reference/C/MAN/exp.htm


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<TITLE>exp</TITLE>
<body bgcolor="#ffffcc">
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<pre>


<h3>EXP(3)              Linux Programmer's Manual              EXP(3)
</h3>

<h3>NAME
</h3>       exp,  log, log10, pow - exponential, logarithmic and power
       functions

<h3>SYNOPSIS
</h3>       #include &lt;math.h&gt;

       double exp(double x);

       double log(double x);

       double log10(double x);

       double pow(double x, double y);

<h3>DESCRIPTION
</h3>       The exp() function returns the value of  e  (the  base  of
       natural logarithms) raised to the power of x.

       The log() function returns the natural logarithm of x.

       The log10() function returns the base-10 logarithm of x.

       The  pow()  function  returns the value of x raised to the
       power of y.

<h3>ERRORS
</h3>       The log() and log10() functions can return  the  following
       errors:

       EDOM   The argument x is negative.

       ERANGE The  argument  x  is  zero.  The log of zero is not
              defined.

       The pow() function can return the following error:

       EDOM   The argument x is negative and y is not an integral
              value.  This would result in a complex number.

<h3>CONFORMING TO
</h3>       SVID 3, POSIX, BSD 4.3, ISO 9899

</pre>
<hr>
<h3>SEE ALSO
</h3><p>
<a href=sqrt.htm>sqrt</a>, 
<a href=cbrt.htm>cbrt</a>, 
<pre>


<h3>GNU                       June 16, 1993                         1
</h3>


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