diff options
Diffstat (limited to 'mrblib/numeric.rb')
| -rw-r--r-- | mrblib/numeric.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/mrblib/numeric.rb b/mrblib/numeric.rb index a5aa3e451..f3f1a2a7e 100644 --- a/mrblib/numeric.rb +++ b/mrblib/numeric.rb @@ -1,4 +1,38 @@ ## +# Numeric +# +# ISO 15.2.7 +class Numeric + ## + # Returns the receiver simply. + # + # ISO 15.2.7.4.1 + def +@ + self + end + + ## + # Returns the receiver's value, negated. + # + # ISO 15.2.7.4.2 + def -@ + 0 - self + end + + ## + # Returns the absolute value of the receiver. + # + # ISO 15.2.7.4.3 + def abs + if self < 0 + -self + else + self + end + end +end + +## # Integer # # ISO 15.2.8 |