docs: add example using little-endian arrays

lib/node_modules/@stdlib/blas/base/daxpy-wasm/examples/little_endian_arrays.js

@@ -0,0 +1,74 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+var hasWebAssemblySupport = require( '@stdlib/assert/has-wasm-support' );
+var Memory = require( '@stdlib/wasm/memory' );
+var discreteUniform = require( '@stdlib/random/base/discrete-uniform' ).factory;
+var gfill = require( '@stdlib/blas/ext/base/gfill' );
+var gfillBy = require( '@stdlib/blas/ext/base/gfill-by' );
+var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
+var Float64ArrayLE = require( '@stdlib/array/little-endian-float64' );
+var daxpy = require( './../lib' );
+
+function main() {
+ if ( !hasWebAssemblySupport() ) {
+ console.error( 'Environment does not support WebAssembly.' );
+ return;
+ }
+ // Create a new memory instance with an initial size of 10 pages (640KiB) and a maximum size of 100 pages (6.4MiB):
+ var mem = new Memory({
+ 'initial': 10,
+ 'maximum': 100
+ });
+
+ // Create a BLAS routine:
+ var mod = new daxpy.Module( mem );
+ // returns <Module>
+
+ // Initialize the routine:
+ mod.initializeSync(); // eslint-disable-line node/no-sync
+
+ // Define a vector data type:
+ var dtype = 'float64';
+
+ // Specify a vector length:
+ var N = 5;
+
+ // Define pointers (i.e., byte offsets) for storing two vectors:
+ var xptr = 0;
+ var yptr = N * bytesPerElement( dtype );
+
+ // Create typed array views over module memory:
+ var x = new Float64ArrayLE( mod.memory.buffer, xptr, N );
+ var y = new Float64ArrayLE( mod.memory.buffer, yptr, N );
+
+ // Write values to module memory:
+ gfillBy( N, x, 1, discreteUniform( -10.0, 10.0 ) );
+ gfill( N, 1.0, y, 1 );
+
+ // Perform computation:
+ mod.ndarray( N, 5.0, xptr, 1, 0, yptr, 1, 0 );
+
+ // Print the results:
+ console.log( 'x[:] = [%s]', x.toString() );
+ console.log( 'y[:] = [%s]', y.toString() );
+}
+
+main();