feat: add implementation for stats/strided/scurange

lib/node_modules/@stdlib/stats/strided/scurange/README.md

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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 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.
+
+-->
+
+# scurange
+
+> Compute the cumulative range of a single-precision floating-point strided array.
+
+<section class="intro">
+
+The **cumulative range** at index `i` is defined as the difference between the maximum and minimum values in the subarray `x[0..i]`. 
+
+</section>
+
+<!-- /.intro -->
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var scurange = require( '@stdlib/stats/strided/scurange' );
+```
+
+#### scurange( N, x, strideX, y, strideY )
+
+Computes the cumulative [range][range] of a single-precision floating-point strided array `x`.
+
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
+
+var x = new Float32Array( [ 1.0, -2.0, 2.0 ] );
+var y = new Float32Array( x.length );
+
+scurange( x.length, x, 1, y, 1 );
+// y => <Float32Array>[ 0.0, 3.0, 4.0 ]
+```
+
+The function has the following parameters:
+
+-   **N**: number of indexed elements.
+-   **x**: input [`Float32Array`][@stdlib/array/float32].
+-   **strideX**: index increment for `x`.
+-   **y**: output [`Float32Array`][@stdlib/array/float32].
+-   **strideY**: index increment for `y`.
+
+The `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to compute the cumulative [range][range] of every other element in `x` and store the results in every other element of y,
+
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
+
+var x = new Float32Array( [ 1.0, 2.0, 2.0, -7.0, -2.0, 3.0, 4.0, 2.0 ] );
+var y = new Float32Array( x.length );
+
+scurange( 4, x, 2, y, 2 );
+// y => <Float32Array>[ 0.0, 0.0, 1.0, 0.0, 4.0, 0.0, 6.0, 0.0 ]
+```
+
+Note that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
+
+<!-- eslint-disable stdlib/capitalized-comments -->
+
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
+
+// Input array:
+var x0 = new Float32Array( [ 1.0, -2.0, 3.0, -4.0, 5.0, -6.0 ] );
+
+// Create a view of x0 starting at the 2nd element:
+var x1 = new Float32Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 );
+
+// Create an output array:
+var y0 = new Float32Array( x0.length );
+
+// Create a view of y0 starting at the 2nd element:
+var y1 = new Float32Array( y0.buffer, y0.BYTES_PER_ELEMENT*1 );
+
+scurange( 3, x1, 2, y1, 2 );
+// y0 => <Float32Array>[ 0.0, 0.0, 0.0, 2.0, 0.0, 4.0 ]
+```
+
+#### scurange.ndarray
+
+```text
+scurange.ndarray( N, x, strideX, offsetX, y, strideY, offsetY )
+
+
+Computes the cumulative [range][range] of a single-precision floating-point strided array using alternative indexing semantics.
+
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
+
+var x = new Float32Array( [ 1.0, -2.0, 2.0 ] );
+var y = new Float32Array( x.length );
+
+scurange.ndarray( x.length, x, 1, 0, y, 1, 0 );
+// y => <Float32Array>[ 0.0, 3.0, 4.0 ]
+```
+
+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, the offset parameter supports indexing semantics based on a starting index. For example, to calculate the [range][range] for every other element in `x` starting from the second element and store the results in y starting from the first element:
+
+```javascript
+var Float32Array = require( '@stdlib/array/float32' );
+
+var x = new Float32Array( [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0 ] );
+var y = new Float32Array( 4 );
+
+scurange.ndarray( 4, x, 2, 1, y, 1, 0 );
+// y => <Float32Array>[ 0.0, 3.0, 4.0, 6.0 ]
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+## Notes
+
+-   If `N <= 0`, both functions return the output array `y` unchanged.
+-   If an indexed input value is `NaN`, all subsequent output values are `NaN`.
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
+var Float32Array = require( '@stdlib/array/float32' );
+var scurange = require( '@stdlib/stats/strided/scurange' );
+
+var x = discreteUniform( 10, -50, 50, {
+    'dtype': 'float32'
+});
+var y = new Float32Array( x.length );
+
+console.log( x );
+console.log( y );
+
+scurange( x.length, x, 1, y, 1 );
+
+console.log( y );
+```
+
+</section>
+
+<!-- /.examples -->
+
+<!-- C interface documentation. -->
+
+* * *
+
+<section class="c">
+
+## C APIs
+
+<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->
+
+<section class="intro">
+
+</section>
+
+<!-- /.intro -->
+
+<!-- C usage documentation. -->
+
+<section class="usage">
+
+### Usage
+
+```c
+#include "stdlib/stats/strided/scurange.h"
+```
+
+#### stdlib_strided_scurange( N, \*X, strideX, \*Y, strideY )
+
+Computes the cumulative [range][range] of a single-precision floating-point strided array `x`.
+
+```c
+const float x[] = { 1.0, -2.0, 3.0, -4.0 };
+float y[] = { 0.0, 0.0, 0.0, 0.0 };
+
+stdlib_strided_scurange( 4, x, 1, y, 1 );
+// y => <float>[ 0.0, 3.0, 4.0, 0.0 ]
+```
+
+The function accepts the following arguments:
+
+-   **N**: `[in] CBLAS_INT` number of indexed elements.
+-   **X**: `[in] float*` input array.
+-   **strideX**: `[in] CBLAS_INT` stride length for `X`.
+-   **Y**: `[out] float*` output array.
+-   **strideY**: `[in] CBLAS_INT` stride length for `Y`.
+
+```c
+void stdlib_strided_scurange( const CBLAS_INT N, const float *X, const CBLAS_INT strideX, float *Y, const CBLAS_INT strideY );
+```
+
+#### stdlib_strided_scurange_ndarray
+
+```c
+void stdlib_strided_scurange_ndarray(
+    const CBLAS_INT N,
+    const float *X,
+    const CBLAS_INT strideX,
+    const CBLAS_INT offsetX,
+    float *Y,
+    const CBLAS_INT strideY,
+    const CBLAS_INT offsetY
+);
+
+
+Computes the cumulative [range][range] of a single-precision floating-point strided array using alternative indexing semantics.
+
+```c
+const float x[] = { 1.0, -2.0, 3.0, -4.0 };
+float y[] = { 0.0, 0.0, 0.0, 0.0 };
+
+stdlib_strided_scurange_ndarray( 4, x, 1, 0, y, 1, 0 );
+// y => <float>[ 0.0, 3.0, 4.0, 0.0 ]
+```
+
+The function accepts the following arguments:
+
+-   **N**: `[in] CBLAS_INT` number of indexed elements.
+-   **X**: `[in] float*` input array.
+-   **strideX**: `[in] CBLAS_INT` stride length for `X`.
+-   **offsetX**: `[in] CBLAS_INT` starting index for `X`.
+-   **Y**: `[out] float*` output array.
+-   **strideY**: `[in] CBLAS_INT` stride length for `Y`.
+-   **offsetY**: `[in] CBLAS_INT` starting index for `Y`.
+
+```c
+void stdlib_strided_scurange_ndarray( const CBLAS_INT N, const float *X, const CBLAS_INT strideX, const CBLAS_INT offsetX, float *Y, const CBLAS_INT strideY, const CBLAS_INT offsetY );
+```
+
+</section>
+
+<!-- /.usage -->
+
+<!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<!-- C API usage examples. -->
+
+<section class="examples">
+
+### Examples
+
+```c
+#include "stdlib/stats/strided/scurange.h"
+#include <stdio.h>
+
+int main( void ) {
+    // Create a strided array:
+    const float x[] = { 1.0, -2.0, -3.0, 4.0, -5.0, -6.0, 7.0, 8.0 };
+
+    // Create an output array:
+    float y[] = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
+
+    // Specify the number of elements:
+    const int N = 4;
+
+    // Specify the stride lengths:
+    const int strideX = 2;
+    const int strideY = 1;
+
+    // Compute the cumulative range:
+    stdlib_strided_scurange( N, x, strideX, y, strideY );
+
+    // Print the result:
+    for ( int i = 0; i < N; i++ ) {
+        printf( "y[ %d ] = %lf\n", i, y[ i ] );
+    }
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+* * *
+
+## See Also
+
+-   <span class="package-name">[`@stdlib/stats/strided/scumax`][@stdlib/stats/strided/scumax]</span><span class="delimiter">: </span><span class="description">calculate the cumulative maximum value of a single-precision floating-point strided array.</span>
+-   <span class="package-name">[`@stdlib/stats/strided/scumin`][@stdlib/stats/strided/scumin]</span><span class="delimiter">: </span><span class="description">calculate the cumulative minimum value of a single-precision floating-point strided array.</span>
+-   <span class="package-name">[`@stdlib/stats/strided/srange`][@stdlib/stats/strided/srange]</span><span class="delimiter">: </span><span class="description">calculate the range of a single-precision floating-point strided array.</span>
+
+</section>
+
+<!-- /.related -->
+
+<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="links">
+
+[range]: https://en.wikipedia.org/wiki/Range_%28statistics%29
+
+[@stdlib/array/float32]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/float32
+
+[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
+
+<!-- <related-links> -->
+
+[@stdlib/stats/strided/scumax]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/strided/scumax
+
+[@stdlib/stats/strided/scumin]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/strided/scumin
+
+[@stdlib/stats/strided/srange]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/strided/srange
+
+<!-- </related-links> -->
+
+</section>
+
+<!-- /.links -->