ath_toolkit/complex_history.html">History</a></span></dt>
</dl>
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<p>
    The following complex number algorithms are the inverses of trigonometric functions
    currently present in the C++ standard. Equivalents to these functions are part
    of the C99 standard, and are part of the <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf" target="_top">Technical
    Report on C++ Library Extensions</a>.
  </p>
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