Round up numbers so it is divisible by m (in R)

Question

What is the easiest way to round up x so that it is divisible by m ?

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For example,

if x = 114, m =4, then the round up should be 116 

or

if x = 119, m=5, then the round up should be 120 

Answer 1

roundUp <- function(x,m) m*ceiling(x / m)
roundUp(119,5)
roundUp(114,4)

Answer 2

Divide the number by the require multiple, round the result to the next integer and multiply again by the required multiple.

E.g.: 116 / 5 = 23.1, round to 24, 24 · 5 = 120

Answer 3

Use modulo (%%):

roundUP <- function(x, m){x + m - x %% m}

roundUP(114, 4)
[1] 116
roundUP(119, 5)
[1] 120
roundUP(118, 5)
[1] 120
roundUP(113, 5)
[1] 115