feat: add protocol support to stats/base/range

lib/node_modules/@stdlib/stats/base/range/README.md

@@ -38,7 +38,7 @@ The [**range**][range] is defined as the difference between the maximum and mini
 var range = require( '@stdlib/stats/base/range' );
 ```
 
-#### range( N, x, stride )
+#### range( N, x, strideX )
 
 Computes the [range][range] of a strided array `x`.
 
@@ -54,17 +54,14 @@ The function has the following parameters:
 
 -   **N**: number of indexed elements.
 -   **x**: input [`Array`][mdn-array] or [`typed array`][mdn-typed-array].
--   **stride**: index increment for `x`.
+-   **strideX**: stride length for `x`.
 
-The `N` and `stride` parameters determine which elements in `x` are accessed at runtime. For example, to compute the [range][range] of every other element in `x`,
+The `N` and `stride` parameters determine which elements in the strided array are accessed at runtime. For example, to compute the [range][range] of every other element in `x`,
 
 ```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 N = floor( x.length / 2 );
 
-var v = range( N, x, 2 );
+var v = range( 4, x, 2 );
 // returns 6.0
 ```
 
@@ -74,18 +71,15 @@ 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' );
 
 var x0 = new Float64Array( [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ] );
 var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
 
-var N = floor( x0.length / 2 );
-
-var v = range( N, x1, 2 );
+var v = range( 4, x1, 2 );
 // returns 6.0
 ```
 
-#### range.ndarray( N, x, stride, offset )
+#### range.ndarray( N, x, strideX, offsetX )
 
 Computes the [range][range] of a strided array using alternative indexing semantics.
 
@@ -99,17 +93,14 @@ var v = range.ndarray( N, x, 1, 0 );
 
 The function has the following additional parameters:
 
--   **offset**: starting index for `x`.
+-   **offsetX**: starting index for `x`.
 
-While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying `buffer`, the `offset` parameter supports indexing semantics based on a starting index. For example, to calculate the [range][range] for every other value in `x` starting from the second value
+While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to calculate the [range][range] for every other value in `x` starting from the second value
 
 ```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 N = floor( x.length / 2 );
 
-var v = range.ndarray( N, x, 2, 1 );
+var v = range.ndarray( 4, x, 2, 1 );
 // returns 6.0
 ```
 
@@ -123,6 +114,7 @@ var v = range.ndarray( N, x, 2, 1 );
 
 -   If `N <= 0`, both functions return `NaN`.
 -   Depending on the environment, the typed versions ([`drange`][@stdlib/stats/base/drange], [`srange`][@stdlib/stats/base/srange], etc.) are likely to be significantly more performant.
+-   Both functions support array-like objects having getter and setter accessors for array element access (e.g., [`@stdlib/array/base/accessor`][@stdlib/array/base/accessor]).
 
 </section>
 
@@ -137,16 +129,14 @@ var v = range.ndarray( N, x, 2, 1 );
 ```javascript
 var randu = require( '@stdlib/random/base/randu' );
 var round = require( '@stdlib/math/base/special/round' );
-var Float64Array = require( '@stdlib/array/float64' );
+var linspace = require( '@stdlib/array/base/linspace' );
 var range = require( '@stdlib/stats/base/range' );
 
 var x;
 var i;
 
-x = new Float64Array( 10 );
-for ( i = 0; i < x.length; i++ ) {
-    x[ i ] = round( (randu()*100.0) - 50.0 );
-}
+x = linspace(-50, 50, 10);
+x = x.map(round);
 console.log( x );
 
 var v = range( x.length, x, 1 );
@@ -185,6 +175,8 @@ console.log( v );
 
 [mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
 
+[@stdlib/array/base/accessor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/base/accessor
+
 <!-- <related-links> -->
 
 [@stdlib/stats/base/drange]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/base/drange

lib/node_modules/@stdlib/stats/base/range/benchmark/benchmark.js

@@ -21,8 +21,8 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var linspace = require( '@stdlib/array/base/linspace' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var pkg = require( './../package.json' ).name;
 var range = require( './../lib/range.js' );
@@ -38,13 +38,7 @@ var range = require( './../lib/range.js' );
 * @returns {Function} benchmark function
 */
 function createBenchmark( len ) {
-	var x;
-	var i;
-
-	x = [];
-	for ( i = 0; i < len; i++ ) {
-		x.push( ( randu()*20.0 ) - 10.0 );
-	}
+	var x = linspace( 0.0, len, len );
 	return benchmark;
 
 	function benchmark( b ) {

lib/node_modules/@stdlib/stats/base/range/benchmark/benchmark.ndarray.js

@@ -22,6 +22,7 @@
 
 var bench = require( '@stdlib/bench' );
 var randu = require( '@stdlib/random/base/randu' );
+var linspace = require( '@stdlib/array/linspace' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var pkg = require( './../package.json' ).name;
@@ -39,12 +40,7 @@ var range = require( './../lib/ndarray.js' );
 */
 function createBenchmark( len ) {
 	var x;
-	var i;
-
-	x = [];
-	for ( i = 0; i < len; i++ ) {
-		x.push( ( randu()*20.0 ) - 10.0 );
-	}
+	var x = linspace( 0.0, len, len );
 	return benchmark;
 
 	function benchmark( b ) {

lib/node_modules/@stdlib/stats/base/range/docs/repl.txt

@@ -1,92 +1,124 @@
+{{alias}}( N, x, strideX )
+
 
-{{alias}}( N, x, stride )
     Computes the range of a strided array.
 
-    The `N` and `stride` parameters determine which elements in `x` are accessed
-    at runtime.
 
-    Indexing is relative to the first index. To introduce an offset, use a typed
-    array view.
+    The `N` and stride parameters determine which elements in the strided 
+    array are accessed at runtime.
+
+
+    Indexing is relative to the first index. To introduce an offset, use a 
+    typed array view.
+
 
     If `N <= 0`, the function returns `NaN`.
 
+
     Parameters
     ----------
+
+
     N: integer
         Number of indexed elements.
 
+
     x: Array<number>|TypedArray
         Input array.
 
-    stride: integer
-        Index increment.
+
+    strideX: integer
+        Stride length.
+
 
     Returns
     -------
+
+
     out: number
         Range.
 
+
     Examples
     --------
+
+
     // Standard Usage:
     > var x = [ 1.0, -2.0, 2.0 ];
     > {{alias}}( x.length, x, 1 )
     4.0
 
-    // Using `N` and `stride` parameters:
+
+    // Using `N` and stride parameters:
     > x = [ -2.0, 1.0, 1.0, -5.0, 2.0, -1.0 ];
-    > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 );
     > var stride = 2;
-    > {{alias}}( N, x, stride )
+    > {{alias}}( 3, x, stride )
     4.0
 
+
     // Using view offsets:
     > var x0 = new {{alias:@stdlib/array/float64}}( [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0 ] );
     > var x1 = new {{alias:@stdlib/array/float64}}( x0.buffer, x0.BYTES_PER_ELEMENT*1 );
-    > N = {{alias:@stdlib/math/base/special/floor}}( x0.length / 2 );
     > stride = 2;
-    > {{alias}}( N, x1, stride )
+    > {{alias}}( 3, x1, stride )
     4.0
 
-{{alias}}.ndarray( N, x, stride, offset )
-    Computes the range of a strided array using alternative indexing semantics.
+
+{{alias}}.ndarray( N, x, strideX, offsetX )
+
+
+    Computes the range of a strided array using 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.
 
+
     Parameters
     ----------
+
+
     N: integer
         Number of indexed elements.
 
+
     x: Array<number>|TypedArray
         Input array.
 
-    stride: integer
-        Index increment.
 
-    offset: integer
+    strideX: integer
+        Stride length.
+
+
+    offsetX: integer
         Starting index.
 
+
     Returns
     -------
+
+
     out: number
         Range.
 
+
     Examples
     --------
+
+
     // Standard Usage:
     > var x = [ 1.0, -2.0, 2.0 ];
     > {{alias}}.ndarray( x.length, x, 1, 0 )
     4.0
 
+
     // Using offset parameter:
     > var x = [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0 ];
-    > var N = {{alias:@stdlib/math/base/special/floor}}( x.length / 2 );
-    > {{alias}}.ndarray( N, x, 2, 1 )
+    > {{alias}}.ndarray( 3, x, 2, 1 )
     4.0
 
-    See Also
-    --------
 
+    See Also
+    --------

lib/node_modules/@stdlib/stats/base/range/docs/types/index.d.ts

@@ -20,18 +20,20 @@
 
 /// <reference types="@stdlib/types"/>
 
-import { NumericArray } from '@stdlib/types/array';
+import { NumericArray, Collection, AccessorArrayLike } from '@stdlib/types/array';
 
 /**
 * Interface describing `range`.
 */
+type InputArray = NumericArray | Collection<number> | AccessorArrayLike<number>;
+
 interface Routine {
 	/**
 	* Computes the range of a strided array.
 	*
 	* @param N - number of indexed elements
 	* @param x - input array
-	* @param stride - stride length
+	* @param strideX - stride length
 	* @returns range
 	*
 	* @example
@@ -40,15 +42,15 @@ interface Routine {
 	* var v = range( x.length, x, 1 );
 	* // returns 4.0
 	*/
-	( N: number, x: NumericArray, stride: number ): number;
+	( N: number, x: InputArray, strideX: number ): number;
 
 	/**
 	* Computes the range of a strided array using alternative indexing semantics.
 	*
 	* @param N - number of indexed elements
 	* @param x - input array
-	* @param stride - stride length
-	* @param offset - starting index
+	* @param strideX - stride length
+	* @param offsetX - starting index
 	* @returns range
 	*
 	* @example
@@ -57,15 +59,15 @@ interface Routine {
 	* var v = range.ndarray( x.length, x, 1, 0 );
 	* // returns 4.0
 	*/
-	ndarray( N: number, x: NumericArray, stride: number, offset: number ): number;
+	ndarray( N: number, x: InputArray, strideX: number, offsetX: number ): number;
 }
 
 /**
 * Computes the range of a strided array.
 *
 * @param N - number of indexed elements
 * @param x - input array
-* @param stride - stride length
+* @param strideX - stride length
 * @returns range
 *
 * @example

lib/node_modules/@stdlib/stats/base/range/docs/types/test.ts

@@ -16,6 +16,7 @@
 * limitations under the License.
 */
 
+import AccessorArray = require( '@stdlib/array/base/accessor' );
 import range = require( './index' );
 
 
@@ -26,6 +27,7 @@ import range = require( './index' );
 	const x = new Float64Array( 10 );
 
 	range( x.length, x, 1 ); // $ExpectType number
+	range( x.length, new AccessorArray( x ), 1 ); // $ExpectType number
 }
 
 // The compiler throws an error if the function is provided a first argument which is not a number...
@@ -85,6 +87,7 @@ import range = require( './index' );
 	const x = new Float64Array( 10 );
 
 	range.ndarray( x.length, x, 1, 0 ); // $ExpectType number
+	range.ndarray( x.length, new AccessorArray( x ), 1, 0 ); // $ExpectType number
 }
 
 // The compiler throws an error if the `ndarray` method is provided a first argument which is not a number...