# @stdlib/math-base-special-floorsd

0.2.1 • Public • Published

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# floorsd

Round a numeric value to the nearest number toward negative infinity with N significant figures.

## Installation

`npm install @stdlib/math-base-special-floorsd`

## Usage

`var floorsd = require( '@stdlib/math-base-special-floorsd' );`

#### floorsd( x, n[, b] )

Rounds a `numeric` value to the nearest `number` toward negative infinity with `n` significant figures.

```var v = floorsd( 3.141592653589793, 5 );
// returns 3.1415

v = floorsd( 3.141592653589793, 1 );
// returns 3.0

v = floorsd( 12368.0, 2 );
// returns 12000.0```

The default base is `10` (decimal). To round using a different base, provide a third argument.

```var v = floorsd( 0.0313, 2, 2 );
// returns 0.03125```

## Examples

```var randu = require( '@stdlib/random-base-randu' );
var floorsd = require( '@stdlib/math-base-special-floorsd' );

var x;
var y;
var i;

for ( i = 0; i < 100; i++ ) {
x = (randu()*10000.0) - 5000.0;
y = floorsd( x, 5 );
console.log( 'x: %d. Rounded: %d.', x, y );
}```

## Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

## Package Sidebar

### Install

`npm i @stdlib/math-base-special-floorsd`

### Repository

github.com/stdlib-js/math-base-special-floorsd

stdlib.io

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0.2.1

Apache-2.0

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