smallest integer greater than or equal to a number
Array or expression
For an integer M, ceil(M) is the smallest integer greater than or equal to M.
The ceil(M) function on a matrix, M, computes the element-wise ceil of M. The result, R is formed as R[i,j] = ceil(M[i,j]).
M ≔ Matrix⁡2,3,'fill'=−3.6:
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