chore: add index.js

Signed-off-by: Shabareesh Shetty <[email protected]>

Author: ShabiShett07

lib/node_modules/@stdlib/blas/ext/base/dnancusumkbn2/examples/index.js

@@ -0,0 +1,40 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2020 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 bernoulli = require( '@stdlib/random/base/bernoulli' );
+var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
+var Float64Array = require( '@stdlib/array/float64' );
+var dnancusumkbn2 = require( './../lib' );
+
+function rand() {
+	if ( bernoulli( 0.5 ) < 1 ) {
+		return discreteUniform( 0, 100 );
+	}
+	return NaN;
+}
+
+var x = filledarrayBy( 10, 'float64', rand );
+console.log( x );
+
+var y = new Float64Array( x.length );
+console.log( y );
+
+dnancusumkbn2( x.length, 0.0, x, 1, y, 1 );
+console.log( y );