class Float
Constants
- INFINITY
- NAN
Public Instance Methods
dup()
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# File lib/backports/2.4.0/float/dup.rb, line 2 def dup self end
next_float()
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# File lib/backports/2.2.0/float/next_float.rb, line 5 def next_float return Float::INFINITY if self == Float::INFINITY r = Backports.integer_to_float(Backports.float_to_integer(self)+1) r == 0 ? -0.0 : r # Map +0.0 to -0.0 end
prev_float()
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# File lib/backports/2.2.0/float/prev_float.rb, line 6 def prev_float return -Float::INFINITY if self == -Float::INFINITY Backports.integer_to_float(Backports.float_to_integer(self)-1) end
round_with_digits(ndigits=0)
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# File lib/backports/1.9.1/float/round.rb, line 6 def round_with_digits(ndigits=0) ndigits = Backports::coerce_to_int(ndigits) case when ndigits == 0 round_without_digits when ndigits < 0 p = 10 ** -ndigits p > abs ? 0 : (self / p).round * p else p = 10 ** ndigits prod = self * p prod.infinite? || prod.nan? ? self : prod.round.to_f / p end end