Function round #

Round a value towards the nearest integer. For matrices, the function is evaluated element wise.

Syntax #

math.round(x)
math.round(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.round(3.22)             // returns number 3
math.round(3.82)             // returns number 4
math.round(-4.2)             // returns number -4
math.round(-4.7)             // returns number -5
math.round(3.22, 1)          // returns number 3.2
math.round(3.88, 1)          // returns number 3.8
math.round(-4.21, 1)         // returns number -4.2
math.round(-4.71, 1)         // returns number -4.7
math.round(math.pi, 3)       // returns number 3.142
math.round(123.45678, 2)     // returns number 123.46

const c = math.complex(3.2, -2.7)
math.round(c)                // returns Complex 3 - 3i

math.round([3.2, 3.8, -4.7]) // returns Array [3, 4, -5]

See also #

ceil, fix, floor

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