refactor: update blas/ext/base/gcusumkbn to follow current project conventions

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/README.md

@@ -59,21 +59,17 @@ The function has the following parameters:
 -   **N**: number of indexed elements.
 -   **sum**: initial sum.
 -   **x**: input [`Array`][mdn-array] or [`typed array`][mdn-typed-array].
--   **strideX**: index increment for `x`.
+-   **strideX**: stride length for `x`.
 -   **y**: output [`Array`][mdn-array] or [`typed array`][mdn-typed-array].
--   **strideY**: index increment for `y`.
+-   **strideY**: stride length for `y`.
 
-The `N` and `stride` parameters determine which elements in `x` and `y` are accessed at runtime. For example, to compute the cumulative sum of every other element in `x`,
+The `N` and stride parameters determine which elements in the strided arrays are accessed at runtime. For example, to compute the cumulative sum of every other element in the strided input array:
 
 ```javascript
-var floor = require( '@stdlib/math/base/special/floor' );
-
 var x = [ 1.0, 2.0, 2.0, -7.0, -2.0, 3.0, 4.0, 2.0 ];
 var y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
 
-var N = floor( x.length / 2 );
-
-var v = gcusumkbn( N, 0.0, x, 2, y, 1 );
+var v = gcusumkbn( 4, 0.0, x, 2, y, 1 );
 // y => [ 1.0, 3.0, 1.0, 5.0, 0.0, 0.0, 0.0, 0.0 ]
 ```
 
@@ -83,7 +79,6 @@ Note that indexing is relative to the first index. To introduce an offset, use [
 
 ```javascript
 var Float64Array = require( '@stdlib/array/float64' );
-var floor = require( '@stdlib/math/base/special/floor' );
 
 // Initial arrays...
 var x0 = new Float64Array( [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ] );
@@ -93,9 +88,7 @@ var y0 = new Float64Array( x0.length );
 var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
 var y1 = new Float64Array( y0.buffer, y0.BYTES_PER_ELEMENT*3 ); // start at 4th element
 
-var N = floor( x0.length / 2 );
-
-gcusumkbn( N, 0.0, x1, -2, y1, 1 );
+gcusumkbn( 4, 0.0, x1, -2, y1, 1 );
 // y0 => <Float64Array>[ 0.0, 0.0, 0.0, 4.0, 6.0, 4.0, 5.0, 0.0 ]
 ```
 
@@ -116,17 +109,13 @@ The function has the following additional parameters:
 -   **offsetX**: starting index for `x`.
 -   **offsetY**: starting index for `y`.
 
-While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying `buffer`, `offsetX` and `offsetY` parameters support indexing semantics based on a starting indices. For example, to calculate the cumulative sum of every other value in `x` starting from the second value and to store in the last `N` elements of `y` starting from the last element
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, offsetX and offsetY parameters support indexing semantics based on starting indices. For example, to calculate the cumulative sum of every other element in the strided input array starting from the second element and to store in the last `N` elements of the strided output array starting from the last element:
 
 ```javascript
-var floor = require( '@stdlib/math/base/special/floor' );
-
 var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ];
 var y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
 
-var N = floor( x.length / 2 );
-
-gcusumkbn.ndarray( N, 0.0, x, 2, 1, y, -1, y.length-1 );
+gcusumkbn.ndarray( 4, 0.0, x, 2, 1, y, -1, y.length-1 );
 // y => [ 0.0, 0.0, 0.0, 0.0, 5.0, 1.0, -1.0, 1.0 ]
 ```
 
@@ -152,20 +141,15 @@ gcusumkbn.ndarray( N, 0.0, x, 2, 1, y, -1, y.length-1 );
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var randu = require( '@stdlib/random/base/randu' );
-var round = require( '@stdlib/math/base/special/round' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var Float64Array = require( '@stdlib/array/float64' );
 var gcusumkbn = require( '@stdlib/blas/ext/base/gcusumkbn' );
 
-var y;
-var x;
-var i;
+var x = discreteUniform( 10.0, -100, 100, {
+    'dtype': 'float64'
+});
+var y = new Float64Array( x.length );
 
-x = new Float64Array( 10 );
-y = new Float64Array( x.length );
-for ( i = 0; i < x.length; i++ ) {
-    x[ i ] = round( randu()*100.0 );
-}
 console.log( x );
 console.log( y );
 

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/benchmark/benchmark.js

@@ -21,14 +21,22 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var gfill = require( '@stdlib/blas/ext/base/gfill' );
+var Float64Array = require( '@stdlib/array/float64' );
 var pkg = require( './../package.json' ).name;
 var gcusumkbn = require( './../lib/main.js' );
 
 
+// VARIABLES //
+
+var options = {
+	'dtype': 'float64'
+};
+
+
 // FUNCTIONS //
 
 /**
@@ -39,16 +47,8 @@ var gcusumkbn = require( './../lib/main.js' );
 * @returns {Function} benchmark function
 */
 function createBenchmark( len ) {
-	var y;
-	var x;
-	var i;
-
-	x = [];
-	y = [];
-	for ( i = 0; i < len; i++ ) {
-		x.push( ( randu()*20.0 ) - 10.0 );
-		y.push( 0.0 );
-	}
+	var x = uniform( len, -100, 100, options );
+	var y = new Float64Array( len );
 	return benchmark;
 
 	function benchmark( b ) {

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/benchmark/benchmark.ndarray.js

@@ -21,14 +21,22 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var gfill = require( '@stdlib/blas/ext/base/gfill' );
+var Float64Array = require( '@stdlib/array/float64' );
 var pkg = require( './../package.json' ).name;
 var gcusumkbn = require( './../lib/ndarray.js' );
 
 
+// VARIABLES //
+
+var options = {
+	'dtype': 'float64'
+};
+
+
 // FUNCTIONS //
 
 /**
@@ -39,16 +47,8 @@ var gcusumkbn = require( './../lib/ndarray.js' );
 * @returns {Function} benchmark function
 */
 function createBenchmark( len ) {
-	var x;
-	var y;
-	var i;
-
-	x = [];
-	y = [];
-	for ( i = 0; i < len; i++ ) {
-		x.push( ( randu()*20.0 ) - 10.0 );
-		y.push( 0.0 );
-	}
+	var x = uniform( len, -100, 100, options );
+	var y = new Float64Array( len );
 	return benchmark;
 
 	function benchmark( b ) {

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/docs/repl.txt

@@ -3,8 +3,8 @@
     Computes the cumulative sum of strided array elements using an improved
     Kahan–Babuška algorithm.
 
-    The `N` and `stride` parameters determine which elements in `x` and `y` are
-    accessed at runtime.
+    The `N` and stride parameters determine which elements in the strided
+    arrays are accessed at runtime.
 
     Indexing is relative to the first index. To introduce an offset, use a typed
     array view.
@@ -23,13 +23,13 @@
         Input array.
 
     strideX: integer
-        Index increment for `x`.
+        Stride length for `x`.
 
     y: Array<number>|TypedArray
         Output array.
 
     strideY: integer
-        Index increment for `y`.
+        Stride length for `y`.
 
     Returns
     -------
@@ -44,31 +44,30 @@
     > {{alias}}( x.length, 0.0, x, 1, y, 1 )
     [ 1.0, -1.0, 1.0 ]
 
-    // Using `N` and `stride` parameters:
+    // Using `N` and stride parameters:
     > x = [ -2.0, 1.0, 1.0, -5.0, 2.0, -1.0 ];
     > y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
-    > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 );
-    > {{alias}}( N, 0.0, x, 2, y, 2 )
+    > {{alias}}( 3, 0.0, x, 2, y, 2 )
     [ -2.0, 0.0, -1.0, 0.0, 1.0, 0.0 ]
 
     // Using view offsets:
     > var x0 = new {{alias:@stdlib/array/float64}}( [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0 ] );
     > var y0 = new {{alias:@stdlib/array/float64}}( x0.length );
     > var x1 = new {{alias:@stdlib/array/float64}}( x0.buffer, x0.BYTES_PER_ELEMENT*1 );
     > var y1 = new {{alias:@stdlib/array/float64}}( y0.buffer, y0.BYTES_PER_ELEMENT*3 );
-    > N = {{alias:@stdlib/math/base/special/floor}}( x0.length / 2 );
-    > {{alias}}( N, 0.0, x1, 2, y1, 1 )
+    > {{alias}}( 3, 0.0, x1, 2, y1, 1 )
     <Float64Array>[ -2.0, 0.0, -1.0 ]
     > y0
     <Float64Array>[ 0.0, 0.0, 0.0, -2.0, 0.0, -1.0 ]
 
+
 {{alias}}.ndarray( N, sum, x, strideX, offsetX, y, strideY, offsetY )
     Computes the cumulative sum of strided array elements using an improved
     Kahan–Babuška algorithm and alternative indexing semantics.
 
     While typed array views mandate a view offset based on the underlying
-    buffer, the `offset` parameter supports indexing semantics based on a
-    starting index.
+    buffer, the offset parameter support indexing semantics based on starting
+    indices.
 
     Parameters
     ----------
@@ -82,7 +81,7 @@
         Input array.
 
     strideX: integer
-        Index increment for `x`.
+        Stride length for `x`.
 
     offsetX: integer
         Starting index for `x`.
@@ -91,7 +90,7 @@
         Output array.
 
     strideY: integer
-        Index increment for `y`.
+        Stride length for `y`.
 
     offsetY: integer
         Starting index for `y`.
@@ -112,8 +111,7 @@
     // Advanced indexing:
     > x = [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0 ];
     > y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
-    > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 );
-    > {{alias}}.ndarray( N, 0.0, x, 2, 1, y, -1, y.length-1 )
+    > {{alias}}.ndarray( 3, 0.0, x, 2, 1, y, -1, y.length-1 )
     <Float64Array>[ 0.0, 0.0, 0.0, -1.0, 0.0, -2.0 ]
 
     See Also

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

@@ -18,20 +18,15 @@
 
 'use strict';
 
-var randu = require( '@stdlib/random/base/randu' );
-var round = require( '@stdlib/math/base/special/round' );
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
 var Float64Array = require( '@stdlib/array/float64' );
-var gcusumkbn = require( './../lib' );
+var gcusumkbn = require( '@stdlib/blas/ext/base/gcusumkbn' );
 
-var y;
-var x;
-var i;
+var x = discreteUniform( 10.0, -100, 100, {
+	'dtype': 'float64'
+});
+var y = new Float64Array( x.length );
 
-x = new Float64Array( 10 );
-y = new Float64Array( x.length );
-for ( i = 0; i < x.length; i++ ) {
-	x[ i ] = round( randu()*100.0 );
-}
 console.log( x );
 console.log( y );
 

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/lib/index.js

@@ -33,14 +33,12 @@
 * // y => [ 1.0, -1.0, 1.0 ]
 *
 * @example
-* var floor = require( '@stdlib/math/base/special/floor' );
 * var gcusumkbn = require( '@stdlib/blas/ext/base/gcusumkbn' );
 *
 * var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ];
 * var y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
-* var N = floor( x.length / 2 );
 *
-* gcusumkbn.ndarray( N, 0.0, x, 2, 1, y, 1, 0 );
+* gcusumkbn.ndarray( 4, 0.0, x, 2, 1, y, 1, 0 );
 * // y => [ 1.0, -1.0, 1.0, 5.0, 0.0, 0.0, 0.0, 0.0 ]
 */
 

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/lib/main.js

@@ -20,7 +20,8 @@
 
 // MODULES //
 
-var abs = require( '@stdlib/math/base/special/abs' );
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './ndarray.js' );
 
 
 // MAIN //
@@ -52,43 +53,9 @@ var abs = require( '@stdlib/math/base/special/abs' );
 * // returns [ 1.0, -1.0, 1.0 ]
 */
 function gcusumkbn( N, sum, x, strideX, y, strideY ) {
-	var ix;
-	var iy;
-	var s;
-	var v;
-	var t;
-	var c;
-	var i;
-
-	if ( N <= 0 ) {
-		return y;
-	}
-	if ( strideX < 0 ) {
-		ix = (1-N) * strideX;
-	} else {
-		ix = 0;
-	}
-	if ( strideY < 0 ) {
-		iy = (1-N) * strideY;
-	} else {
-		iy = 0;
-	}
-	s = sum;
-	c = 0.0;
-	for ( i = 0; i < N; i++ ) {
-		v = x[ ix ];
-		t = s + v;
-		if ( abs( s ) >= abs( v ) ) {
-			c += (s-t) + v;
-		} else {
-			c += (v-t) + s;
-		}
-		s = t;
-		y[ iy ] = s + c;
-		ix += strideX;
-		iy += strideY;
-	}
-	return y;
+	var ox = stride2offset( N, strideX );
+	var oy = stride2offset( N, strideY );
+	return ndarray( N, sum, x, strideX, ox, y, strideY, oy );
 }
 
 

lib/node_modules/@stdlib/blas/ext/base/gcusumkbn/lib/ndarray.js

@@ -47,13 +47,10 @@ var abs = require( '@stdlib/math/base/special/abs' );
 * @returns {NumericArray} output array
 *
 * @example
-* var floor = require( '@stdlib/math/base/special/floor' );
-*
 * var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ];
 * var y = [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ];
-* var N = floor( x.length / 2 );
 *
-* gcusumkbn( N, 0.0, x, 2, 1, y, 1, 0 );
+* gcusumkbn( 4, 0.0, x, 2, 1, y, 1, 0 );
 * // y => [ 1.0, -1.0, 1.0, 5.0, 0.0, 0.0, 0.0, 0.0 ]
 */
 function gcusumkbn( N, sum, x, strideX, offsetX, y, strideY, offsetY ) {