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-rw-r--r--doc/manual/expressions/language-values.xml9
1 files changed, 7 insertions, 2 deletions
diff --git a/doc/manual/expressions/language-values.xml b/doc/manual/expressions/language-values.xml
index 0bf6632d6..f1174ecb5 100644
--- a/doc/manual/expressions/language-values.xml
+++ b/doc/manual/expressions/language-values.xml
@@ -140,8 +140,13 @@ stdenv.mkDerivation {
</listitem>
- <listitem><para><emphasis>Integers</emphasis>, e.g.,
- <literal>123</literal>.</para></listitem>
+ <listitem><para>Numbers, which can be <emphasis>integers</emphasis> (like
+ <literal>123</literal>) or <emphasis>floating point</emphasis> (like
+ <literal>123.43</literal> or <literal>.27e13</literal>).</para>
+
+ <para>Numbers are type-compatible: pure integer operations will always
+ return integers, whereas any operation involving at least one floating point
+ number will have a floating point number as a result.</para></listitem>
<listitem><para><emphasis>Paths</emphasis>, e.g.,
<filename>/bin/sh</filename> or <filename>./builder.sh</filename>.