Class: Float

Inherits:
Object show all
Defined in:
lib/more/facets/typecast.rb,
lib/core/facets/numeric/round.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.cast_from(object) ⇒ Object 



157
158
159
160
161
162
 
# File 'lib/more/facets/typecast.rb', line 157

def cast_from(object)
  return super
rescue TypeCastException
  return object.to_f if object.respond_to? :to_f
  raise
end

Instance Method Details

#round_at(d) ⇒ Object

Rounds to the given decimal position.

4.555.round_at(0)  #=> 5.0
4.555.round_at(1)  #=> 4.6
4.555.round_at(2)  #=> 4.56
4.555.round_at(3)  #=> 4.555

CREDIT: Trans



60
61
62
 
# File 'lib/core/facets/numeric/round.rb', line 60

def round_at( d ) #d=0
  (self * (10.0 ** d)).round_off.to_f / (10.0 ** d)
end

#round_to(n) ⇒ Object

Rounds to the nearest _n_th degree.

4.555.round_to(1)     #=> 5.0
4.555.round_to(0.1)   #=> 4.6
4.555.round_to(0.01)  #=> 4.56
4.555.round_to(0)     #=> 4.555

CREDIT: Trans



73
74
75
76
 
# File 'lib/core/facets/numeric/round.rb', line 73

def round_to( n ) #n=1
  return self if n == 0
  (self * (1.0 / n)).round_off.to_f / (1.0 / n)
end