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Document underflow limitation in Randomizer::getFloat() #5240

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Document underflow limitation in Randomizer::getFloat() #5240

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Document underflow limitation in Randomizer::getFloat()
lacatoire Feb 1, 2026
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lacatoire Feb 2, 2026
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9 changes: 9 additions & 0 deletions reference/random/random/randomizer/getfloat.xml
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Expand Up @@ -341,6 +341,15 @@ Lat: +69.244304 Lng: -53.548951
to obtain the desired behavioral properties.
</para>
</note>
<caution>
<para>
Underflow is intentionally left unhandled in the γ-section algorithm.
This may result in incorrect values being returned for intervals with
boundaries in the subnormal range of floating point numbers, i.e.
for boundaries with an absolute value smaller than approximately
<literal>2<superscript>-1020</superscript></literal> (about <literal>8.9e-308</literal>).
</para>
</caution>
</refsect1>

<refsect1 role="seealso">
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