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<BLOCKQUOTE>
<H1><A NAME="NAME"><A NAME="1">NAME
</A></A></H1>
<P>
<B>cosh</B> - returns hyperbolic cosine of scalars and vectors.
</P>
<H1><A NAME="SYNOPSIS"><A NAME="2">SYNOPSIS
</A></A></H1>
<PRE> float cosh(float a);
float1 cosh(float1 a);
float2 cosh(float2 a);
float3 cosh(float3 a);
float4 cosh(float4 a);
half cosh(half a);
half1 cosh(half1 a);
half2 cosh(half2 a);
half3 cosh(half3 a);
half4 cosh(half4 a);
fixed cosh(fixed a);
fixed1 cosh(fixed1 a);
fixed2 cosh(fixed2 a);
fixed3 cosh(fixed3 a);
fixed4 cosh(fixed4 a);
</PRE>
<H1><A NAME="PARAMETERS"><A NAME="3">PARAMETERS
</A></A></H1>
<DL>
<DT><STRONG>a
</STRONG></DT>
<DD>
<P>
Vector or scalar of which to determine the hyperbolic cosine.
</P>
</DD></DL>
<H1><A NAME="DESCRIPTION"><A NAME="4">DESCRIPTION
</A></A></H1>
<P>
Returns the hyperbolic cosine of <I>a</I>.
</P>
<P>
For vectors, the returned vector contains the hyperbolic cosine of each
element of the input vector.
</P>
<H1><A NAME="REFERENCE_IMPLEMENTATION"><A NAME="5">REFERENCE IMPLEMENTATION
</A></A></H1>
<P>
<B>cosh</B> for a scalar <B>float</B> could be implemented like this.
</P>
<PRE> float cosh(float x)
{
return 0.5 * (exp(x)+exp(-x));
}
</PRE>
<H1><A NAME="PROFILE_SUPPORT"><A NAME="6">PROFILE SUPPORT
</A></A></H1>
<P>
<B>cosh</B> is supported in all profiles except <A HREF="fp20.html">fp20</A>.
</P>
<H1><A NAME="SEE_ALSO"><A NAME="7">SEE ALSO
</A></A></H1>
<P>
<A HREF="acos.html"><I>acos</I></A>, <A HREF="cos.html"><I>cos</I></A>, <A HREF="exp.html"><I>exp</I></A>, <A HREF="sinh.html"><I>sinh</I></A>, <A HREF="tanh.html"><I>tanh</I></A>
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