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Standard C Math [C++ Reference]
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<h1><a name="standard_c_math" id="standard_c_math">Standard C Math</a></h1>
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<td class="col0"><a href="../../c/math/abs.html" class="wikilink1" title="c:math:abs">abs</a></td><td class="col1">absolute value</td>
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<td class="col0"><a href="../../c/math/acos.html" class="wikilink1" title="c:math:acos">acos</a></td><td class="col1">arc cosine</td>
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<td class="col0"><a href="../../c/math/asin.html" class="wikilink1" title="c:math:asin">asin</a></td><td class="col1">arc sine</td>
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<td class="col0"><a href="../../c/math/atan.html" class="wikilink1" title="c:math:atan">atan</a></td><td class="col1">arc tangent</td>
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<td class="col0"><a href="../../c/math/atan2.html" class="wikilink1" title="c:math:atan2">atan2</a></td><td class="col1">arc tangent, using signs to determine quadrants</td>
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<td class="col0"><a href="../../c/math/ceil.html" class="wikilink1" title="c:math:ceil">ceil</a></td><td class="col1">the smallest integer not less than a certain value</td>
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<td class="col0"><a href="../../c/math/cos.html" class="wikilink1" title="c:math:cos">cos</a></td><td class="col1">cosine</td>
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<td class="col0"><a href="../../c/math/cosh.html" class="wikilink1" title="c:math:cosh">cosh</a></td><td class="col1">hyperbolic cosine</td>
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<td class="col0"><a href="../../c/math/div.html" class="wikilink1" title="c:math:div">div</a></td><td class="col1">returns the quotient and remainder of a division</td>
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<td class="col0"><a href="../../c/math/exp.html" class="wikilink1" title="c:math:exp">exp</a></td><td class="col1">returns “e” raised to a given power</td>
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<td class="col0"><a href="../../c/math/fabs.html" class="wikilink1" title="c:math:fabs">fabs</a></td><td class="col1">absolute value for floating-point numbers</td>
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<td class="col0"><a href="../../c/math/floor.html" class="wikilink1" title="c:math:floor">floor</a></td><td class="col1">returns the largest integer not greater than a given value</td>
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<td class="col0"><a href="../../c/math/fmod.html" class="wikilink1" title="c:math:fmod">fmod</a></td><td class="col1">returns the remainder of a division</td>
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<td class="col0"><a href="../../c/math/frexp.html" class="wikilink1" title="c:math:frexp">frexp</a></td><td class="col1">decomposes a number into scientific notation</td>
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<td class="col0"><a href="../../c/math/labs.html" class="wikilink1" title="c:math:labs">labs</a></td><td class="col1">absolute value for long integers</td>
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<td class="col0"><a href="../../c/math/ldexp.html" class="wikilink1" title="c:math:ldexp">ldexp</a></td><td class="col1">computes a number in scientific notation</td>
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<td class="col0"><a href="../../c/math/ldiv.html" class="wikilink1" title="c:math:ldiv">ldiv</a></td><td class="col1">returns the quotient and remainder of a division, in long integer form</td>
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<td class="col0"><a href="../../c/math/log.html" class="wikilink1" title="c:math:log">log</a></td><td class="col1">natural logarithm (to base e)</td>
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<td class="col0"><a href="../../c/math/log10.html" class="wikilink1" title="c:math:log10">log10</a></td><td class="col1">common logarithm (to base 10)</td>
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<td class="col0"><a href="../../c/math/modf.html" class="wikilink1" title="c:math:modf">modf</a></td><td class="col1">decomposes a number into integer and fractional parts</td>
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<td class="col0"><a href="../../c/math/pow.html" class="wikilink1" title="c:math:pow">pow</a></td><td class="col1">returns a given number raised to another number</td>
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<td class="col0"><a href="../../c/math/sin.html" class="wikilink1" title="c:math:sin">sin</a></td><td class="col1">sine</td>
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<td class="col0"><a href="../../c/math/sinh.html" class="wikilink1" title="c:math:sinh">sinh</a></td><td class="col1">hyperbolic sine</td>
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<td class="col0"><a href="../../c/math/sqrt.html" class="wikilink1" title="c:math:sqrt">sqrt</a></td><td class="col1">square root</td>
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<td class="col0"><a href="../../c/math/tan.html" class="wikilink1" title="c:math:tan">tan</a></td><td class="col1">tangent</td>
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<td class="col0"><a href="../../c/math/tanh.html" class="wikilink1" title="c:math:tanh">tanh</a></td><td class="col1">hyperbolic tangent</td>
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<h5><a name="compiling_with_gcc" id="compiling_with_gcc">Compiling with gcc</a></h5>
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In order to use some of the above functions, certain versions of the gcc compiler require the math library to be explicitly linked in using the <code>-lm</code> command-line option.
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