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eval: document recently added random(), hypot(), gcd().
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@ -83,6 +83,20 @@ Return 1.0 if @var{expr} is zero, 0.0 otherwise.
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@item pow(x, y)
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Compute the power of @var{x} elevated @var{y}, it is equivalent to
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"(@var{x})^(@var{y})".
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@item random(x)
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Return a pseudo random value between 0.0 and 1.0. @var{x} is the index of the
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internal variable which will be used to save the seed/state.
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@item hypot(x, y)
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This function is similar to the C function with the same name; it returns
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"sqrt(@var{x}*@var{x} + @var{y}*@var{y})", the length of the hypotenuse of a
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right triangle with sides of length @var{x} and @var{y}, or the distance of the
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point (@var{x}, @var{y}) from the origin.
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@item gcd(x, y)
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Return the greatest common divisor of @var{x} and @var{y}. If both @var{x} and
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@var{y} are 0 or either or both are less than zero then behavior is undefined.
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@end table
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Note that:
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