Class: Integer

Inherits:
Object
  • Object
show all
Defined in:
lib/adlint/prelude.rb

Constant Summary collapse

SHIFT_MAX_BITS =

NOTE: To restrict the bit-shift width.

64

Instance Method Summary collapse

Instance Method Details

#arithmetic_right_shift(rhs) ⇒ Object 



114
115
116
 
# File 'lib/adlint/prelude.rb', line 114

def arithmetic_right_shift(rhs)
  rhs < 0 ? self : self >> [rhs, SHIFT_MAX_BITS].min
end

#left_shift(rhs) ⇒ Object 



118
119
120
 
# File 'lib/adlint/prelude.rb', line 118

def left_shift(rhs)
  rhs < 0 ? self : self << [rhs, SHIFT_MAX_BITS].min
end

#logical_right_shift(rhs) ⇒ Object 



103
104
105
106
107
108
109
110
111
112
 
# File 'lib/adlint/prelude.rb', line 103

def logical_right_shift(rhs)
  return self if rhs < 0
  bits = to_s(2)
  shift_width = [rhs, SHIFT_MAX_BITS].min
  if bits.length < shift_width
    0
  else
    ("0" * shift_width + bits[0..-(shift_width + 1)]).to_i(2)
  end
end