module JpStockRule
Constants
- PRICE_LIMITS
- TICK_SIZES
- VERSION
Public Class Methods
price_limit(base_price)
click to toggle source
Returns the limit of price change in a day.
# File lib/jp_stock_rule.rb, line 44 def self.price_limit(base_price) PRICE_LIMITS.detect { |upper_limit, | base_price < upper_limit }[1] end
round_price(price, topix100: false)
click to toggle source
Rounds the price to the tick.
JpStockRule.round_price(3001) # => 3000
# File lib/jp_stock_rule.rb, line 76 def self.round_price(price, topix100: false) tick = tick_size(price, topix100: topix100) (price / tick).to_i * tick end
tick_size(base_price, topix100: false)
click to toggle source
Returns the tick size.
# File lib/jp_stock_rule.rb, line 69 def self.tick_size(base_price, topix100: false) TICK_SIZES.detect { |upper_limit, | base_price <= upper_limit }[topix100 ? 1 : 2] end