1 <?xml version=
"1.0" encoding=
"UTF-8"?>
2 <!DOCTYPE book PUBLIC
"-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
3 "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
9 <holder>Khronos Group
</holder>
12 <refentrytitle>tanh
</refentrytitle>
13 <manvolnum>3G
</manvolnum>
16 <refname>tanh
</refname>
17 <refpurpose>return the hyperbolic tangent of the parameter
</refpurpose>
19 <refsynopsisdiv><title>Declaration
</title>
22 <funcdef>genType
<function>tanh
</function></funcdef>
23 <paramdef>genType
<parameter>x
</parameter></paramdef>
27 <refsect1 id=
"parameters"><title>Parameters
</title>
30 <term><parameter>x
</parameter></term>
33 Specify the value whose hyperbolic tangent to return.
39 <refsect1 id=
"description"><title>Description
</title>
41 <function>tanh
</function> returns the hyperbolic tangent of
42 <inlineequation><mml:math><mml:mi mathvariant=
"italic">x
</mml:mi></mml:math></inlineequation>.
43 The hyperbolic tangent of
<inlineequation><mml:math><mml:mi mathvariant=
"italic">x
</mml:mi></mml:math></inlineequation>
45 <inlineequation><mml:math>
49 sinh(
<mml:mi>x
</mml:mi>)
52 cosh(
<mml:mi>x
</mml:mi>)
56 </mml:math></inlineequation>.
59 <refsect1 id=
"versions"><title>Version Support
</title>
60 <informaltable frame=
"topbot">
65 <entry>tanh
</entry>#newin13#
71 <refsect1 id=
"seealso"><title>See Also
</title>
73 <citerefentry><refentrytitle>sin
</refentrytitle></citerefentry>,
74 <citerefentry><refentrytitle>cos
</refentrytitle></citerefentry>,
75 <citerefentry><refentrytitle>sinh
</refentrytitle></citerefentry>,
76 <citerefentry><refentrytitle>cosh
</refentrytitle></citerefentry>
79 <refsect1 id=
"Copyright"><title>Copyright
</title>
81 Copyright
<trademark class=
"copyright"></trademark> 2011 Khronos Group.
82 This material may be distributed subject to the terms and conditions set forth in
83 the Open Publication License, v
1.0,
8 June
1999.
84 <ulink url=
"http://opencontent.org/openpub/">http://opencontent.org/openpub/
</ulink>.