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>isinf
</refentrytitle>
13 <manvolnum>3G
</manvolnum>
16 <refname>isinf
</refname>
17 <refpurpose>determine whether the parameter is positive or negative infinity
</refpurpose>
19 <refsynopsisdiv><title>Declaration
</title>
22 <funcdef>genBType
<function>isinf
</function></funcdef>
23 <paramdef>genType
<parameter>x
</parameter></paramdef>
26 <funcdef>genBType
<function>isinf
</function></funcdef>
27 <paramdef>genDType
<parameter>x
</parameter></paramdef>
31 <refsect1 id=
"parameters"><title>Parameters
</title>
34 <term><parameter>x
</parameter></term>
37 Specifies the value to test for infinity.
43 <refsect1 id=
"description"><title>Description
</title>
45 For each element element
<emphasis>i
</emphasis> of the result,
<function>isinf
</function> returns
<constant>true
</constant> if
46 <parameter>x
</parameter>[
<emphasis>i
</emphasis>] is posititve or negative floating point infinity and false otherwise.
49 <refsect1 id=
"versions"><title>Version Support
</title>
50 <informaltable frame=
"topbot">
55 <entry>isinf (genType)
</entry>#newin11#
58 <entry>isinf (genDType)
</entry>#newin40#
64 <refsect1 id=
"seealso"><title>See Also
</title>
66 <citerefentry><refentrytitle>isnan
</refentrytitle></citerefentry>
69 <refsect1 id=
"Copyright"><title>Copyright
</title>
71 Copyright
<trademark class=
"copyright"></trademark> 2011 Khronos Group.
72 This material may be distributed subject to the terms and conditions set forth in
73 the Open Publication License, v
1.0,
8 June
1999.
74 <ulink url=
"http://opencontent.org/openpub/">http://opencontent.org/openpub/
</ulink>.