random: Use <superscript> when explaining Xoshiro256**’s jumping methods

Author: TimWolla

reference/random/random/engine/xoshiro256starstar/jump.xml

@@ -12,15 +12,16 @@
    <void />
   </methodsynopsis>
   <para>
-   Moves the algorithm’s state ahead by 2^128 steps, as if <function>Random\Engine\Xoshiro256StarStar::generate</function>
-   was called 2^128 times.
+   Moves the algorithm’s state ahead by 2<superscript>128</superscript> steps, as if
+   <function>Random\Engine\Xoshiro256StarStar::generate</function> was called
+   2<superscript>128</superscript> times.
   </para>
 
   <para>
    Jumping allows for splitting a single seeded <classname>Random\Engine\Xoshiro256StarStar</classname>
-   engine instance into 2^128 non-overlapping instances with 2^128 values each, by repeatedly
-   <link linkend="language.oop5.cloning">cloning</link> and then jumping an engine acting as
-   a blueprint.
+   engine instance into 2<superscript>128</superscript> non-overlapping instances with 2<superscript>128</superscript>
+   values each, by repeatedly <link linkend="language.oop5.cloning">cloning</link> and
+   then jumping an engine acting as a blueprint.
   </para>
  </refsect1>
 

reference/random/random/engine/xoshiro256starstar/jumplong.xml

@@ -12,21 +12,22 @@
    <void />
   </methodsynopsis>
   <para>
-   Moves the algorithm’s state ahead by 2^192 steps, as if <function>Random\Engine\Xoshiro256StarStar::generate</function>
-   was called 2^192 times.
+   Moves the algorithm’s state ahead by 2<superscript>192</superscript> steps, as if
+   <function>Random\Engine\Xoshiro256StarStar::generate</function> was called
+   2<superscript>192</superscript> times.
   </para>
 
   <para>
    Long jumping allows for splitting a single seeded <classname>Random\Engine\Xoshiro256StarStar</classname>
-   engine instance into 2^64 non-overlapping instances with 2^192 values each, by repeatedly
-   <link linkend="language.oop5.cloning">cloning</link> and then long jumping an engine acting as
-   a blueprint.
+   engine instance into 2<superscript>64</superscript> non-overlapping instances with 2<superscript>192</superscript>
+   values each, by repeatedly <link linkend="language.oop5.cloning">cloning</link> and then
+   long jumping an engine acting as a blueprint.
   </para>
 
   <para>
    Long jumping may be combined with <function>Random\Engine\Xoshiro256StarStar::jump</function>ing
-   by further splitting each of the 2^64 instances generated by long jumping, into 2^128 instances
-   of 2^64 values each.
+   by further splitting each of the 2<superscript>64</superscript> instances generated by long jumping,
+   into 2<superscript>128</superscript> instances of 2<superscript>64</superscript> values each.
   </para>
  </refsect1>