mathjs/docs/reference/functions/floor.md

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Function floor #

Round a value towards minus infinity. For matrices, the function is evaluated element wise.

Syntax #

math.floor(x)

Parameters #

Parameter	Type	Description
x	Number | BigNumber | Boolean | Complex | Array | Matrix	Number to be rounded

Returns #

Type	Description
Number | BigNumber | Complex | Array | Matrix	Rounded value

Examples #

math.floor(3.2);              // returns Number 3
math.floor(3.8);              // returns Number 3
math.floor(-4.2);             // returns Number -5
math.floor(-4.7);             // returns Number -5

var c = math.complex(3.2, -2.7);
math.floor(c);                // returns Complex 3 - 3i

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

See also #

ceil, fix, round