diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/README.md b/lib/node_modules/@stdlib/stats/strided/mskmidrange/README.md
new file mode 100644
index 000000000000..0b9af650b569
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/README.md
@@ -0,0 +1,187 @@
+
+
+# mskmidrange
+
+> Calculate the [mid-range][mid-range] of a strided array according to a mask.
+
+
+
+The [**mid-range**][mid-range], or **mid-extreme**, is the arithmetic mean of the maximum and minimum values in a data set. The measure is the midpoint of the range and a measure of central tendency.
+
+
+
+
+
+
+
+## Usage
+
+```javascript
+var mskmidrange = require( '@stdlib/stats/strided/mskmidrange' );
+```
+
+#### mskmidrange( N, x, strideX, mask, strideMask )
+
+Computes the [mid-range][mid-range] of a strided array according to a mask.
+
+```javascript
+var x = [ 1.0, -2.0, 4.0, 2.0 ];
+var mask = [ 0, 0, 1, 0 ];
+
+var v = mskmidrange( x.length, x, 1, mask, 1 );
+// returns 0.0
+```
+
+The function has the following parameters:
+
+- **N**: number of indexed elements.
+- **x**: input [`Array`][mdn-array] or [`typed array`][mdn-typed-array].
+- **strideX**: stride length for `x`.
+- **mask**: mask [`Array`][mdn-array] or [`typed array`][mdn-typed-array]. If a `mask` array element is `0`, the corresponding element in `x` is considered valid and **included** in computation. If a `mask` array element is `1`, the corresponding element in `x` is considered invalid/missing and **excluded** from computation.
+- **strideMask**: stride length for `mask`.
+
+The `N` and stride parameters determine which elements in the strided arrays are accessed at runtime. For example, to compute the [mid-range][mid-range] of every other element in `x`,
+
+```javascript
+var x = [ 1.0, 2.0, -7.0, -2.0, 4.0, 3.0, 5.0, 6.0 ];
+var mask = [ 0, 0, 0, 0, 0, 0, 1, 1 ];
+
+var v = mskmidrange( 4, x, 2, mask, 2 );
+// returns -1.5
+```
+
+Note that indexing is relative to the first index. To introduce offsets, use [`typed array`][mdn-typed-array] views.
+
+
+
+```javascript
+var Float64Array = require( '@stdlib/array/float64' );
+var Uint8Array = require( '@stdlib/array/uint8' );
+
+var x0 = new Float64Array( [ 2.0, 1.0, -2.0, -2.0, 3.0, 4.0, 5.0, 6.0 ] );
+var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+var mask0 = new Uint8Array( [ 0, 0, 0, 0, 0, 0, 1, 1 ] );
+var mask1 = new Uint8Array( mask0.buffer, mask0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+var v = mskmidrange( 4, x1, 2, mask1, 2 );
+// returns 1.0
+```
+
+#### mskmidrange.ndarray( N, x, strideX, offsetX, mask, strideMask, offsetMask )
+
+Computes the [mid-range][mid-range] of a strided array according to a mask and using alternative indexing semantics.
+
+```javascript
+var x = [ 1.0, -2.0, 4.0, 2.0 ];
+var mask = [ 0, 0, 1, 0 ];
+
+var v = mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, 0 );
+// returns 0.0
+```
+
+The function has the following additional parameters:
+
+- **offsetX**: starting index for `x`.
+- **offsetMask**: starting index for `mask`.
+
+While [typed array][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameters support indexing semantics based on starting indices. For example, to calculate the [mid-range][mid-range] of every other value in `x` starting from the second value
+
+```javascript
+var x = [ 2.0, 1.0, -2.0, -2.0, 3.0, 4.0, 5.0, 6.0 ];
+var mask = [ 0, 0, 0, 0, 0, 0, 1, 1 ];
+
+var v = mskmidrange.ndarray( 4, x, 2, 1, mask, 2, 1 );
+// returns 1.0
+```
+
+
+
+
+
+
+
+## Notes
+
+- If `N <= 0`, both functions return `NaN`.
+- Depending on the environment, the typed versions ([`dmskmidrange`][@stdlib/stats/strided/dmskmidrange], [`smskmidrange`][@stdlib/stats/strided/smskmidrange], 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]).
+
+
+
+
+
+
+
+## Examples
+
+
+
+```javascript
+var uniform = require( '@stdlib/random/array/uniform' );
+var bernoulli = require( '@stdlib/random/array/bernoulli' );
+var mskmidrange = require( '@stdlib/stats/strided/mskmidrange' );
+
+var x = uniform( 10, -50.0, 50.0, {
+ 'dtype': 'float64'
+});
+console.log( x );
+
+var mask = bernoulli( x.length, 0.2, {
+ 'dtype': 'uint8'
+});
+console.log( mask );
+
+var v = mskmidrange( x.length, x, 1, mask, 1 );
+console.log( v );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[mid-range]: https://en.wikipedia.org/wiki/Mid-range
+
+[mdn-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
+
+[@stdlib/array/base/accessor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/base/accessor
+
+[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
+
+[@stdlib/stats/strided/dmskmidrange]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/strided/dmskmidrange
+
+[@stdlib/stats/strided/smskmidrange]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/strided/smskmidrange
+
+
+
+
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/benchmark/benchmark.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/benchmark/benchmark.js
new file mode 100644
index 000000000000..55ea8c89b71e
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/benchmark/benchmark.js
@@ -0,0 +1,99 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var bernoulli = require( '@stdlib/random/array/bernoulli' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var mskmidrange = require( './../lib/mskmidrange.js' );
+
+
+// VARIABLES //
+
+var options = {
+ 'dtype': 'generic'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var mask = bernoulli( len, 0.2, options );
+ var x = uniform( len, -10.0, 10.0, options );
+ return benchmark;
+
+ function benchmark( b ) {
+ var v;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ if ( isnan( v ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnan( v ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+ f = createBenchmark( len );
+ bench( format( '%s:len=%d', pkg, len ), f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/benchmark/benchmark.ndarray.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/benchmark/benchmark.ndarray.js
new file mode 100644
index 000000000000..241a34940e4a
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/benchmark/benchmark.ndarray.js
@@ -0,0 +1,99 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var bernoulli = require( '@stdlib/random/array/bernoulli' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var format = require( '@stdlib/string/format' );
+var pkg = require( './../package.json' ).name;
+var mskmidrange = require( './../lib/ndarray.js' );
+
+
+// VARIABLES //
+
+var options = {
+ 'dtype': 'generic'
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var mask = bernoulli( len, 0.2, options );
+ var x = uniform( len, -10.0, 10.0, options );
+ return benchmark;
+
+ function benchmark( b ) {
+ var v;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ if ( isnan( v ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnan( v ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+ f = createBenchmark( len );
+ bench( format( '%s:len=%d', pkg, len ), f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/repl.txt b/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/repl.txt
new file mode 100644
index 000000000000..add7b301b93e
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/repl.txt
@@ -0,0 +1,116 @@
+
+{{alias}}( N, x, strideX, mask, strideMask )
+ Computes the mid-range of a strided array according to a mask.
+
+ 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 offsets, use typed
+ array views.
+
+ If a `mask` array element is `0`, the corresponding element in `x` is
+ considered valid and included in computation.
+
+ If a `mask` array element is `1`, the corresponding element in `x` is
+ considered invalid/missing and excluded from computation.
+
+ If `N <= 0`, the function returns `NaN`.
+
+ Parameters
+ ----------
+ N: integer
+ Number of indexed elements.
+
+ x: Array|TypedArray
+ Input array.
+
+ strideX: integer
+ Stride length for `x`.
+
+ mask: Array|TypedArray
+ Mask array.
+
+ strideMask: integer
+ Stride length for `mask`.
+
+ Returns
+ -------
+ out: number
+ Mid-range.
+
+ Examples
+ --------
+ // Standard Usage:
+ > var x = [ 1.0, -2.0, 4.0, 2.0 ];
+ > var mask = [ 0, 0, 1, 0 ];
+ > {{alias}}( x.length, x, 1, mask, 1 )
+ 0.0
+
+ // Using `N` and stride parameters:
+ > x = [ -2.0, 1.0, 1.0, -5.0, 2.0, -1.0, 4.0 ];
+ > mask = [ 0, 0, 0, 0, 0, 0, 1 ];
+ > {{alias}}( 3, x, 2, mask, 2 )
+ 0.0
+
+ // Using view offsets:
+ > var x0 = new {{alias:@stdlib/array/float64}}( [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0, 4.0 ] );
+ > var x1 = new {{alias:@stdlib/array/float64}}( x0.buffer, x0.BYTES_PER_ELEMENT*1 );
+ > var mask0 = new {{alias:@stdlib/array/uint8}}( [ 0, 0, 0, 0, 0, 0, 1 ] );
+ > var mask1 = new {{alias:@stdlib/array/uint8}}( mask0.buffer, mask0.BYTES_PER_ELEMENT*1 );
+ > {{alias}}( 3, x1, 2, mask1, 2 )
+ 0.0
+
+
+{{alias}}.ndarray( N, x, strideX, offsetX, mask, strideMask, offsetMask )
+ Computes the mid-range of a strided array according to a mask and using
+ alternative indexing semantics.
+
+ While typed array views mandate a view offset based on the underlying
+ buffer, the offset parameters support indexing semantics based on starting
+ indices.
+
+ Parameters
+ ----------
+ N: integer
+ Number of indexed elements.
+
+ x: Array|TypedArray
+ Input array.
+
+ strideX: integer
+ Stride length for `x`.
+
+ offsetX: integer
+ Starting index for `x`.
+
+ mask: Array|TypedArray
+ Mask array.
+
+ strideMask: integer
+ Stride length for `mask`.
+
+ offsetMask: integer
+ Starting index for `mask`.
+
+ Returns
+ -------
+ out: number
+ Mid-range.
+
+ Examples
+ --------
+ // Standard Usage:
+ > var x = [ 1.0, -2.0, 2.0, 4.0 ];
+ > var mask = [ 0, 0, 0, 1 ];
+ > {{alias}}.ndarray( x.length, x, 1, 0, mask, 1, 0 )
+ 0.0
+
+ // Using offset parameters:
+ > x = [ 1.0, -2.0, 3.0, 2.0, 5.0, -1.0, 4.0 ];
+ > mask = [ 0, 0, 0, 0, 0, 0, 1 ];
+ > {{alias}}.ndarray( 3, x, 2, 1, mask, 2, 1 )
+ 0.0
+
+ See Also
+ --------
+
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/types/index.d.ts b/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/types/index.d.ts
new file mode 100644
index 000000000000..6b93b3347a61
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/types/index.d.ts
@@ -0,0 +1,104 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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.
+*/
+
+// TypeScript Version: 4.1
+
+///
+
+import { NumericArray, Collection, AccessorArrayLike } from '@stdlib/types/array';
+
+/**
+* Input array.
+*/
+type InputArray = NumericArray | Collection | AccessorArrayLike;
+
+/**
+* Interface describing `mskmidrange`.
+*/
+interface Routine {
+ /**
+ * Computes the mid-range of a strided array according to a mask.
+ *
+ * @param N - number of indexed elements
+ * @param x - input array
+ * @param strideX - stride length for `x`
+ * @param mask - mask array
+ * @param strideMask - stride length for `mask`
+ * @returns mid-range
+ *
+ * @example
+ * var x = [ 1.0, -2.0, 4.0, 2.0 ];
+ * var mask = [ 0, 0, 1, 0 ];
+ *
+ * var v = mskmidrange( x.length, x, 1, mask, 1 );
+ * // returns 0.0
+ */
+ ( N: number, x: InputArray, strideX: number, mask: InputArray, strideMask: number ): number;
+
+ /**
+ * Computes the mid-range of a strided array according to a mask and using alternative indexing semantics.
+ *
+ * @param N - number of indexed elements
+ * @param x - input array
+ * @param strideX - stride length for `x`
+ * @param offsetX - `x` starting index
+ * @param mask - mask array
+ * @param strideMask - stride length for `mask`
+ * @param offsetMask - `mask` starting index
+ * @returns mid-range
+ *
+ * @example
+ * var x = [ 1.0, -2.0, 4.0, 2.0 ];
+ * var mask = [ 0, 0, 1, 0 ];
+ *
+ * var v = mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, 0 );
+ * // returns 0.0
+ */
+ ndarray( N: number, x: InputArray, strideX: number, offsetX: number, mask: InputArray, strideMask: number, offsetMask: number ): number;
+}
+
+/**
+* Computes the mid-range of a strided array according to a mask.
+*
+* @param N - number of indexed elements
+* @param x - input array
+* @param strideX - stride length for `x`
+* @param mask - mask array
+* @param strideMask - stride length for `mask`
+* @returns mid-range
+*
+* @example
+* var x = [ 1.0, -2.0, 4.0, 2.0 ];
+* var mask = [ 0, 0, 1, 0 ];
+*
+* var v = mskmidrange( x.length, x, 1, mask, 1 );
+* // returns 0.0
+*
+* @example
+* var x = [ 1.0, -2.0, 4.0, 2.0 ];
+* var mask = [ 0, 0, 1, 0 ];
+*
+* var v = mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, 0 );
+* // returns 0.0
+*/
+declare var mskmidrange: Routine;
+
+
+// EXPORTS //
+
+export = mskmidrange;
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/types/test.ts b/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/types/test.ts
new file mode 100644
index 000000000000..a3838b1e0cae
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/docs/types/test.ts
@@ -0,0 +1,250 @@
+/*
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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.
+*/
+
+import AccessorArray = require( '@stdlib/array/base/accessor' );
+import mskmidrange = require( './index' );
+
+
+// TESTS //
+
+// The function returns a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange( x.length, x, 1, mask, 1 ); // $ExpectType number
+ mskmidrange( x.length, new AccessorArray( x ), 1, new AccessorArray( mask ), 1 ); // $ExpectType number
+}
+
+// The compiler throws an error if the function is provided a first argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange( '10', x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( true, x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( false, x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( null, x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( undefined, x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( [], x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( {}, x, 1, mask, 1 ); // $ExpectError
+ mskmidrange( ( x: number ): number => x, x, 1, mask, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a second argument which is not a numeric array...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange( x.length, 10, 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, '10', 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, true, 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, false, 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, null, 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, undefined, 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, [ '1' ], 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, {}, 1, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, ( x: number ): number => x, 1, mask, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a third argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange( x.length, x, '10', mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, true, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, false, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, null, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, undefined, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, [], mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, {}, mask, 1 ); // $ExpectError
+ mskmidrange( x.length, x, ( x: number ): number => x, mask, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a fourth argument which is not a numeric array...
+{
+ const x = new Float64Array( 10 );
+
+ mskmidrange( x.length, x, 1, 10, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, '10', 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, true, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, false, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, null, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, undefined, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, [ '1' ], 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, {}, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, ( x: number ): number => x, 1 ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided a fifth argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange( x.length, x, 1, mask, '10' ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, true ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, false ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, null ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, undefined ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, [] ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, {} ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the function is provided an unsupported number of arguments...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange(); // $ExpectError
+ mskmidrange( x.length ); // $ExpectError
+ mskmidrange( x.length, x, 1 ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask ); // $ExpectError
+ mskmidrange( x.length, x, 1, mask, 1, 10 ); // $ExpectError
+}
+
+// Attached to main export is an `ndarray` method which returns a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, 0 ); // $ExpectType number
+ mskmidrange.ndarray( x.length, new AccessorArray( x ), 1, 0, new AccessorArray( mask ), 1, 0 ); // $ExpectType number
+}
+
+// The compiler throws an error if the `ndarray` method is provided a first argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( '10', x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( true, x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( false, x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( null, x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( undefined, x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( [], x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( {}, x, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( ( x: number ): number => x, x, 1, 0, mask, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a second argument which is not a numeric array...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( x.length, 10, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, '10', 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, true, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, false, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, null, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, undefined, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, [ '1' ], 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, {}, 1, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, ( x: number ): number => x, 1, 0, mask, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a third argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( x.length, x, '10', 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, true, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, false, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, null, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, undefined, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, [], 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, {}, 0, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, ( x: number ): number => x, 0, mask, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a fourth argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( x.length, x, 1, '10', mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, true, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, false, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, null, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, undefined, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, [], mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, {}, mask, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, ( x: number ): number => x, mask, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a fifth argument which is not a numeric array...
+{
+ const x = new Float64Array( 10 );
+
+ mskmidrange.ndarray( x.length, 1, 0, 10, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, '10', 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, true, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, false, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, null, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, undefined, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, [ '1' ], 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, {}, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, 1, 0, ( x: number ): number => x, 1, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a sixth argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, '10', 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, true, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, false, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, null, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, undefined, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, [], 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, {}, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, ( x: number ): number => x, 0 ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided a seventh argument which is not a number...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, '10' ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, true ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, false ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, null ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, undefined ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, [] ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, {} ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, ( x: number ): number => x ); // $ExpectError
+}
+
+// The compiler throws an error if the `ndarray` method is provided an unsupported number of arguments...
+{
+ const x = new Float64Array( 10 );
+ const mask = new Uint8Array( 10 );
+
+ mskmidrange.ndarray(); // $ExpectError
+ mskmidrange.ndarray( x.length ); // $ExpectError
+ mskmidrange.ndarray( x.length, x ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1 ); // $ExpectError
+ mskmidrange.ndarray( x.length, x, 1, 0, mask, 1, 0, 10 ); // $ExpectError
+}
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/examples/index.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/examples/index.js
new file mode 100644
index 000000000000..8a824fc0b748
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/examples/index.js
@@ -0,0 +1,36 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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 uniform = require( '@stdlib/random/array/uniform' );
+var bernoulli = require( '@stdlib/random/array/bernoulli' );
+var mskmidrange = require( './../lib' );
+
+var x = uniform( 10, -50.0, 50.0, {
+ 'dtype': 'float64'
+});
+console.log( x );
+
+var mask = bernoulli( x.length, 0.2, {
+ 'dtype': 'uint8'
+});
+console.log( mask );
+
+var v = mskmidrange( x.length, x, 1, mask, 1 );
+console.log( v );
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/accessors.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/accessors.js
new file mode 100644
index 000000000000..d2f0aebc1bd7
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/accessors.js
@@ -0,0 +1,117 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
+var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+
+
+// MAIN //
+
+/**
+* Computes the mid-range of a strided array according to a mask.
+*
+* @private
+* @param {PositiveInteger} N - number of indexed elements
+* @param {Object} x - input array object
+* @param {Collection} x.data - input array data
+* @param {Array} x.accessors - array element accessors
+* @param {integer} strideX - stride length for `x`
+* @param {NonNegativeInteger} offsetX - starting index for `x`
+* @param {Object} mask - mask array object
+* @param {Collection} mask.data - mask array data
+* @param {Array} mask.accessors - mask element accessors
+* @param {integer} strideMask - stride length for `mask`
+* @param {NonNegativeInteger} offsetMask - starting index for `mask`
+* @returns {number} mid-range
+*
+* @example
+* var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
+* var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
+*
+* var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0, 5.0, 6.0 ];
+* var mask = [ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 ];
+*
+* var v = mskmidrange( 5, arraylike2object( toAccessorArray( x ) ), 2, 1, arraylike2object( toAccessorArray( mask ) ), 2, 1 );
+* // returns 1.0
+*/
+function mskmidrange( N, x, strideX, offsetX, mask, strideMask, offsetMask ) {
+ var xbuf;
+ var mbuf;
+ var xget;
+ var mget;
+ var max;
+ var min;
+ var ix;
+ var im;
+ var v;
+ var i;
+
+ // Cache references to array data:
+ xbuf = x.data;
+ mbuf = mask.data;
+
+ // Cache references to element accessors:
+ xget = x.accessors[ 0 ];
+ mget = mask.accessors[ 0 ];
+
+ ix = offsetX;
+ im = offsetMask;
+ for ( i = 0; i < N; i++ ) {
+ if ( mget( mbuf, im ) === 0 ) {
+ break;
+ }
+ ix += strideX;
+ im += strideMask;
+ }
+ if ( i === N ) {
+ return NaN;
+ }
+ min = xget( xbuf, ix );
+ if ( isnan( min ) ) {
+ return min;
+ }
+ max = min;
+ i += 1;
+ for ( i; i < N; i++ ) {
+ ix += strideX;
+ im += strideMask;
+ if ( mget( mbuf, im ) ) {
+ continue;
+ }
+ v = xget( xbuf, ix );
+ if ( isnan( v ) ) {
+ return v;
+ }
+ if ( v < min || ( v === min && isNegativeZero( v ) ) ) {
+ min = v;
+ } else if ( v > max || ( v === max && isPositiveZero( v ) ) ) {
+ max = v;
+ }
+ }
+ return ( max + min ) / 2.0;
+}
+
+
+// EXPORTS //
+
+module.exports = mskmidrange;
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/index.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/index.js
new file mode 100644
index 000000000000..d351450e3feb
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/index.js
@@ -0,0 +1,54 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+/**
+* Compute the mid-range of a strided array according to a mask.
+*
+* @module @stdlib/stats/strided/mskmidrange
+*
+* @example
+* var mskmidrange = require( '@stdlib/stats/strided/mskmidrange' );
+*
+* var x = [ 1.0, -2.0, 4.0, 2.0 ];
+* var mask = [ 0, 0, 1, 0 ];
+*
+* var v = mskmidrange( x.length, x, 1, mask, 1 );
+* // returns 0.0
+*
+* @example
+* var mskmidrange = require( '@stdlib/stats/strided/mskmidrange' );
+*
+* var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0, 5.0, 6.0 ];
+* var mask = [ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 ];
+*
+* var v = mskmidrange.ndarray( 5, x, 2, 1, mask, 2, 1 );
+* // returns 1.0
+*/
+
+// MODULES //
+
+var mskmidrange = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = mskmidrange;
+
+// exports: { "ndarray": "mskmidrange.ndarray" }
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/main.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/main.js
new file mode 100644
index 000000000000..19f8b7215a1e
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/main.js
@@ -0,0 +1,35 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
+var mskmidrange = require( './mskmidrange.js' );
+var ndarray = require( './ndarray.js' );
+
+
+// MAIN //
+
+setReadOnly( mskmidrange, 'ndarray', ndarray );
+
+
+// EXPORTS //
+
+module.exports = mskmidrange;
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/mskmidrange.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/mskmidrange.js
new file mode 100644
index 000000000000..c1bc0b3d42a4
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/mskmidrange.js
@@ -0,0 +1,53 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var stride2offset = require( '@stdlib/strided/base/stride2offset' );
+var ndarray = require( './ndarray.js' );
+
+
+// MAIN //
+
+/**
+* Computes the mid-range of a strided array according to a mask.
+*
+* @param {PositiveInteger} N - number of indexed elements
+* @param {NumericArray} x - input array
+* @param {integer} strideX - stride length for `x`
+* @param {NumericArray} mask - mask array
+* @param {integer} strideMask - stride length for `mask`
+* @returns {number} mid-range
+*
+* @example
+* var x = [ 1.0, -2.0, 4.0, 2.0 ];
+* var mask = [ 0, 0, 1, 0 ];
+*
+* var v = mskmidrange( x.length, x, 1, mask, 1 );
+* // returns 0.0
+*/
+function mskmidrange( N, x, strideX, mask, strideMask ) {
+ return ndarray( N, x, strideX, stride2offset( N, strideX ), mask, strideMask, stride2offset( N, strideMask ) );
+}
+
+
+// EXPORTS //
+
+module.exports = mskmidrange;
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/ndarray.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/ndarray.js
new file mode 100644
index 000000000000..0825074b2b01
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/lib/ndarray.js
@@ -0,0 +1,109 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
+var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
+var accessors = require( './accessors.js' );
+
+
+// MAIN //
+
+/**
+* Computes the mid-range of a strided array according to a mask.
+*
+* @param {PositiveInteger} N - number of indexed elements
+* @param {NumericArray} x - input array
+* @param {integer} strideX - stride length for `x`
+* @param {NonNegativeInteger} offsetX - starting index for `x`
+* @param {NumericArray} mask - mask array
+* @param {integer} strideMask - stride length for `mask`
+* @param {NonNegativeInteger} offsetMask - starting index for `mask`
+* @returns {number} mid-range
+*
+* @example
+* var x = [ 2.0, 1.0, 2.0, -2.0, -2.0, 2.0, 3.0, 4.0, 5.0, 6.0 ];
+* var mask = [ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 ];
+*
+* var v = mskmidrange( 5, x, 2, 1, mask, 2, 1 );
+* // returns 1.0
+*/
+function mskmidrange( N, x, strideX, offsetX, mask, strideMask, offsetMask ) {
+ var max;
+ var min;
+ var ix;
+ var im;
+ var ox;
+ var om;
+ var v;
+ var i;
+
+ if ( N <= 0 ) {
+ return NaN;
+ }
+ ox = arraylike2object( x );
+ om = arraylike2object( mask );
+ if ( ox.accessorProtocol || om.accessorProtocol ) {
+ return accessors( N, ox, strideX, offsetX, om, strideMask, offsetMask );
+ }
+ ix = offsetX;
+ im = offsetMask;
+ for ( i = 0; i < N; i++ ) {
+ if ( mask[ im ] === 0 ) {
+ break;
+ }
+ ix += strideX;
+ im += strideMask;
+ }
+ if ( i === N ) {
+ return NaN;
+ }
+ min = x[ ix ];
+ if ( isnan( min ) ) {
+ return min;
+ }
+ max = min;
+ i += 1;
+ for ( i; i < N; i++ ) {
+ ix += strideX;
+ im += strideMask;
+ if ( mask[ im ] ) {
+ continue;
+ }
+ v = x[ ix ];
+ if ( isnan( v ) ) {
+ return v;
+ }
+ if ( v < min || ( v === min && isNegativeZero( v ) ) ) {
+ min = v;
+ } else if ( v > max || ( v === max && isPositiveZero( v ) ) ) {
+ max = v;
+ }
+ }
+ return ( max + min ) / 2.0;
+}
+
+
+// EXPORTS //
+
+module.exports = mskmidrange;
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/package.json b/lib/node_modules/@stdlib/stats/strided/mskmidrange/package.json
new file mode 100644
index 000000000000..75d7f38c7b59
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/package.json
@@ -0,0 +1,78 @@
+{
+ "name": "@stdlib/stats/strided/mskmidrange",
+ "version": "0.0.0",
+ "description": "Calculate the mid-range of a strided array according to a mask.",
+ "license": "Apache-2.0",
+ "author": {
+ "name": "The Stdlib Authors",
+ "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+ },
+ "contributors": [
+ {
+ "name": "The Stdlib Authors",
+ "url": "https://github.com/stdlib-js/stdlib/graphs/contributors"
+ }
+ ],
+ "main": "./lib",
+ "browser": "./lib/main.js",
+ "directories": {
+ "benchmark": "./benchmark",
+ "doc": "./docs",
+ "example": "./examples",
+ "lib": "./lib",
+ "test": "./test"
+ },
+ "types": "./docs/types",
+ "scripts": {},
+ "homepage": "https://github.com/stdlib-js/stdlib",
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/stdlib-js/stdlib.git"
+ },
+ "bugs": {
+ "url": "https://github.com/stdlib-js/stdlib/issues"
+ },
+ "dependencies": {},
+ "devDependencies": {},
+ "engines": {
+ "node": ">=0.10.0",
+ "npm": ">2.7.0"
+ },
+ "os": [
+ "aix",
+ "darwin",
+ "freebsd",
+ "linux",
+ "macos",
+ "openbsd",
+ "sunos",
+ "win32",
+ "windows"
+ ],
+ "keywords": [
+ "stdlib",
+ "stdmath",
+ "statistics",
+ "stats",
+ "mathematics",
+ "math",
+ "midrange",
+ "maximum",
+ "max",
+ "minimum",
+ "min",
+ "range",
+ "extremes",
+ "domain",
+ "extent",
+ "dispersion",
+ "strided",
+ "strided array",
+ "masked",
+ "mask",
+ "masked array",
+ "typed",
+ "array"
+ ],
+ "__stdlib__": {}
+}
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.js
new file mode 100644
index 000000000000..6b07498963e4
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.js
@@ -0,0 +1,38 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var mskmidrange = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof mskmidrange, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'attached to the main export is a method providing an ndarray interface', function test( t ) {
+ t.strictEqual( typeof mskmidrange.ndarray, 'function', 'method is a function' );
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.mskmidrange.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.mskmidrange.js
new file mode 100644
index 000000000000..60d32d5f94cb
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.mskmidrange.js
@@ -0,0 +1,434 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
+var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
+var Float64Array = require( '@stdlib/array/float64' );
+var Uint8Array = require( '@stdlib/array/uint8' );
+var mskmidrange = require( './../lib/mskmidrange.js' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof mskmidrange, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 5', function test( t ) {
+ t.strictEqual( mskmidrange.length, 5, 'has expected arity' );
+ t.end();
+});
+
+tape( 'the function calculates the mid-range of a strided array according to a mask', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, NaN, 5.0, 0.0, 3.0 ];
+ mask = [ 0, 0, 0, 1, 0, 0, 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( v, 0.5, 'returns expected value' );
+
+ x = [ -4.0, NaN, -5.0 ];
+ mask = [ 0, 1, 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( v, -4.5, 'returns expected value' );
+
+ x = [ -0.0, 0.0, NaN, -0.0 ];
+ mask = [ 0, 0, 1, 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
+
+ x = [ -4.0, 0.0, NaN, 5.0 ];
+ mask = [ 0, 0, 0, 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 1 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 1 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 1 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 0 ];
+ v = mskmidrange( x.length, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function calculates the mid-range of a strided array according to a mask (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, NaN, 5.0, 0.0, 3.0 ];
+ mask = [ 0, 0, 0, 1, 0, 0, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( v, 0.5, 'returns expected value' );
+
+ x = [ -4.0, NaN, -5.0 ];
+ mask = [ 0, 1, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( v, -4.5, 'returns expected value' );
+
+ x = [ -0.0, 0.0, NaN, -0.0 ];
+ mask = [ 0, 0, 1, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
+
+ x = [ -4.0, 0.0, NaN, 5.0 ];
+ mask = [ 0, 0, 0, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 1 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 1 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 1 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an `N` parameter less than or equal to `0`, the function returns `NaN`', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 3.0 ];
+ mask = [ 0, 0, 0, 0, 0 ];
+
+ v = mskmidrange( 0, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ v = mskmidrange( -1, x, 1, mask, 1 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an `N` parameter equal to `1`, the function returns the first indexed element', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 3.0 ];
+ mask = [ 0, 0, 0, 0, 0 ];
+
+ v = mskmidrange( 1, x, 1, mask, 1 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an `N` parameter equal to `1`, the function returns the first indexed element (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 3.0 ];
+ mask = [ 0, 0, 0, 0, 0 ];
+
+ v = mskmidrange( 1, toAccessorArray( x ), 1, toAccessorArray( mask ), 1 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports `stride` parameters', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 1.0, // 0
+ 2.0,
+ 2.0, // 1
+ -7.0,
+ -2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 2.0,
+ 5.0, // 4
+ 6.0
+ ];
+ mask = [
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 0,
+ 1, // 4
+ 1
+ ];
+
+ v = mskmidrange( 5, x, 2, mask, 2 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports `stride` parameters (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 1.0, // 0
+ 2.0,
+ 2.0, // 1
+ -7.0,
+ -2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 2.0,
+ 5.0, // 4
+ 6.0
+ ];
+ mask = [
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 0,
+ 1, // 4
+ 1
+ ];
+
+ v = mskmidrange( 5, toAccessorArray( x ), 2, toAccessorArray( mask ), 2 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports negative `stride` parameters', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 5.0, // 4
+ 6.0,
+ 1.0, // 3
+ 2.0,
+ 2.0, // 2
+ -7.0,
+ -2.0, // 1
+ 3.0,
+ 4.0, // 0
+ 2.0
+ ];
+ mask = [
+ 1, // 4
+ 1,
+ 0, // 3
+ 0,
+ 0, // 2
+ 0,
+ 0, // 1
+ 0,
+ 0, // 0
+ 0
+ ];
+
+ v = mskmidrange( 5, x, -2, mask, -2 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports negative `stride` parameters (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 5.0, // 4
+ 6.0,
+ 1.0, // 3
+ 2.0,
+ 2.0, // 2
+ -7.0,
+ -2.0, // 1
+ 3.0,
+ 4.0, // 0
+ 2.0
+ ];
+ mask = [
+ 1, // 4
+ 1,
+ 0, // 3
+ 0,
+ 0, // 2
+ 0,
+ 0, // 1
+ 0,
+ 0, // 0
+ 0
+ ];
+
+ v = mskmidrange( 5, toAccessorArray( x ), -2, toAccessorArray( mask ), -2 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports view offsets', function test( t ) {
+ var mask0;
+ var mask1;
+ var x0;
+ var x1;
+ var v;
+
+ x0 = new Float64Array([
+ 2.0,
+ 1.0, // 0
+ 2.0,
+ -2.0, // 1
+ -2.0,
+ 2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 6.0,
+ 5.0, // 4
+ 6.0
+ ]);
+ mask0 = new Uint8Array([
+ 0,
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 0,
+ 1, // 4
+ 1
+ ]);
+
+ x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+ mask1 = new Uint8Array( mask0.buffer, mask0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+ v = mskmidrange( 5, x1, 2, mask1, 2 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports view offsets (accessor)', function test( t ) {
+ var mask0;
+ var mask1;
+ var x0;
+ var x1;
+ var v;
+
+ x0 = new Float64Array([
+ 2.0,
+ 1.0, // 0
+ 2.0,
+ -2.0, // 1
+ -2.0,
+ 2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 6.0,
+ 5.0, // 4
+ 6.0
+ ]);
+ mask0 = new Uint8Array([
+ 0,
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 0,
+ 1, // 4
+ 1
+ ]);
+
+ x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+ mask1 = new Uint8Array( mask0.buffer, mask0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
+
+ v = mskmidrange( 5, toAccessorArray( x1 ), 2, toAccessorArray( mask1 ), 2 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.ndarray.js b/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.ndarray.js
new file mode 100644
index 000000000000..9a7d7e0aa220
--- /dev/null
+++ b/lib/node_modules/@stdlib/stats/strided/mskmidrange/test/test.ndarray.js
@@ -0,0 +1,418 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
+var mskmidrange = require( './../lib/ndarray.js' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof mskmidrange, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 7', function test( t ) {
+ t.strictEqual( mskmidrange.length, 7, 'has expected arity' );
+ t.end();
+});
+
+tape( 'the function calculates the mid-range of a strided array according to a mask', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, NaN, 5.0, 0.0, 3.0 ];
+ mask = [ 0, 0, 0, 1, 0, 0, 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( v, 0.5, 'returns expected value' );
+
+ x = [ -4.0, NaN, -5.0 ];
+ mask = [ 0, 1, 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( v, -4.5, 'returns expected value' );
+
+ x = [ -0.0, 0.0, NaN, -0.0 ];
+ mask = [ 0, 0, 1, 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
+
+ x = [ -4.0, 0.0, NaN, 5.0 ];
+ mask = [ 0, 0, 0, 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 1 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 1 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 1 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 0 ];
+ v = mskmidrange( x.length, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function calculates the mid-range of a strided array according to a mask (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, NaN, 5.0, 0.0, 3.0 ];
+ mask = [ 0, 0, 0, 1, 0, 0, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( v, 0.5, 'returns expected value' );
+
+ x = [ -4.0, NaN, -5.0 ];
+ mask = [ 0, 1, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( v, -4.5, 'returns expected value' );
+
+ x = [ -0.0, 0.0, NaN, -0.0 ];
+ mask = [ 0, 0, 1, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
+
+ x = [ -4.0, 0.0, NaN, 5.0 ];
+ mask = [ 0, 0, 0, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN ];
+ mask = [ 1 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 1 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 1, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 1 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ x = [ NaN, NaN ];
+ mask = [ 0, 0 ];
+ v = mskmidrange( x.length, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an `N` parameter less than or equal to `0`, the function returns `NaN`', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 3.0 ];
+ mask = [ 0, 0, 0, 0, 0 ];
+
+ v = mskmidrange( 0, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ v = mskmidrange( -1, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( isnan( v ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an `N` parameter equal to `1`, the function returns the first indexed element', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 3.0 ];
+ mask = [ 0, 0, 0, 0, 0 ];
+
+ v = mskmidrange( 1, x, 1, 0, mask, 1, 0 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an `N` parameter equal to `1`, the function returns the first indexed element (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [ 1.0, -2.0, -4.0, 5.0, 3.0 ];
+ mask = [ 0, 0, 0, 0, 0 ];
+
+ v = mskmidrange( 1, toAccessorArray( x ), 1, 0, toAccessorArray( mask ), 1, 0 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports `stride` parameters', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 1.0, // 0
+ 2.0,
+ 2.0, // 1
+ -7.0,
+ -2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 2.0,
+ 5.0, // 4
+ 6.0
+ ];
+ mask = [
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 0,
+ 1, // 4
+ 1
+ ];
+
+ v = mskmidrange( 5, x, 2, 0, mask, 2, 0 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports `stride` parameters (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 1.0, // 0
+ 2.0,
+ 2.0, // 1
+ -7.0,
+ -2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 2.0,
+ 5.0, // 4
+ 6.0
+ ];
+ mask = [
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 0,
+ 1, // 4
+ 1
+ ];
+
+ v = mskmidrange( 5, toAccessorArray( x ), 2, 0, toAccessorArray( mask ), 2, 0 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports negative `stride` parameters', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 5.0, // 4
+ 6.0,
+ 1.0, // 3
+ 2.0,
+ 2.0, // 2
+ -7.0,
+ -2.0, // 1
+ 3.0,
+ 4.0, // 0
+ 2.0
+ ];
+ mask = [
+ 1, // 4
+ 1,
+ 0, // 3
+ 0,
+ 0, // 2
+ 0,
+ 0, // 1
+ 0,
+ 0, // 0
+ 0
+ ];
+
+ v = mskmidrange( 5, x, -2, 8, mask, -2, 8 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports negative `stride` parameters (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 5.0, // 4
+ 6.0,
+ 1.0, // 3
+ 2.0,
+ 2.0, // 2
+ -7.0,
+ -2.0, // 1
+ 3.0,
+ 4.0, // 0
+ 2.0
+ ];
+ mask = [
+ 1, // 4
+ 1,
+ 0, // 3
+ 0,
+ 0, // 2
+ 0,
+ 0, // 1
+ 0,
+ 0, // 0
+ 0
+ ];
+
+ v = mskmidrange( 5, toAccessorArray( x ), -2, 8, toAccessorArray( mask ), -2, 8 );
+
+ t.strictEqual( v, 1.0, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports `offset` parameters', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 2.0,
+ 1.0, // 0
+ 2.0,
+ -2.0, // 1
+ -2.0,
+ 2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 5.0,
+ 6.0 // 4
+ ];
+ mask = [
+ 0,
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 1,
+ 1 // 4
+ ];
+
+ v = mskmidrange( 5, x, 2, 1, mask, 2, 1 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports `offset` parameters (accessor)', function test( t ) {
+ var mask;
+ var x;
+ var v;
+
+ x = [
+ 2.0,
+ 1.0, // 0
+ 2.0,
+ -2.0, // 1
+ -2.0,
+ 2.0, // 2
+ 3.0,
+ 4.0, // 3
+ 5.0,
+ 6.0 // 4
+ ];
+ mask = [
+ 0,
+ 0, // 0
+ 0,
+ 0, // 1
+ 0,
+ 0, // 2
+ 0,
+ 0, // 3
+ 1,
+ 1 // 4
+ ];
+
+ v = mskmidrange( 5, toAccessorArray( x ), 2, 1, toAccessorArray( mask ), 2, 1 );
+ t.strictEqual( v, 1.0, 'returns expected value' );
+
+ t.end();
+});