{"id":15984161,"url":"https://github.com/stdlib-js/blas-ext-base-cfill","last_synced_at":"2026-04-18T11:05:19.446Z","repository":{"id":257499501,"uuid":"857959560","full_name":"stdlib-js/blas-ext-base-cfill","owner":"stdlib-js","description":"Fill a single-precision complex floating-point strided array with a specified scalar constant.","archived":false,"fork":false,"pushed_at":"2024-12-23T23:40:11.000Z","size":630,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"main","last_synced_at":"2025-02-10T05:23:11.164Z","etag":null,"topics":["array","assign","blas","broadcast","complex64","complex64array","constant","copy","equal","extended","fill","javascript","math","mathematics","node","node-js","nodejs","set","stdlib","strided"],"latest_commit_sha":null,"homepage":"https://github.com/stdlib-js/stdlib","language":"JavaScript","has_issues":false,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/stdlib-js.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":"CONTRIBUTING.md","funding":null,"license":"LICENSE","code_of_conduct":"CODE_OF_CONDUCT.md","threat_model":null,"audit":null,"citation":"CITATION.cff","codeowners":null,"security":"SECURITY.md","support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null},"funding":{"github":["stdlib-js"],"open_collective":"stdlib","tidelift":"npm/@stdlib/stdlib"}},"created_at":"2024-09-16T03:17:21.000Z","updated_at":"2024-12-23T23:34:59.000Z","dependencies_parsed_at":"2024-09-17T04:13:38.607Z","dependency_job_id":"ee79c479-4de8-400a-bb5e-360dd18d9f0b","html_url":"https://github.com/stdlib-js/blas-ext-base-cfill","commit_stats":{"total_commits":6,"total_committers":1,"mean_commits":6.0,"dds":0.0,"last_synced_commit":"a01db974864e808027ecdd2540165749588184ac"},"previous_names":["stdlib-js/blas-ext-base-cfill"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fblas-ext-base-cfill","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fblas-ext-base-cfill/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fblas-ext-base-cfill/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fblas-ext-base-cfill/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/stdlib-js","download_url":"https://codeload.github.com/stdlib-js/blas-ext-base-cfill/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247249600,"owners_count":20908211,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["array","assign","blas","broadcast","complex64","complex64array","constant","copy","equal","extended","fill","javascript","math","mathematics","node","node-js","nodejs","set","stdlib","strided"],"created_at":"2024-10-08T02:04:48.924Z","updated_at":"2026-04-18T11:05:19.439Z","avatar_url":"https://github.com/stdlib-js.png","language":"JavaScript","funding_links":["https://github.com/sponsors/stdlib-js","https://opencollective.com/stdlib","https://tidelift.com/funding/github/npm/@stdlib/stdlib"],"categories":[],"sub_categories":[],"readme":"\u003c!--\n\n@license Apache-2.0\n\nCopyright (c) 2024 The Stdlib Authors.\n\nLicensed under the Apache License, Version 2.0 (the \"License\");\nyou may not use this file except in compliance with the License.\nYou may obtain a copy of the License at\n\n   http://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing, software\ndistributed under the License is distributed on an \"AS IS\" BASIS,\nWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\nSee the License for the specific language governing permissions and\nlimitations under the License.\n\n--\u003e\n\n\n\u003cdetails\u003e\n  \u003csummary\u003e\n    About stdlib...\n  \u003c/summary\u003e\n  \u003cp\u003eWe believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.\u003c/p\u003e\n  \u003cp\u003eThe library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.\u003c/p\u003e\n  \u003cp\u003eWhen you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.\u003c/p\u003e\n  \u003cp\u003eTo join us in bringing numerical computing to the web, get started by checking us out on \u003ca href=\"https://github.com/stdlib-js/stdlib\"\u003eGitHub\u003c/a\u003e, and please consider \u003ca href=\"https://opencollective.com/stdlib\"\u003efinancially supporting stdlib\u003c/a\u003e. We greatly appreciate your continued support!\u003c/p\u003e\n\u003c/details\u003e\n\n# cfill\n\n[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] \u003c!-- [![dependencies][dependencies-image]][dependencies-url] --\u003e\n\n\u003e Fill a single-precision complex floating-point strided array with a specified scalar constant.\n\n\u003csection class=\"installation\"\u003e\n\n## Installation\n\n```bash\nnpm install @stdlib/blas-ext-base-cfill\n```\n\nAlternatively,\n\n-   To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).\n-   If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).\n-   For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).\n\nThe [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.\n\nTo view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.\n\n\u003c/section\u003e\n\n\u003csection class=\"usage\"\u003e\n\n## Usage\n\n```javascript\nvar cfill = require( '@stdlib/blas-ext-base-cfill' );\n```\n\n#### cfill( N, alpha, x, strideX )\n\nFills a single-precision complex floating-point strided array `x` with a specified scalar constant `alpha`.\n\n```javascript\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar Complex64 = require( '@stdlib/complex-float32-ctor' );\n\nvar x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );\n\nvar alpha = new Complex64( 10.0, 10.0 );\n\ncfill( x.length, alpha, x, 1 );\n// x =\u003e \u003cComplex64Array\u003e[ 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 ]\n```\n\nThe function has the following parameters:\n\n-   **N**: number of indexed elements.\n-   **alpha**: scalar constant.\n-   **x**: input [`Complex64Array`][@stdlib/array/complex64].\n-   **strideX**: stride length.\n\nThe `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to fill every other element:\n\n```javascript\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar Complex64 = require( '@stdlib/complex-float32-ctor' );\n\nvar x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );\n\nvar alpha = new Complex64( 10.0, 10.0 );\n\ncfill( 2, alpha, x, 2 );\n// x =\u003e \u003cComplex64Array\u003e[ 10.0, 10.0, 3.0, 4.0, 10.0, 10.0, 7.0, 8.0 ]\n```\n\nNote that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.\n\n```javascript\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar Complex64 = require( '@stdlib/complex-float32-ctor' );\n\n// Initial array:\nvar x0 = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );\n\n// Create an offset view:\nvar x1 = new Complex64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element\n\n// Define a scalar constant:\nvar alpha = new Complex64( 10.0, 10.0 );\n\n// Fill every other element:\ncfill( 2, alpha, x1, 2 );\n// x0 =\u003e \u003cComplex64Array\u003e[ 1.0, 2.0, 10.0, 10.0, 5.0, 6.0, 10.0, 10.0 ]\n```\n\n#### cfill.ndarray( N, alpha, x, strideX, offsetX )\n\nFills a single-precision complex floating-point strided array `x` with a specified scalar constant `alpha` using alternative indexing semantics.\n\n```javascript\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar Complex64 = require( '@stdlib/complex-float32-ctor' );\n\nvar x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );\n\nvar alpha = new Complex64( 10.0, 10.0 );\n\ncfill.ndarray( x.length, alpha, x, 1, 0 );\n// x =\u003e \u003cComplex64Array\u003e[ 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0, 10.0 ]\n```\n\nThe function has the following additional parameters:\n\n-   **offsetX**: starting index.\n\nWhile [`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 access only the last two elements of the strided array:\n\n```javascript\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar Complex64 = require( '@stdlib/complex-float32-ctor' );\n\nvar x = new Complex64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ] );\n\nvar alpha = new Complex64( 10.0, 10.0 );\n\ncfill.ndarray( 2, alpha, x, 1, 1 );\n// x =\u003e \u003cComplex64Array\u003e[ 1.0, 2.0, 10.0, 10.0, 10.0, 10.0 ]\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.usage --\u003e\n\n\u003csection class=\"notes\"\u003e\n\n## Notes\n\n-   If `N \u003c= 0`, both functions return the strided array unchanged.\n\n\u003c/section\u003e\n\n\u003c!-- /.notes --\u003e\n\n\u003csection class=\"examples\"\u003e\n\n## Examples\n\n\u003c!-- eslint no-undef: \"error\" --\u003e\n\n```javascript\nvar discreteUniform = require( '@stdlib/random-array-discrete-uniform' );\nvar Complex64Array = require( '@stdlib/array-complex64' );\nvar Complex64 = require( '@stdlib/complex-float32-ctor' );\nvar cfill = require( '@stdlib/blas-ext-base-cfill' );\n\nvar xbuf = discreteUniform( 20, -100, 100, {\n    'dtype': 'float32'\n});\nvar x = new Complex64Array( xbuf.buffer );\nvar alpha = new Complex64( 10.0, 10.0 );\n\ncfill( x.length, alpha, x, 1 );\nconsole.log( x.get( 0 ).toString() );\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.examples --\u003e\n\n\u003c!-- C interface documentation. --\u003e\n\n* * *\n\n\u003csection class=\"c\"\u003e\n\n## C APIs\n\n\u003c!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"intro\"\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.intro --\u003e\n\n\u003c!-- C usage documentation. --\u003e\n\n\u003csection class=\"usage\"\u003e\n\n### Usage\n\n```c\n#include \"stdlib/blas/ext/base/cfill.h\"\n```\n\n#### stdlib_strided_cfill( N, alpha, \\*X, strideX )\n\nFills a single-precision complex floating-point strided array `X` with a specified scalar constant `alpha`.\n\n```c\n#include \"stdlib/complex/float32/ctor.h\"\n\nfloat x[] = { 1.0f, 2.0f, 3.0f, 4.0f };\nconst stdlib_complex64_t alpha = stdlib_complex64( 2.0f, 2.0f );\n\nstdlib_strided_cfill( 2, alpha, (stdlib_complex64_t *)x, 1 );\n```\n\nThe function accepts the following arguments:\n\n-   **N**: `[in] CBLAS_INT` number of indexed elements.\n-   **alpha**: `[in] stdlib_complex64_t` scalar constant.\n-   **X**: `[out] stdlib_complex64_t*` input array.\n-   **strideX**: `[in] CBLAS_INT` stride length for `X`.\n\n```c\nvoid stdlib_strided_cfill( const CBLAS_INT N, const stdlib_complex64_t alpha, stdlib_complex64_t *X, const CBLAS_INT strideX );\n```\n\n#### stdlib_strided_cfill_ndarray( N, alpha, \\*X, strideX, offsetX )\n\nFills a single-precision complex floating-point strided array `X` with a specified scalar constant `alpha` using alternative indexing semantics.\n\n```c\n#include \"stdlib/complex/float32/ctor.h\"\n\nfloat x[] = { 1.0f, 2.0f, 3.0f, 4.0f };\nconst stdlib_complex64_t alpha = stdlib_complex64( 2.0f, 2.0f );\n\nstdlib_strided_cfill_ndarray( 4, alpha, (stdlib_complex64_t *)x, 1, 0 );\n```\n\nThe function accepts the following arguments:\n\n-   **N**: `[in] CBLAS_INT` number of indexed elements.\n-   **alpha**: `[in] stdlib_complex64_t` scalar constant.\n-   **X**: `[out] stdlib_complex64_t*` input array.\n-   **strideX**: `[in] CBLAS_INT` stride length for `X`.\n-   **offsetX**: `[in] CBLAS_INT` starting index for `X`.\n\n```c\nvoid stdlib_strided_cfill_ndarray( const CBLAS_INT N, const stdlib_complex64_t alpha, stdlib_complex64_t *X, const CBLAS_INT strideX, const CBLAS_INT offsetX );\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.usage --\u003e\n\n\u003c!-- C API usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"notes\"\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.notes --\u003e\n\n\u003c!-- C API usage examples. --\u003e\n\n\u003csection class=\"examples\"\u003e\n\n### Examples\n\n```c\n#include \"stdlib/blas/ext/base/cfill.h\"\n#include \"stdlib/complex/float32/ctor.h\"\n#include \u003cstdio.h\u003e\n\nint main( void ) {\n    // Create a strided array of interleaved real and imaginary components:\n    float x[] = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f };\n\n    // Create a complex scalar:\n    const stdlib_complex64_t alpha = stdlib_complex64( 2.0f, 2.0f );\n\n    // Specify the number of indexed elements:\n    const int N = 4;\n\n    // Specify a stride:\n    const int strideX = 1;\n\n    // Fill the array:\n    stdlib_strided_cfill( N, alpha, (stdlib_complex64_t *)x, strideX );\n\n    // Print the result:\n    for ( int i = 0; i \u003c N; i++ ) {\n        printf( \"x[ %i ] = %f + %fj\\n\", i, x[ i*2 ], x[ (i*2)+1 ] );\n    }\n}\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.examples --\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.c --\u003e\n\n\u003c!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --\u003e\n\n\u003csection class=\"related\"\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.related --\u003e\n\n\u003c!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\n\u003csection class=\"main-repo\" \u003e\n\n* * *\n\n## Notice\n\nThis package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.\n\nFor more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].\n\n#### Community\n\n[![Chat][chat-image]][chat-url]\n\n---\n\n## License\n\nSee [LICENSE][stdlib-license].\n\n\n## Copyright\n\nCopyright \u0026copy; 2016-2026. The Stdlib [Authors][stdlib-authors].\n\n\u003c/section\u003e\n\n\u003c!-- /.stdlib --\u003e\n\n\u003c!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --\u003e\n\n\u003csection class=\"links\"\u003e\n\n[npm-image]: http://img.shields.io/npm/v/@stdlib/blas-ext-base-cfill.svg\n[npm-url]: https://npmjs.org/package/@stdlib/blas-ext-base-cfill\n\n[test-image]: https://github.com/stdlib-js/blas-ext-base-cfill/actions/workflows/test.yml/badge.svg?branch=main\n[test-url]: https://github.com/stdlib-js/blas-ext-base-cfill/actions/workflows/test.yml?query=branch:main\n\n[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/blas-ext-base-cfill/main.svg\n[coverage-url]: https://codecov.io/github/stdlib-js/blas-ext-base-cfill?branch=main\n\n\u003c!--\n\n[dependencies-image]: https://img.shields.io/david/stdlib-js/blas-ext-base-cfill.svg\n[dependencies-url]: https://david-dm.org/stdlib-js/blas-ext-base-cfill/main\n\n--\u003e\n\n[chat-image]: https://img.shields.io/badge/zulip-join_chat-brightgreen.svg\n[chat-url]: https://stdlib.zulipchat.com\n\n[stdlib]: https://github.com/stdlib-js/stdlib\n\n[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors\n\n[umd]: https://github.com/umdjs/umd\n[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules\n\n[deno-url]: https://github.com/stdlib-js/blas-ext-base-cfill/tree/deno\n[deno-readme]: https://github.com/stdlib-js/blas-ext-base-cfill/blob/deno/README.md\n[umd-url]: https://github.com/stdlib-js/blas-ext-base-cfill/tree/umd\n[umd-readme]: https://github.com/stdlib-js/blas-ext-base-cfill/blob/umd/README.md\n[esm-url]: https://github.com/stdlib-js/blas-ext-base-cfill/tree/esm\n[esm-readme]: https://github.com/stdlib-js/blas-ext-base-cfill/blob/esm/README.md\n[branches-url]: https://github.com/stdlib-js/blas-ext-base-cfill/blob/main/branches.md\n\n[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/blas-ext-base-cfill/main/LICENSE\n\n[@stdlib/array/complex64]: https://github.com/stdlib-js/array-complex64\n\n[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray\n\n\u003c/section\u003e\n\n\u003c!-- /.links --\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Fblas-ext-base-cfill","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstdlib-js%2Fblas-ext-base-cfill","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Fblas-ext-base-cfill/lists"}