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CHANGELOG.md

@@ -671,6 +671,7 @@ This release closes the following issue:
 
 ##### Features
 
+-   [`d1ef4ee`](https://github.com/stdlib-js/stdlib/commit/d1ef4ee589cb2a7a0d8bbc0b37be3cf3b7a6aad2) - add boolean dtype support to `array/base/count-same-value-zero` [(#2474)](https://github.com/stdlib-js/stdlib/pull/2474)
 -   [`1ed81b7`](https://github.com/stdlib-js/stdlib/commit/1ed81b78fd6469d374c7b033f258e709934539b2) - add `array/base/count-same-value-zero` [(##1384)](#1384)
 
 </section>
@@ -2288,6 +2289,7 @@ A total of 13 people contributed to this release. Thank you to the following con
 
 <details>
 
+-   [`d1ef4ee`](https://github.com/stdlib-js/stdlib/commit/d1ef4ee589cb2a7a0d8bbc0b37be3cf3b7a6aad2) - **feat:** add boolean dtype support to `array/base/count-same-value-zero` [(#2474)](https://github.com/stdlib-js/stdlib/pull/2474) _(by Jaysukh Makvana, Athan Reines)_
 -   [`fd396b3`](https://github.com/stdlib-js/stdlib/commit/fd396b360cbca9c4c000d3f33eed5dfc18de6d6b) - **feat:** add boolean dtype support to `array/base/count-same-value` [(#2473)](https://github.com/stdlib-js/stdlib/pull/2473) _(by Jaysukh Makvana, Athan Reines)_
 -   [`29615af`](https://github.com/stdlib-js/stdlib/commit/29615af970796a43f65f4b00d29bd23a122f2208) - **feat:** add `slice` and `subarray` methods to `array/bool` [(#2472)](https://github.com/stdlib-js/stdlib/pull/2472) _(by Jaysukh Makvana, Athan Reines)_
 -   [`83044a1`](https://github.com/stdlib-js/stdlib/commit/83044a19f51a143c06d5bb59900d08e02f66e3c4) - **docs:** update namespace TypeScript declarations [(#2465)](https://github.com/stdlib-js/stdlib/pull/2465) _(by stdlib-bot, Athan Reines)_

base/count-same-value-zero/lib/main.js

@@ -21,10 +21,13 @@
 // MODULES //
 
 var isComplexTypedArray = require( './../../../base/assert/is-complex-typed-array' );
+var isBooleanArray = require( './../../../base/assert/is-booleanarray' );
 var isComplexLike = require( '@stdlib/assert/is-complex-like' );
+var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
 var real = require( '@stdlib/complex/real' );
 var imag = require( '@stdlib/complex/imag' );
 var reinterpret = require( '@stdlib/strided/base/reinterpret-complex' );
+var reinterpretBoolean = require( '@stdlib/strided/base/reinterpret-boolean' );
 var isAccessorArray = require( './../../../base/assert/is-accessor-array' );
 var resolveGetter = require( './../../../base/resolve-getter' );
 var isSameValueZero = require( '@stdlib/assert/is-same-value-zero' );
@@ -132,6 +135,43 @@ function complex( x, value ) {
 	return n;
 }
 
+/**
+* Counts the number of elements in a boolean array that are equal to a specified value.
+*
+* @private
+* @param {Collection} x - input array
+* @param {*} value - search value
+* @returns {NonNegativeInteger} number of elements that are equal to a specified value
+*
+* @example
+* var BooleanArray = require( '@stdlib/array/bool' );
+*
+* var x = new BooleanArray( [ true, false, true, false, true ] );
+*
+* var n = boolean( x, true );
+* // returns 3
+*/
+function boolean( x, value ) {
+	var view;
+	var n;
+	var v;
+	var i;
+
+	if ( !isBoolean( value ) ) {
+		return 0;
+	}
+	view = reinterpretBoolean( x, 0 );
+
+	v = ( value ) ? 1 : 0;
+	n = 0;
+	for ( i = 0; i < view.length; i++ ) {
+		if ( view[ i ] === v ) {
+			n += 1;
+		}
+	}
+	return n;
+}
+
 
 // MAIN //
 
@@ -160,6 +200,9 @@ function countSameValueZero( x, value ) {
 		if ( isComplexTypedArray( x, value ) ) {
 			return complex( x, value );
 		}
+		if ( isBooleanArray( x, value ) ) {
+			return boolean( x, value );
+		}
 		return accessors( x, value );
 	}
 	return indexed( x, value );

base/count-same-value-zero/test/test.js

@@ -23,6 +23,7 @@
 var tape = require( 'tape' );
 var Complex128 = require( '@stdlib/complex/float64/ctor' );
 var Complex128Array = require( './../../../complex128' );
+var BooleanArray = require( './../../../bool' );
 var Int32Array = require( './../../../int32' );
 var Float32Array = require( './../../../float32' );
 var toAccessorArray = require( './../../../base/to-accessor-array' );
@@ -153,6 +154,31 @@ tape( 'the function considers all NaN values to be identical (real typed array)'
 	t.end();
 });
 
+tape( 'the function counts the number of same values (boolean array)', function test( t ) {
+	var expected;
+	var actual;
+	var x;
+
+	x = new BooleanArray( [ true, false, true, false, true ] );
+	expected = 3;
+	actual = countSameValueZero( x, true );
+
+	t.strictEqual( actual, expected, 'returns expected value' );
+
+	x = new BooleanArray( [ true, false, true, false, true ] );
+	expected = 2;
+	actual = countSameValueZero( x, false );
+
+	t.strictEqual( actual, expected, 'returns expected value' );
+
+	x = new BooleanArray( [ true, false, true, false, true ] );
+	expected = 0;
+	actual = countSameValueZero( x, 'beep' );
+
+	t.strictEqual( actual, expected, 'returns expected value' );
+	t.end();
+});
+
 tape( 'the function counts the number of same values (complex typed array)', function test( t ) {
 	var expected;
 	var actual;