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Docstring fix: acosh() returns the hyperbolic arccosine, not the
hyperbolic cosine. Problem report via David Ascher by one of his students.
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‎Modules/cmathmodule.c‎

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@@ -64,7 +64,7 @@ static Py_complex c_acosh(x)
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static char c_acosh_doc [] =
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"acosh(x)\n\
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\n\
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Return the hyperbolic cosine of x.";
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Return the hyperbolic arccosine of x.";
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static Py_complex c_asin(x)

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