reference/math/functions/sqrt.xml
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61374bbe228e8e9c55a24aba59a1e2bb2a871148
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>float</type><methodname>sqrt</methodname>
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<methodparam><type>float</type><parameter>arg</parameter></methodparam>
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</methodsynopsis>
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<methodsynopsis>
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<type>float</type><methodname>sqrt</methodname>
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<methodparam><type>float</type><parameter>num</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the square root of <parameter>arg</parameter>.
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Returns the square root of <parameter>num</parameter>.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>arg</parameter></term>
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<term><parameter>num</parameter></term>
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<listitem>
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<para>
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The argument to process
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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The square root of <parameter>arg</parameter>
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or the special value <literal>NAN</literal> for negative numbers.
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The square root of <parameter>num</parameter>
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or the special value <constant>NAN</constant> for negative numbers.
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</para>
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</refsect1>
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<refsect1 role="examples">
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<para>
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<simplelist>
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<member><function>pow</function></member>
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<member><constant>M_SQRTPI</constant> - <code>sqrt(pi)</code></member>
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<member><constant>M_2_SQRTPI</constant> - <code>2/sqrt(pi)</code></member>
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<member><constant>M_SQRT2</constant> - <code>sqrt(2)</code></member>
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<member><constant>M_SQRT3</constant> - <code>sqrt(3)</code></member>
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<member><constant>M_SQRT1_2</constant> - <code>1/sqrt(2)</code></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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