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Round the content of a field

There are various possibilities to round an amount. The amount can be some data stored in a field available when the function is run.

Examples

*/ Rounds an amount to 0.05 cts. If a field is used, it must be available.

ard_05(12.5842) = 12.60

ard_05(do_montant)

*/ Rounds an amount to the preceding 0.05 cts. If a field is used, it must be available.

ard_05_floor(12.5842) = 12.55

ard_05_floor(do_montant)

*/ Rounds an amount to 0.01 ct.

ard(12.5842, 2) = 12.58

ard(do_montant, 2)

*/ Rounds an amount to 0.10 cts.

ard(12.5842, 4) = 12.6

ard(do_montant, 4)

*/ Rounds an amount to 0.50 cts before the next integer.

ard(12.5842, 5) = 12.5

ard(do_montant, 5)

*/ Rounds an amount to 0.05 cts before the next integer.

ard(12.5842, 6) = 12.95

ard(do_montant, 6)

*/ Rounds an amount to 1.

ard(12.5842, 7) = 13

ard(do_montant, 7)

*/ Rounds an amount to 1 before the next tenth.

ard(12.5842, 8) = 19

ard(do_montant, 8)

*/ Rounds an amount to 0.50 cts before the next tenth.

ard(12.5842, 9) = 19.5

ard(do_montant, 9)

*/ Rounds an amount to 0.05 cts before the next tenth.

ard(12.5842, 10) = 19.95

ard(do_montant, 10)

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