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Author: stdlib-bot

CHANGELOG.md

@@ -44,6 +44,40 @@ This release closes the following issue:
 
 <!-- /.package -->
 
+<section class="package" id="stats-base-dists-arcsine-logpdf-unreleased">
+
+#### [@stdlib/stats/base/dists/arcsine/logpdf](https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/base/dists/arcsine/logpdf)
+
+<details>
+
+<section class="features">
+
+##### Features
+
+-   [`1d283b5`](https://github.com/stdlib-js/stdlib/commit/1d283b5f174dc2ec7770bd7be861cdb2f146027d) - add C implementation of `stats/base/dists/arcsine/logpdf` [(#3454)](https://github.com/stdlib-js/stdlib/pull/3454)
+
+</section>
+
+<!-- /.features -->
+
+<section class="issues">
+
+##### Closed Issues
+
+This release closes the following issue:
+
+[#3401](https://github.com/stdlib-js/stdlib/issues/3401)
+
+</section>
+
+<!-- /.issues -->
+
+</details>
+
+</section>
+
+<!-- /.package -->
+
 <section class="package" id="stats-base-dists-chisquare-unreleased">
 
 #### [@stdlib/stats/base/dists/chisquare](https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/stats/base/dists/chisquare)
@@ -196,9 +230,9 @@ A total of 3 issues were closed in this release:
 
 ### Closed Issues
 
-A total of 7 issues were closed in this release:
+A total of 8 issues were closed in this release:
 
-[#1619](https://github.com/stdlib-js/stdlib/issues/1619), [#1632](https://github.com/stdlib-js/stdlib/issues/1632), [#1633](https://github.com/stdlib-js/stdlib/issues/1633), [#3236](https://github.com/stdlib-js/stdlib/issues/3236), [#3237](https://github.com/stdlib-js/stdlib/issues/3237), [#3238](https://github.com/stdlib-js/stdlib/issues/3238), [#3384](https://github.com/stdlib-js/stdlib/issues/3384)
+[#1619](https://github.com/stdlib-js/stdlib/issues/1619), [#1632](https://github.com/stdlib-js/stdlib/issues/1632), [#1633](https://github.com/stdlib-js/stdlib/issues/1633), [#3236](https://github.com/stdlib-js/stdlib/issues/3236), [#3237](https://github.com/stdlib-js/stdlib/issues/3237), [#3238](https://github.com/stdlib-js/stdlib/issues/3238), [#3384](https://github.com/stdlib-js/stdlib/issues/3384), [#3401](https://github.com/stdlib-js/stdlib/issues/3401)
 
 </section>
 
@@ -208,14 +242,15 @@ A total of 7 issues were closed in this release:
 
 ### Contributors
 
-A total of 6 people contributed to this release. Thank you to the following contributors:
+A total of 7 people contributed to this release. Thank you to the following contributors:
 
 -   Athan Reines
 -   Kohantika Nath
 -   Neeraj Pathak
 -   Philipp Burckhardt
 -   Pratyush Kumar Chouhan
 -   Ruthwik Chikoti
+-   Vinit Pandit
 
 </section>
 
@@ -227,6 +262,7 @@ A total of 6 people contributed to this release. Thank you to the following cont
 
 <details>
 
+-   [`1d283b5`](https://github.com/stdlib-js/stdlib/commit/1d283b5f174dc2ec7770bd7be861cdb2f146027d) - **feat:** add C implementation of `stats/base/dists/arcsine/logpdf` [(#3454)](https://github.com/stdlib-js/stdlib/pull/3454) _(by Vinit Pandit, Philipp Burckhardt)_
 -   [`e7e0f46`](https://github.com/stdlib-js/stdlib/commit/e7e0f4690074d14b9e2b86a6bc3c61d75ce66ac0) - **feat:** add C implementation for arcsine CDF [(#3354)](https://github.com/stdlib-js/stdlib/pull/3354) _(by Philipp Burckhardt, Athan Reines, stdlib-bot)_
 -   [`ac06419`](https://github.com/stdlib-js/stdlib/commit/ac06419c2a8358dfd80818823f571077eb58958e) - **docs:** update related packages sections [(#3387)](https://github.com/stdlib-js/stdlib/pull/3387) _(by stdlib-bot)_
 -   [`f8dc5fc`](https://github.com/stdlib-js/stdlib/commit/f8dc5fce6476df26e8703b8af8028dfd1477a515) - **docs:** fix C lint errors [(#3249)](https://github.com/stdlib-js/stdlib/pull/3249) _(by Neeraj Pathak, Athan Reines)_

base/dists/arcsine/logpdf/README.md

@@ -147,6 +147,110 @@ for ( i = 0; i < 25; i++ ) {
 
 <!-- /.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/base/dists/arcsine/logpdf.h"
+```
+
+#### stdlib_base_dists_arcsine_logpdf( x, a, b )
+
+Evaluates the logarithm of the probability density function (PDF) for an arcsine distribution.
+
+```c
+double out = stdlib_base_dists_arcsine_logpdf( 2.0, 0.0, 4.0 );
+// returns ~-1.838
+```
+
+The function accepts the following arguments:
+
+-   **x**: `[in] double` input value.
+-   **a**: `[in] double` minimum support.
+-   **b**: `[in] double` maximum support.
+
+```c
+double stdlib_base_dists_arcsine_logpdf( const double x, const double a, const double b );
+```
+
+</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/base/dists/arcsine/logpdf.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+static double random_uniform( const double min, const double max ) {
+    double v = (double)rand() / ( (double)RAND_MAX + 1.0 );
+    return min + ( v*(max-min) );
+}
+
+int main( void ) {
+    double x;
+    double a;
+    double b;
+    double y;
+    int i;
+    
+    for ( i = 0; i < 25; i++ ) {
+        x = random_uniform( -10.0, 10.0 );
+        a = random_uniform( -20.0, 0.0 );
+        b = random_uniform( a, a+40.0 );
+        y = stdlib_base_dists_arcsine_logpdf( x, a, b );
+        printf( "x: %lf, a: %lf, b: %lf, ln(f(x;a,b)): %lf\n", x, a, b, y );
+    }
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.c -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
 <!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
 
 <section class="related">
@@ -166,3 +270,4 @@ for ( i = 0; i < 25; i++ ) {
 </section>
 
 <!-- /.links -->
+

base/dists/arcsine/logpdf/benchmark/benchmark.native.js

@@ -0,0 +1,73 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 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 resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var Float64Array = require( '@stdlib/array/float64' );
+var randu = require( '@stdlib/random/base/randu' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var logpdf = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+	'skip': ( logpdf instanceof Error )
+};
+
+
+// MAIN //
+
+bench( pkg, opts, function benchmark( b ) {
+	var len;
+	var min;
+	var max;
+	var x;
+	var y;
+	var i;
+
+	len = 100;
+	x = new Float64Array( len );
+	min = new Float64Array( len );
+	max = new Float64Array( len );
+	for ( i = 0; i < len; i++ ) {
+		x[ i ] = ( randu() * 20.0 ) - 10.0;
+		min[ i ] = ( randu() * 20.0 ) - 20.0;
+		max[ i ] = min[ i ] + ( randu() * 40.0 );
+	}
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		y = logpdf( x[ i % len ], min[ i % len ], max[ i % len ] );
+		if ( isnan( y ) ) {
+			b.fail( 'should not return NaN' );
+		}
+	}
+	b.toc();
+	if ( isnan( y ) ) {
+		b.fail( 'should not return NaN' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});