* remove duplicated include
* Make BigDecimal#round with argument < 1 return Integer
Fixes [Bug #12780]
* Use a higher default precision for BigDecimal#power and #**
When a fractional power is given, increase the precision if the
precision isn't specified via power's second argument:
Float: increase by 15 (rough number of decimal precision in float)
BigDecimal: increase by adding similar precision modifier as done to
calculate the base precision.
Rational: double the precision, since a BigDecimal is created, but
the created BigDecimal uses the same precision.
Increasing the precision for these power calculations has the obvious
tradeoff of making the calculations slower.
Fixes Ruby Bug #17264
* Use DBLE_FIG for a Float value
* Version 2.0.1
Co-authored-by: pavel <pavel.rosicky@easy.cz>
Co-authored-by: Jeremy Evans <code@jeremyevans.net>
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