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mathjs

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Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

mathjs.org

josdejong/mathjs

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<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. --> # Function floor Round a value towards minus infinity. For matrices, the function is evaluated element wise. ## Syntax ```js math.floor(x) math.floor(x, n) ``` ### Parameters Parameter | Type | Description --------- | ---- | ----------- `x` | number &#124; BigNumber &#124; Fraction &#124; Complex &#124; Array &#124; Matrix | Number to be rounded `n` | number &#124; BigNumber &#124; Array | Number of decimals Default value: 0. ### Returns Type | Description ---- | ----------- number &#124; BigNumber &#124; Fraction &#124; Complex &#124; Array &#124; Matrix | Rounded value ## Examples ```js 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 math.floor(3.212, 2) // returns number 3.21 math.floor(3.288, 2) // returns number 3.28 math.floor(-4.212, 2) // returns number -4.22 math.floor(-4.782, 2) // returns number -4.79 const c = math.complex(3.24, -2.71) math.floor(c) // returns Complex 3 - 3i math.floor(c, 1) // returns Complex 3.2 - 2.8i math.floor([3.2, 3.8, -4.7]) // returns Array [3, 3, -5] math.floor([3.21, 3.82, -4.71], 1) // returns Array [3.2, 3.8, -4.8] ``` ## See also [ceil](ceil.md), [fix](fix.md), [round](round.md)