Files
mruby-mruby/mrblib/numeric.rb
T
Yukihiro "Matz" Matsumoto ec1f9860b1 mrblib: add parentheses to method calls with used return values
added parentheses to all `to_enum` and `super` calls where the return
value is used (returned, assigned, or passed to another method). this
makes the code style consistent with the guideline that method calls
should use parentheses when their return values are consumed.

changes:
- return to_enum :symbol -> return to_enum(:symbol)
- return to_enum :symbol, arg -> return to_enum(:symbol, arg)
- super message, name -> super(message, name)

affected files: 10error.rb, array.rb, enum.rb, hash.rb, kernel.rb,
numeric.rb, range.rb

Co-authored-by: Claude <noreply@anthropic.com>
2025-12-11 18:09:06 +09:00

161 lines
2.6 KiB
Ruby

##
# Numeric
#
# ISO 15.2.7
class Numeric
include Comparable
##
# 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
##
class Integer
##
# Calls the given block once for each Integer
# from `self` downto `num`.
#
# ISO 15.2.8.3.15
def downto(num, &block)
return to_enum(:downto, num) unless block
i = self.to_i
while i >= num
block.call(i)
i -= 1
end
self
end
##
# Returns self + 1
#
# ISO 15.2.8.3.19
def next
self + 1
end
# ISO 15.2.8.3.21
alias succ next
##
# Calls the given block `self` times.
#
# ISO 15.2.8.3.22
def times(&block)
return to_enum(:times) unless block
i = 0
while i < self
block.call i
i += 1
end
self
end
##
# Calls the given block once for each Integer
# from `self` upto `num`.
#
# ISO 15.2.8.3.27
def upto(num, &block)
return to_enum(:upto, num) unless block
i = self.to_i
while i <= num
block.call(i)
i += 1
end
self
end
##
# Calls the given block from `self` to `num`
# incremented by `step` (default 1).
#
def step(num=nil, step=1, &block)
raise ArgumentError, "step can't be 0" if step == 0
return to_enum(:step, num, step) unless block
i = __coerce_step_counter(step)
if num == self || step.infinite?
block.call(i) if step > 0 && i <= (num||i) || step < 0 && i >= (num||-i)
elsif num == nil
while true
block.call(i)
i += step
end
elsif step > 0
while i <= num
block.call(i)
i += step
end
else
while i >= num
block.call(i)
i += step
end
end
self
end
end
class Float
##
# Calls the given block from `self` to `num`
# incremented by `step` (default 1).
#
def step(num=nil, step=1, &block)
raise ArgumentError, "step can't be 0" if step == 0
return to_enum(:step, num, step) unless block
i = self
if num == self || step.infinite?
block.call(i) if step > 0 && i <= (num||i) || step < 0 && i >= (num||-i)
elsif num == nil
while true
block.call(i)
i += step
end
elsif step > 0
while i <= num
block.call(i)
i += step
end
else
while i >= num
block.call(i)
i += step
end
end
self
end
end if Object.const_defined?(:Float)