module Calculations

# File lib/semester/core_ext.rb, line 2
def beginning_of_semester
  first_semester_month = [7, 1].detect { |m| m <= month }
  beginning_of_month.change(:month => first_semester_month)
end

# File lib/semester/core_ext.rb, line 8
def end_of_semester
  last_semester_month = [6, 12].detect { |m| m >= month }
  beginning_of_month.change(:month => last_semester_month).end_of_month
end

# File lib/semester/core_ext.rb, line 19
def next_semester
  months_since(6)
end

# File lib/semester/core_ext.rb, line 14
def prev_semester
  months_ago(6)
end