# sswap
> Interchange two single-precision floating-point vectors.
## Usage
```javascript
var sswap = require( '@stdlib/blas/sswap' );
```
#### sswap( x, y )
Interchanges two single-precision floating-point vectors `x` and `y`.
```javascript
var Float32Array = require( '@stdlib/array/float32' );
var array = require( '@stdlib/ndarray/array' );
var x = array( new Float32Array( [ 4.0, 2.0, -3.0, 5.0, -1.0 ] ) );
var y = array( new Float32Array( [ 2.0, 6.0, -1.0, -4.0, 8.0 ] ) );
sswap( x, y );
var xbuf = x.data;
// returns [ 2.0, 6.0, -1.0, -4.0, 8.0 ]
var ybuf = y.data;
// returns [ 4.0, 2.0, -3.0, 5.0, -1.0 ]
```
The function has the following parameters:
- **x**: a 1-dimensional [`ndarray`][@stdlib/ndarray/array] whose underlying data type is `float32`.
- **y**: a 1-dimensional [`ndarray`][@stdlib/ndarray/array] whose underlying data type is `float32`.
## Notes
- `sswap()` provides a higher-level interface to the [BLAS][blas] level 1 function [`sswap`][@stdlib/blas/base/sswap].
## Examples
```javascript
var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
var Float32Array = require( '@stdlib/array/float32' );
var array = require( '@stdlib/ndarray/array' );
var sswap = require( '@stdlib/blas/sswap' );
var x = array( new Float32Array( 10 ) );
var y = array( new Float32Array( 10 ) );
var rand1 = discreteUniform.factory( 0, 100 );
var rand2 = discreteUniform.factory( 0, 10 );
var i;
for ( i = 0; i < x.length; i++ ) {
x.set( i, rand1() );
y.set( i, rand2() );
}
console.log( x.data );
console.log( y.data );
sswap( x, y );
console.log( x.data );
console.log( y.data );
```
[blas]: http://www.netlib.org/blas
[@stdlib/blas/base/sswap]: https://www.npmjs.com/package/@stdlib/blas/tree/main/base/sswap
[@stdlib/ndarray/array]: https://www.npmjs.com/package/@stdlib/ndarray-array