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

</blockquote><h1><i>trunc</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>trunc</i>(&nbsp;)</strong> - truncate to integer</p>

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

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine discards the fractional part of a double-precision value <i>x</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The integer portion of <i>x</i>, represented in double-precision.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

</blockquote><h1><i>acosf</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>acosf</i>(&nbsp;)</strong> - compute an arc cosine (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float acosf
    (
    float x /* number between -1 and 1 */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine computes the arc cosine of <i>x</i> in single precision.
If <i>x</i> is the cosine of an angle <i>T</i>, this function returns <i>T</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The single-precision arc cosine of <i>x</i> in the range 0
to pi radians.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

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

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float asinf
    (
    float x /* number between -1 and 1 */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine computes the arc sine of <i>x</i> in single precision.
If <i>x</i> is the sine of an angle <i>T</i>, this function returns <i>T</i>.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The single-precision arc sine of <i>x</i> in the range
-pi/2 to pi/2 radians.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

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

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float atanf
    (
    float x /* tangent of an angle */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine computes the arc tangent of <i>x</i> in single precision.
If <i>x</i> is the tangent of an angle <i>T</i>, this function returns <i>T</i> 
(in radians).
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The single-precision arc tangent of <i>x</i> in the range -pi/2 to pi/2.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

<hr>
<a name="atan2f"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>atan2f</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>atan2f</i>(&nbsp;)</strong> - compute the arc tangent of y/x (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float atan2f
    (
    float y, /* numerator */
    float x  /* denominator */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the principal value of the arc tangent of <i>y</i>/<i>x</i>
in single precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The single-precision arc tangent of <i>y</i>/<i>x</i> in the range -pi to pi.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

</blockquote><h1><i>cbrtf</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>cbrtf</i>(&nbsp;)</strong> - compute a cube root</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float cbrtf
    (
    float x /* argument */
    )</pre>

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

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

</blockquote><h1><i>ceilf</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>ceilf</i>(&nbsp;)</strong> - compute the smallest integer greater than or equal to a specified value (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float ceilf
    (
    float v /* value to find the ceiling of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the smallest integer greater than or equal to <i>v</i>,
in single precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The smallest integral value greater than or equal to <i>v</i>,
in single precision.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

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

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float cosf
    (
    float x /* angle in radians */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the cosine of <i>x</i> in single precision.
The angle <i>x</i> is expressed in radians.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The single-precision cosine of <i>x</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

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

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float coshf
    (
    float x /* value to compute the hyperbolic cosine of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the hyperbolic cosine of <i>x</i> in single precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The single-precision hyperbolic cosine of <i>x</i> if the parameter is greater
than 1.0, or NaN if the parameter is less than 1.0.
<p>
Special cases:<br>
&nbsp;If&nbsp;<i>x</i>&nbsp;is&nbsp;+INF,&nbsp;-INF,&nbsp;or&nbsp;NaN,&nbsp;<b><i><a href="./mathALib.html#coshf">coshf</a></i>(&nbsp;)</b>&nbsp;returns&nbsp;<i>x</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

</blockquote><h1><i>expf</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>expf</i>(&nbsp;)</strong> - compute an exponential value (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float expf
    (
    float x /* exponent */
    )</pre>

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

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

</blockquote><h1><i>fabsf</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>fabsf</i>(&nbsp;)</strong> - compute an absolute value (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float fabsf
    (
    float v /* number to return the absolute value of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the absolute value of <i>v</i> in single precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
The single-precision absolute value of <i>v</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

</blockquote><h1><i>floorf</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>floorf</i>(&nbsp;)</strong> - compute the largest integer less than or equal to a specified value (ANSI)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float floorf
    (
    float v /* value to find the floor of */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the largest integer less than or equal to <i>v</i>,
in single precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The largest integral value less than or equal to <i>v</i>,
in single precision.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

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

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

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the remainder of <i>x</i>/<i>y</i> with the sign of <i>x</i>,
in single precision.
<p>
</blockquote><h4>INCLUDE FILES</h4><blockquote><p>
<b>math.h</b> 
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The single-precision modulus of <i>x</i>/<i>y</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./mathALib.html#top">mathALib</a></b>

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

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

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>float infinityf (void)</pre>

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