
+ <docno>1</docno>
+ <approved></approved>
+ <checked></checked>
+ <date></date>
+ <rev>A</rev>
+ <file>rand.xml</file>
+ </header>
+ <module>rand</module>
+ <modulesummary>Pseudo random number generation</modulesummary>
+ <description>
+ <p>Random number generator.</p>
+
+ <p>The module contains several different algorithms and can be
+ extended with more in the future. The current uniform
+ distribution algorithms uses the
+ <url href="http://xorshift.di.unimi.it">
+ scrambled Xorshift algorithms by Sebastiano Vigna</url> and the
+ normal distribution algorithm uses the
+ <url href="http://www.jstatsoft.org/v05/i08">
+ Ziggurat Method by Marsaglia and Tsang</url>.
+ </p>
+
+ <p>The implemented algorithms are:</p>
+ <taglist>
+ <tag><c>exsplus</c></tag> <item>Xorshift116+, 58 bits precision and period of 2^116-1.</item>
+ <tag><c>exs64</c></tag> <item>Xorshift64*, 64 bits precision and a period of 2^64-1.</item>
+ <tag><c>exs1024</c></tag> <item>Xorshift1024*, 64 bits precision and a period of 2^1024-1.</item>
+ </taglist>
+
+ <p>The current default algorithm is <c>exsplus</c>. The default
+ may change in future. If a specific algorithm is required make
+ sure to always use <seealso marker="#seed-1">seed/1</seealso>
+ to initialize the state.
+ </p>
+
+ <p>Every time a random number is requested, a state is used to
+ calculate it and a new state produced. The state can either be
+ implicit or it can be an explicit argument and return value.
+ </p>
+
+ <p>The functions with implicit state use the process dictionary
+ variable <c>rand_seed</c> to remember the current state.</p>
+
+ <p>If a process calls <seealso marker="#uniform-0">uniform/0</seealso> or
+ <seealso marker="#uniform-1">uniform/1</seealso> without
+ setting a seed first, <seealso marker="#seed-1">seed/1</seealso>
+ is called automatically with the default algorithm and creates a
+ non-constant seed.</p>
+
+ <p>The functions with explicit state never use the process
+ dictionary.</p>
+
+ <p>Examples:</p>
+ <pre>
+ %% Simple usage. Creates and seeds the default algorithm
+ %% with a non-constant seed if not already done.
+ R0 = rand:uniform(),
+ R1 = rand:uniform(),
+
+ %% Use a given algorithm.
+ _ = rand:seed(exs1024),
+ R2 = rand:uniform(),
+
+ %% Use a given algorithm with a constant seed.
+ _ = rand:seed(exs1024, {123, 123534, 345345}),
+ R3 = rand:uniform(),
+
+ %% Use the functional api with non-constant seed.
+ S0 = rand:seed_s(exsplus),
+ {R4, S1} = rand:uniform_s(S0),
+
+ %% Create a standard normal deviate.
+ {SND0, S2} = rand:normal_s(S1),
+ </pre>
+
+ <note><p>This random number generator is not cryptographically
+ strong. If a strong cryptographic random number generator is
+ needed, use one of functions in the
+ <seealso marker="crypto:crypto">crypto</seealso>
+ module, for example <c>crypto:rand_bytes/1</c>.</p></note>
+ </description>
+ <datatypes>
+ <datatype>
+ <name name="alg"/>
+ </datatype>
+
+ <datatype>
+ <name name="state"/>
+ <desc><p>Algorithm dependent state.</p></desc>
+ </datatype>
+
+ <datatype>
+ <name name="export_state"/>
+ <desc><p>Algorithm dependent state which can be printed or saved to file.</p></desc>
+ </datatype>
+ </datatypes>
+
+ <funcs>
+ <func>
+ <name name="seed" arity="1"/>
+ <fsummary>Seed random number generator</fsummary>
+ <desc>
+ <marker id="seed-1"/>
+ <p>Seeds random number generation with the given algorithm and time dependent
+ data if <anno>AlgOrExpState</anno> is an algorithm.</p>
+ <p>Otherwise recreates the exported seed in the process
+ dictionary, and returns the state.
+ <em>See also:</em> <seealso marker="#export_seed-0">export_seed/0</seealso>.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="seed_s" arity="1"/>
+ <fsummary>Seed random number generator</fsummary>
+ <desc>
+ <p>Seeds random number generation with the given algorithm and time dependent
+ data if <anno>AlgOrExpState</anno> is an algorithm.</p>
+ <p>Otherwise recreates the exported seed and returns the state.
+ <em>See also:</em> <seealso marker="#export_seed-0">export_seed/0</seealso>.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="seed" arity="2"/>
+ <fsummary>Seed the random number generation</fsummary>
+ <desc>
+ <p>Seeds random number generation with the given algorithm and
+ integers in the process dictionary and returns
+ the state.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="seed_s" arity="2"/>
+ <fsummary>Seed the random number generation</fsummary>
+ <desc>
+ <p>Seeds random number generation with the given algorithm and
+ integers and returns the state.</p>
+ </desc>
+ </func>
+
+ <func>
+ <name name="export_seed" arity="0"/>
+ <fsummary>Export the random number generation state</fsummary>
+ <desc><marker id="export_seed-0"/>
+ <p>Returns the random number state in an external format.
+ To be used with <seealso marker="#seed-1">seed/1</seealso>.</p>
+ </desc>
+ </func>
+
+ <func>
+ <name name="export_seed_s" arity="1"/>
+ <fsummary>Export the random number generation state</fsummary>
+ <desc><marker id="export_seed_s-1"/>
+ <p>Returns the random number generator state in an external format.
+ To be used with <seealso marker="#seed-1">seed/1</seealso>.</p>
+ </desc>
+ </func>
+
+ <func>
+ <name name="uniform" arity="0"/>
+ <fsummary>Return a random float</fsummary>
+ <desc>
+ <marker id="uniform-0"/>
+ <p>Returns a random float uniformly distributed in the value
+ range <c>0.0 &lt; <anno>X</anno> &lt; 1.0 </c> and
+ updates the state in the process dictionary.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="uniform_s" arity="1"/>
+ <fsummary>Return a random float</fsummary>
+ <desc>
+ <p>Given a state, <c>uniform_s/1</c> returns a random float
+ uniformly distributed in the value range <c>0.0 &lt;
+ <anno>X</anno> &lt; 1.0</c> and a new state.</p>
+ </desc>
+ </func>
+
+ <func>
+ <name name="uniform" arity="1"/>
+ <fsummary>Return a random integer</fsummary>
+ <desc>
+ <marker id="uniform-1"/>
+ <p>Given an integer <c><anno>N</anno> >= 1</c>,
+ <c>uniform/1</c> returns a random integer uniformly
+ distributed in the value range
+ <c>1 &lt;= <anno>X</anno> &lt;= <anno>N</anno></c> and
+ updates the state in the process dictionary.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="uniform_s" arity="2"/>
+ <fsummary>Return a random integer</fsummary>
+ <desc>
+ <p>Given an integer <c><anno>N</anno> >= 1</c> and a state,
+ <c>uniform_s/2</c> returns a random integer uniformly
+ distributed in the value range <c>1 &lt;= <anno>X</anno> &lt;=
+ <anno>N</anno></c> and a new state.</p>
+ </desc>
+ </func>
+
+ <func>
+ <name name="normal" arity="0"/>
+ <fsummary>Return a standard normal distributed random float</fsummary>
+ <desc>
+ <p>Returns a standard normal deviate float (that is, the mean
+ is 0 and the standard deviation is 1) and updates the state in
+ the process dictionary.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="normal_s" arity="1"/>
+ <fsummary>Return a standard normal distributed random float</fsummary>
+ <desc>
+ <p>Given a state, <c>normal_s/1</c> returns a standard normal
+ deviate float (that is, the mean is 0 and the standard
+ deviation is 1) and a new state.</p>
+ </desc>
+ </func>
+
+ </funcs>
+</erlref>
diff --git a/lib/stdlib/doc/src/random.xml b/lib/stdlib/doc/src/random.xml
index 2cc621ffc3..e475cda23d 100644
--- a/lib/stdlib/doc/src/random.xml
+++ b/lib/stdlib/doc/src/random.xml
@@ -48,6 +48,9 @@
<p>It should be noted that this random number generator is not cryptographically
strong. If a strong cryptographic random number generator is needed for
example <c>crypto:rand_bytes/1</c> could be used instead.</p>
+ <note><p>The new and improved <seealso
+ marker="stdlib:rand">rand</seealso> module should be used
+ instead of this module.</p></note>
</description>
<datatypes>
<datatype>
diff --git a/lib/stdlib/doc/src/ref_man.xml b/lib/stdlib/doc/src/ref_man.xml
index ea4009dc3e..eee4a68ca1 100644
--- a/lib/stdlib/doc/src/ref_man.xml
+++ b/lib/stdlib/doc/src/ref_man.xml
@@ -4,7 +4,7 @@
<application xmlns:xi="http://www.w3.org/2001/XInclude">
<header>
<copyright>
- <year>1996</year><year>2013</year>
+ <year>1996</year><year>2015</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -45,6 +45,7 @@
<xi:include href="digraph.xml"/>
<xi:include href="digraph_utils.xml"/>
<xi:include href="epp.xml"/>
+ <xi:include href="erl_anno.xml"/>
<xi:include href="erl_eval.xml"/>
<xi:include href="erl_expand_records.xml"/>
<xi:include href="erl_id_trans.xml"/>
@@ -78,6 +79,7 @@
<xi:include href="proplists.xml"/>
<xi:include href="qlc.xml"/>
<xi:include href="queue.xml"/>
+ <xi:include href="rand.xml"/>
<xi:include href="random.xml"/>
<xi:include href="re.xml"/>
<xi:include href="sets.xml"/>
diff --git a/lib/stdlib/doc/src/specs.xml b/lib/stdlib/doc/src/specs.xml
index fd77b52da6..0418bf7b22 100644
--- a/lib/stdlib/doc/src/specs.xml
+++ b/lib/stdlib/doc/src/specs.xml
@@ -11,6 +11,7 @@
<xi:include href="../specs/specs_digraph.xml"/>
<xi:include href="../specs/specs_digraph_utils.xml"/>
<xi:include href="../specs/specs_epp.xml"/>
+ <xi:include href="../specs/specs_erl_anno.xml"/>
<xi:include href="../specs/specs_erl_eval.xml"/>
<xi:include href="../specs/specs_erl_expand_records.xml"/>
<xi:include href="../specs/specs_erl_id_trans.xml"/>
@@ -44,6 +45,7 @@
<xi:include href="../specs/specs_proplists.xml"/>
<xi:include href="../specs/specs_qlc.xml"/>
<xi:include href="../specs/specs_queue.xml"/>
+ <xi:include href="../specs/specs_rand.xml"/>
<xi:include href="../specs/specs_random.xml"/>
<xi:include href="../specs/specs_re.xml"/>
<xi:include href="../specs/specs_sets.xml"/>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 04:44:10 +0000