Module: TZInfo::OffsetRationals

Defined in:
lib/gems/activesupport-2.2.2/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/offset_rationals.rb

Overview

Provides a method for getting Rationals for a timezone offset in seconds. Pre-reduced rationals are returned for all the half-hour intervals between -14 and +14 hours to avoid having to call gcd at runtime.

Constant Summary collapse

@@rational_cache =

:nodoc:

{
      -50400 => RubyCoreSupport.rational_new!(-7,12), 
      -48600 => RubyCoreSupport.rational_new!(-9,16),
      -46800 => RubyCoreSupport.rational_new!(-13,24),
      -45000 => RubyCoreSupport.rational_new!(-25,48),
      -43200 => RubyCoreSupport.rational_new!(-1,2),
      -41400 => RubyCoreSupport.rational_new!(-23,48),
      -39600 => RubyCoreSupport.rational_new!(-11,24),
      -37800 => RubyCoreSupport.rational_new!(-7,16),
      -36000 => RubyCoreSupport.rational_new!(-5,12),
      -34200 => RubyCoreSupport.rational_new!(-19,48),
      -32400 => RubyCoreSupport.rational_new!(-3,8),
      -30600 => RubyCoreSupport.rational_new!(-17,48),
      -28800 => RubyCoreSupport.rational_new!(-1,3),
      -27000 => RubyCoreSupport.rational_new!(-5,16),
      -25200 => RubyCoreSupport.rational_new!(-7,24),
      -23400 => RubyCoreSupport.rational_new!(-13,48),
      -21600 => RubyCoreSupport.rational_new!(-1,4),
      -19800 => RubyCoreSupport.rational_new!(-11,48),
      -18000 => RubyCoreSupport.rational_new!(-5,24),
      -16200 => RubyCoreSupport.rational_new!(-3,16),
      -14400 => RubyCoreSupport.rational_new!(-1,6),
      -12600 => RubyCoreSupport.rational_new!(-7,48),
      -10800 => RubyCoreSupport.rational_new!(-1,8),
-9000 => RubyCoreSupport.rational_new!(-5,48),
-7200 => RubyCoreSupport.rational_new!(-1,12),
-5400 => RubyCoreSupport.rational_new!(-1,16),
-3600 => RubyCoreSupport.rational_new!(-1,24),
-1800 => RubyCoreSupport.rational_new!(-1,48),
    0 => RubyCoreSupport.rational_new!(0,1),
 1800 => RubyCoreSupport.rational_new!(1,48),
 3600 => RubyCoreSupport.rational_new!(1,24),
 5400 => RubyCoreSupport.rational_new!(1,16),
 7200 => RubyCoreSupport.rational_new!(1,12),
 9000 => RubyCoreSupport.rational_new!(5,48),
10800 => RubyCoreSupport.rational_new!(1,8),
12600 => RubyCoreSupport.rational_new!(7,48),
14400 => RubyCoreSupport.rational_new!(1,6),
16200 => RubyCoreSupport.rational_new!(3,16),
18000 => RubyCoreSupport.rational_new!(5,24),
19800 => RubyCoreSupport.rational_new!(11,48),
21600 => RubyCoreSupport.rational_new!(1,4),
23400 => RubyCoreSupport.rational_new!(13,48),
25200 => RubyCoreSupport.rational_new!(7,24),
27000 => RubyCoreSupport.rational_new!(5,16),
28800 => RubyCoreSupport.rational_new!(1,3),
30600 => RubyCoreSupport.rational_new!(17,48),
32400 => RubyCoreSupport.rational_new!(3,8),
34200 => RubyCoreSupport.rational_new!(19,48),
36000 => RubyCoreSupport.rational_new!(5,12),
37800 => RubyCoreSupport.rational_new!(7,16),
39600 => RubyCoreSupport.rational_new!(11,24),
41400 => RubyCoreSupport.rational_new!(23,48),
43200 => RubyCoreSupport.rational_new!(1,2),
45000 => RubyCoreSupport.rational_new!(25,48),
46800 => RubyCoreSupport.rational_new!(13,24),
48600 => RubyCoreSupport.rational_new!(9,16),
50400 => RubyCoreSupport.rational_new!(7,12)}

Class Method Summary collapse

Class Method Details

.rational_for_offset(offset) ⇒ Object

Returns a Rational expressing the fraction of a day that offset in seconds represents (i.e. equivalent to Rational(offset, 86400)).



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# File 'lib/gems/activesupport-2.2.2/lib/active_support/vendor/tzinfo-0.3.12/tzinfo/offset_rationals.rb', line 93

def rational_for_offset(offset)
  @@rational_cache[offset] || Rational(offset, 86400)      
end