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-rw-r--r--lib/stdlib/doc/src/rand.xml23
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/stdlib/doc/src/rand.xml b/lib/stdlib/doc/src/rand.xml
index 8745e16908..3a5d18dc35 100644
--- a/lib/stdlib/doc/src/rand.xml
+++ b/lib/stdlib/doc/src/rand.xml
@@ -119,6 +119,11 @@ S0 = rand:seed_s(exsplus),
<pre>
{SND0, S2} = rand:normal_s(S1),</pre>
+ <p>Create a normal deviate with mean -3 and variance 0.5:</p>
+
+ <pre>
+{ND0, S3} = rand:normal_s(-3, 0.5, S2),</pre>
+
<note>
<p>This random number generator is not cryptographically
strong. If a strong cryptographic random number generator is
@@ -201,6 +206,15 @@ S0 = rand:seed_s(exsplus),
</func>
<func>
+ <name name="normal" arity="2"/>
+ <fsummary>Return a normal distributed random float.</fsummary>
+ <desc>
+ <p>Returns a normal N(Mean, Variance) deviate float
+ 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>
@@ -211,6 +225,15 @@ S0 = rand:seed_s(exsplus),
</func>
<func>
+ <name name="normal_s" arity="3"/>
+ <fsummary>Return a normal distributed random float.</fsummary>
+ <desc>
+ <p>Returns, for a specified state, a normal N(Mean, Variance)
+ deviate float and a new state.</p>
+ </desc>
+ </func>
+
+ <func>
<name name="seed" arity="1"/>
<fsummary>Seed random number generator.</fsummary>
<desc>