mathjs/docs/reference/functions/ceil.md

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Function ceil #

Round a value towards plus infinity If x is complex, both real and imaginary part are rounded towards plus infinity. For matrices, the function is evaluated element wise.

Syntax #

math.ceil(x)
math.ceil(x, n)

Parameters #

Parameter	Type	Description
x	number | BigNumber | Fraction | Complex | Array | Matrix	Number to be rounded
n	number | BigNumber | Array	Number of decimals Default value: 0.

Returns #

Type	Description
number | BigNumber | Fraction | Complex | Array | Matrix	Rounded value

Examples #

math.ceil(3.2)               // returns number 4
math.ceil(3.8)               // returns number 4
math.ceil(-4.2)              // returns number -4
math.ceil(-4.7)              // returns number -4

math.ceil(3.212, 2)          // returns number 3.22
math.ceil(3.288, 2)          // returns number 3.29
math.ceil(-4.212, 2)         // returns number -4.21
math.ceil(-4.782, 2)         // returns number -4.78

const c = math.complex(3.24, -2.71)
math.ceil(c)                 // returns Complex 4 - 2i
math.ceil(c, 1)              // returns Complex 3.3 - 2.7i

math.ceil([3.2, 3.8, -4.7])  // returns Array [4, 4, -4]
math.ceil([3.21, 3.82, -4.71], 1)  // returns Array [3.3, 3.9, -4.7]

See also #

floor, fix, round