time-to-botec

Benchmark sampling in different programming languages
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README.md (2792B)

      1 <!--
      2 
      3 @license Apache-2.0
      4 
      5 Copyright (c) 2020 The Stdlib Authors.
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      7 Licensed under the Apache License, Version 2.0 (the "License");
      8 you may not use this file except in compliance with the License.
      9 You may obtain a copy of the License at
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     11    http://www.apache.org/licenses/LICENSE-2.0
     12 
     13 Unless required by applicable law or agreed to in writing, software
     14 distributed under the License is distributed on an "AS IS" BASIS,
     15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     16 See the License for the specific language governing permissions and
     17 limitations under the License.
     18 
     19 -->
     20 
     21 # dswap
     22 
     23 > Interchange two double-precision floating-point vectors.
     24 
     25 <section class="intro">
     26 
     27 </section>
     28 
     29 <!-- /.intro -->
     30 
     31 <section class="usage">
     32 
     33 ## Usage
     34 
     35 ```javascript
     36 var dswap = require( '@stdlib/blas/dswap' );
     37 ```
     38 
     39 #### dswap( x, y )
     40 
     41 Interchanges two double-precision floating-point vectors `x` and `y`.
     42 
     43 ```javascript
     44 var Float64Array = require( '@stdlib/array/float64' );
     45 var array = require( '@stdlib/ndarray/array' );
     46 
     47 var x = array( new Float64Array( [ 4.0, 2.0, -3.0, 5.0, -1.0 ] ) );
     48 var y = array( new Float64Array( [ 2.0, 6.0, -1.0, -4.0, 8.0 ] ) );
     49 
     50 dswap( x, y );
     51 
     52 var xbuf = x.data;
     53 // returns <Float64Array>[ 2.0, 6.0, -1.0, -4.0, 8.0 ]
     54 
     55 var ybuf = y.data;
     56 // returns <Float64Array>[ 4.0, 2.0, -3.0, 5.0, -1.0 ]
     57 ```
     58 
     59 The function has the following parameters:
     60 
     61 -   **x**: a 1-dimensional [`ndarray`][@stdlib/ndarray/array] whose underlying data type is `float64`.
     62 -   **y**: a 1-dimensional [`ndarray`][@stdlib/ndarray/array] whose underlying data type is `float64`.
     63 
     64 </section>
     65 
     66 <!-- /.usage -->
     67 
     68 <section class="notes">
     69 
     70 ## Notes
     71 
     72 -   `dswap()` provides a higher-level interface to the [BLAS][blas] level 1 function [`dswap`][@stdlib/blas/base/dswap].
     73 
     74 </section>
     75 
     76 <!-- /.notes -->
     77 
     78 <section class="examples">
     79 
     80 ## Examples
     81 
     82 <!-- eslint no-undef: "error" -->
     83 
     84 ```javascript
     85 var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
     86 var Float64Array = require( '@stdlib/array/float64' );
     87 var array = require( '@stdlib/ndarray/array' );
     88 var dswap = require( '@stdlib/blas/dswap' );
     89 
     90 var x = array( new Float64Array( 10 ) );
     91 var y = array( new Float64Array( 10 ) );
     92 
     93 var rand1 = discreteUniform.factory( 0, 100 );
     94 var rand2 = discreteUniform.factory( 0, 10 );
     95 
     96 var i;
     97 for ( i = 0; i < x.length; i++ ) {
     98     x.set( i, rand1() );
     99     y.set( i, rand2() );
    100 }
    101 console.log( x.data );
    102 console.log( y.data );
    103 
    104 dswap( x, y );
    105 console.log( x.data );
    106 console.log( y.data );
    107 ```
    108 
    109 </section>
    110 
    111 <!-- /.examples -->
    112 
    113 <section class="links">
    114 
    115 [blas]: http://www.netlib.org/blas
    116 
    117 [@stdlib/blas/base/dswap]: https://www.npmjs.com/package/@stdlib/blas/tree/main/base/dswap
    118 
    119 [@stdlib/ndarray/array]: https://www.npmjs.com/package/@stdlib/ndarray-array
    120 
    121 </section>
    122 
    123 <!-- /.links -->