feat: add implementation

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Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/bradford/median/lib/index.js

@@ -0,0 +1,43 @@
+/**
+* @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';
+
+/**
+* Bradford distribution median.
+*
+* @module @stdlib/stats/base/dists/bradford/median
+*
+* @example
+* var median = require( '@stdlib/stats/base/dists/bradford/median' );
+*
+* var v = median( 0.1 );
+* // returns ~0.488
+*
+* v = median( 0.5 );
+* // returns ~0.449
+*/
+
+// MODULES //
+
+var median = require( './main.js' );
+
+
+// EXPORTS //
+
+module.exports = median;

lib/node_modules/@stdlib/stats/base/dists/bradford/median/lib/main.js

@@ -0,0 +1,72 @@
+/**
+* @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 isnan = require( '@stdlib/math/base/assert/is-nan' );
+var sqrt = require( '@stdlib/math/base/special/sqrt' );
+
+
+// MAIN //
+
+/**
+* Returns the median of a Bradford distribution.
+*
+* @param {PositiveNumber} c - shape parameter
+* @returns {NonNegativeNumber} median
+*
+* @example
+* var v = median( 0.1 );
+* // returns ~0.488
+*
+* @example
+* var v = median( 0.5 );
+* // returns ~0.449
+*
+* @example
+* var v = median( 10.0 );
+* // returns ~0.232
+*
+* @example
+* var v = median( 0.0 );
+* // returns NaN
+*
+* @example
+* var v = median( -1.0 );
+* // returns NaN
+*
+* @example
+* var v = median( NaN );
+* // returns NaN
+*/
+function median( c ) {
+	if (
+		isnan( c ) ||
+		c <= 0.0
+	) {
+		return NaN;
+	}
+	return ( sqrt( 1.0 + c ) - 1.0 ) / c;
+}
+
+
+// EXPORTS //
+
+module.exports = median;