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<p>
The largest integral value less than or equal to <i>v</i>,
in double precision.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="fmod"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>fmod</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>fmod</i>(&nbsp;)</strong> - compute the remainder of x/y (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double fmod
    (
    double x, /* numerator */
    double y  /* denominator */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The double-precision modulus of <i>x</i>/<i>y</i> with the sign of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="infinity"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>infinity</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>infinity</i>(&nbsp;)</strong> - return a very large double</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double infinity (void)</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns a very large double.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision representation of positive infinity.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="irint"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>irint</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>irint</i>(&nbsp;)</strong> - convert a double-precision value to an integer</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int irint
    (
    double x /* argument */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine converts a double-precision value <i>x</i> to an integer
using the selected IEEE rounding direction.
<p>
</blockquote><h4>CAVEAT</h4><blockquote><p>
<p>
The rounding direction is not pre-selectable and is fixed for
round-to-the-nearest.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The integer representation of <i>x</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="iround"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>iround</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>iround</i>(&nbsp;)</strong> - round a number to the nearest integer</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int iround
    (
    double x /* argument */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine rounds a double-precision value <i>x</i> to the nearest
integer value.
<p>
</blockquote><h4>NOTE</h4><blockquote><p>
<p>
If <i>x</i> is spaced evenly between two integers, it returns the even integer.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The integer nearest to <i>x</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="log"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>log</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>log</i>(&nbsp;)</strong> - compute a natural logarithm (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double log
    (
    double x /* value to compute the natural logarithm of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision natural logarithm of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="log10"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>log10</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>log10</i>(&nbsp;)</strong> - compute a base-10 logarithm (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double log10
    (
    double x /* value to compute the base-10 logarithm of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision base-10 logarithm of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="log2"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>log2</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>log2</i>(&nbsp;)</strong> - compute a base-2 logarithm</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double log2
    (
    double x /* value to compute the base-two logarithm of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the base-2 logarithm of <i>x</i> in double precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision base-2 logarithm of <i>x</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="pow"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>pow</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>pow</i>(&nbsp;)</strong> - compute the value of a number raised to a specified power (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double pow
    (
    double x, /* operand */
    double y  /* exponent */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision value of <i>x</i> to the power of <i>y</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="round"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>round</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>round</i>(&nbsp;)</strong> - round a number to the nearest integer</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double round
    (
    double x /* value to round */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine rounds a double-precision value <i>x</i> to the nearest
integral value.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision representation of <i>x</i> rounded to the
nearest integral value.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="sin"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>sin</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>sin</i>(&nbsp;)</strong> - compute a sine (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double sin
    (
    double x /* angle in radians */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision floating-point sine of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="sincos"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>sincos</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>sincos</i>(&nbsp;)</strong> - compute both a sine and cosine</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>void sincos
    (
    double   x,         /* angle in radians */
    double * sinResult, /* sine result buffer */
    double * cosResult  /* cosine result buffer */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine computes both the sine and cosine of <i>x</i> in double precision.
The sine is copied to <i>sinResult</i> and the cosine is copied to <i>cosResult</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
N/A
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="sinh"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>sinh</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>sinh</i>(&nbsp;)</strong> - compute a hyperbolic sine (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double sinh
    (
    double x /* angle in radians */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision hyperbolic sine of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="sqrt"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>sqrt</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>sqrt</i>(&nbsp;)</strong> - compute a non-negative square root (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double sqrt
    (
    double x /* value to compute the square root of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision square root of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="tan"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>tan</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>tan</i>(&nbsp;)</strong> - compute a tangent (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double tan
    (
    double x /* angle in radians */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The double-precision tangent of <i>x</i>.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>, Kernighan & Ritchie:
<i>The C Programming Language, 2nd Edition </i>

<hr>
<a name="tanh"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>tanh</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>tanh</i>(&nbsp;)</strong> - compute a hyperbolic tangent (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>double tanh
    (