Receipt amount and discount rules - Revision history

David Ashton at 18:23, 29 August 2024

2024-08-29T18:23:16Z

← Older revision		Revision as of 12:23, 29 August 2024
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	==Cash Discounting Fee==		==Cash Discounting Fee==
	Credit card fee from a given amount. ~~You~~ want to add the credit card to an amount. Do this:		Credit card fee from a given amount. If you want to add the credit card fee to an amount. Do this:
	:fee = ( amount / ( 1.0 - percentage ) ) - amount		:fee = ( amount / ( 1.0 - percentage ) ) - amount
	:fee = applyAmountRule(fee)		:fee = applyAmountRule(fee)
	Credit card fee included in an amount. ~~Given~~ the total amount you want to know how much of it is the fee. Do this:		Credit card fee included in an amount. If you are given the total amount and you want to know how much of it is the fee. Do this:
	:fee = amount * percentage		:fee = amount * percentage
	:fee = applyAmountRule(fee)		:fee = applyAmountRule(fee)

David Ashton at 18:19, 29 August 2024

2024-08-29T18:19:31Z

← Older revision		Revision as of 12:19, 29 August 2024
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	The discount rule always go down unless it is within 0.999 of a penny.		The discount rule always go down unless it is within 0.999 of a penny.

	=== ~~Given~~ a receipt this is when the rules are applied ===		=== With a receipt this is when the rules are applied ===
	Discounts are calculated with fractional amounts during the calculation of modifier amounts, line amounts and the subtotal.		Discounts are calculated with fractional amounts (no rounding) during the calculation of modifier amounts, line amounts and the subtotal. These discount amounts are summed together and subtracted from the subtotal.

	The amount rule is applied to each modifier, each line in the receipt, the full price of the receipt, the subtotal, the tax, the alcohol tax, the credit card fee, and the service fee. All of these amounts go up unless they are within 0.001 of a penny.		The amount rule is applied to each modifier, each line in the receipt, the full price of the receipt, the subtotal, the tax, the alcohol tax, the credit card fee, and the service fee. All of these amounts go up unless they are within 0.001 of a penny.

	The full amount does not have any discounts ~~and~~ the subtotal does have discounts applied.		The full amount does not have any discounts but the subtotal does have discounts applied.

	The final discount is calculated as the full amount - subtotal and then the discount rule is applied to this ~~result~~. The ~~discounts~~ always go down unless ~~they are~~ within 0.999 of a penny.		The final discount is calculated as the full amount - subtotal and then the discount rule is applied to this difference. The discount always goes down unless it is within 0.999 of a penny.

David Ashton at 18:12, 29 August 2024

2024-08-29T18:12:37Z

← Older revision		Revision as of 12:12, 29 August 2024
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	~~This is how~~ the ~~register calculates~~ amounts:		=== These are the rules used to calculate amounts: ===

	There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount).		There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount).

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	This amount is multiplied by 0.01 and returned.		This amount is multiplied by 0.01 and returned.



	'''The discount amount rule does this:'''		'''The discount amount rule does this:'''
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	The discount rule always go down unless it is within 0.999 of a penny.		The discount rule always go down unless it is within 0.999 of a penny.

			=== Given a receipt this is when the rules are applied ===
	Discounts are calculated with fractional amounts during the calculation of modifier amounts, line amounts and the subtotal.		Discounts are calculated with fractional amounts during the calculation of modifier amounts, line amounts and the subtotal.

David Ashton at 18:06, 29 August 2024

2024-08-29T18:06:19Z

← Older revision		Revision as of 12:06, 29 August 2024
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	==Cash Discounting Fee==		==Cash Discounting Fee==
	Credit card fee from a given amount		Credit card fee from a given amount. You want to add the credit card to an amount. Do this:
	:fee = ( amount / ( 1.0 - percentage ) ) - amount		:fee = ( amount / ( 1.0 - percentage ) ) - amount
			:fee = applyAmountRule(fee)
			Credit card fee included in an amount. Given the total amount you want to know how much of it is the fee. Do this:
			:fee = amount * percentage
	:fee = applyAmountRule(fee)		:fee = applyAmountRule(fee)

David Ashton at 18:03, 29 August 2024

2024-08-29T18:03:50Z

← Older revision		Revision as of 12:03, 29 August 2024
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	There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount).		There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount).

	The amount rule function does this:		'''The amount rule function does this:'''

	Convert the amount to pennies by multiplying by 100.0		Convert the amount to pennies by multiplying by 100.0
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	The discount amount rule does this:
			'''The discount amount rule does this:'''

	Convert the amount to pennies by multiplying by 100.0		Convert the amount to pennies by multiplying by 100.0
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	There is one exception to these rules. If the menu has tax included in the price then the discount rule is used in all calculations. This is so items for example set to $7.00 don't end up being $7.01		There is one exception to these rules. If the menu has tax included in the price then the discount rule is used in all calculations. This is so items for example set to $7.00 don't end up being $7.01

			==Cash Discounting Fee==
			Credit card fee from a given amount
			:fee = ( amount / ( 1.0 - percentage ) ) - amount
			:fee = applyAmountRule(fee)

David Ashton: Created page with "This is how the register calculates amounts: There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount). The amount rule function does this: Convert the amount to pennies by multiplying by 100.0 If the fractional part is less than 0.001 then take the floor amount else take the ceiling amount. This amount is multiplied by 0.01 and returned. The discount amount rule does this: Convert the amount to pennies by multiplying by 100.0..."

2023-02-20T18:34:43Z

Created page with "This is how the register calculates amounts: There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount). The amount rule function does this: Convert the amount to pennies by multiplying by 100.0 If the fractional part is less than 0.001 then take the floor amount else take the ceiling amount. This amount is multiplied by 0.01 and returned. The discount amount rule does this: Convert the amount to pennies by multiplying by 100.0..."

New page

This is how the register calculates amounts:

There are two functions, applyAmountRule(amount) and applyDiscountAmountRule(discountAmount).

The amount rule function does this:

Convert the amount to pennies by multiplying by 100.0

If the fractional part is less than 0.001 then take the floor amount else take the ceiling amount.

This amount is multiplied by 0.01 and returned.

The discount amount rule does this:

Convert the amount to pennies by multiplying by 100.0

If the fractional part is greater than 0.999 then take the ceiling amount else take the floor amount.

This amount is multiplied by 0.01 and returned.

So the amount rule always goes up unless it is within 0.001 of a penny.

The discount rule always go down unless it is within 0.999 of a penny.

Discounts are calculated with fractional amounts during the calculation of modifier amounts, line amounts and the subtotal.

The amount rule is applied to each modifier, each line in the receipt, the full price of the receipt, the subtotal, the tax, the alcohol tax, the credit card fee, and the service fee. All of these amounts go up unless they are within 0.001 of a penny.

The full amount does not have any discounts and the subtotal does have discounts applied.

The final discount is calculated as the full amount - subtotal and then the discount rule is applied to this result. The discounts always go down unless they are within 0.999 of a penny.

There is one exception to these rules. If the menu has tax included in the price then the discount rule is used in all calculations. This is so items for example set to $7.00 don't end up being $7.01