# ceilsd
> Round a numeric value to the nearest number toward positive infinity with N significant figures.
## Usage
```javascript
var ceilsd = require( '@stdlib/math/base/special/ceilsd' );
```
#### ceilsd( x, n\[, b] )
Rounds a `numeric` value to the nearest `number` toward positive infinity with `n` significant figures.
```javascript
var v = ceilsd( 3.141592653589793, 5 );
// returns 3.1416
v = ceilsd( 3.141592653589793, 1 );
// returns 4.0
v = ceilsd( 12368.0, 2 );
// returns 13000.0
```
The default base is `10` (decimal). To round using a different base, provide a third argument.
```javascript
var v = ceilsd( 0.0313, 2, 2 );
// returns 0.046875
```
## Examples
```javascript
var randu = require( '@stdlib/random/base/randu' );
var ceilsd = require( '@stdlib/math/base/special/ceilsd' );
var x;
var y;
var i;
for ( i = 0; i < 100; i++ ) {
x = (randu()*10000.0) - 5000.0;
y = ceilsd( x, 5 );
console.log( 'x: %d. Rounded: %d.', x, y );
}
```