{"id":26711338,"url":"https://github.com/stdlib-js/math-base-special-cceiln","last_synced_at":"2026-02-17T07:05:27.632Z","repository":{"id":41442683,"uuid":"377240934","full_name":"stdlib-js/math-base-special-cceiln","owner":"stdlib-js","description":"Round a complex number to the nearest multiple of 10^n toward positive infinity.","archived":false,"fork":false,"pushed_at":"2025-04-01T06:17:55.000Z","size":1371,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"main","last_synced_at":"2025-04-13T17:17:38.156Z","etag":null,"topics":["cceil","ceil","cmplx","complex","fix","integer","javascript","math","mathematics","nearest","node","node-js","nodejs","number","round","stdlib","tofixed","value"],"latest_commit_sha":null,"homepage":"https://github.com/stdlib-js/stdlib","language":"Python","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,"zenodo":null},"funding":{"github":["stdlib-js"],"open_collective":"stdlib","tidelift":"npm/@stdlib/stdlib"}},"created_at":"2021-06-15T17:19:16.000Z","updated_at":"2025-04-01T05:59:56.000Z","dependencies_parsed_at":"2023-10-03T07:58:35.640Z","dependency_job_id":"1659011a-7595-4f74-b2e0-a0c55e49a52d","html_url":"https://github.com/stdlib-js/math-base-special-cceiln","commit_stats":{"total_commits":47,"total_committers":1,"mean_commits":47.0,"dds":0.0,"last_synced_commit":"01c3f587f171e11f754ea36701f6389ef42b3217"},"previous_names":[],"tags_count":25,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fmath-base-special-cceiln","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fmath-base-special-cceiln/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fmath-base-special-cceiln/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/stdlib-js%2Fmath-base-special-cceiln/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/stdlib-js","download_url":"https://codeload.github.com/stdlib-js/math-base-special-cceiln/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":248750125,"owners_count":21155687,"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":["cceil","ceil","cmplx","complex","fix","integer","javascript","math","mathematics","nearest","node","node-js","nodejs","number","round","stdlib","tofixed","value"],"created_at":"2025-03-27T10:21:10.074Z","updated_at":"2026-02-17T07:05:27.627Z","avatar_url":"https://github.com/stdlib-js.png","language":"Python","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) 2018 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# cceiln\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 Round each component of a double-precision complex floating-point number to the nearest multiple of `10^n` toward positive infinity.\n\n\u003csection class=\"installation\"\u003e\n\n## Installation\n\n```bash\nnpm install @stdlib/math-base-special-cceiln\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 cceiln = require( '@stdlib/math-base-special-cceiln' );\n```\n\n#### cceiln( z, n )\n\nRounds each component of a double-precision complex floating-point number to the nearest multiple of `10^n` toward positive infinity.\n\n```javascript\nvar Complex128 = require( '@stdlib/complex-float64-ctor' );\nvar real = require( '@stdlib/complex-float64-real' );\nvar imag = require( '@stdlib/complex-float64-imag' );\n\n// Round components to 2 decimal places:\nvar z = new Complex128( -3.141592653589793, 3.141592653589793 );\nvar v = cceiln( z, -2 );\n// returns \u003cComplex128\u003e\n\nvar re = real( v );\n// returns -3.14\n\nvar im = imag( v );\n// returns 3.15\n\n// If n = 0, `cceiln` behaves like `cceil`:\nz = new Complex128( 9.99999, 0.1 );\nv = cceiln( z, 0 );\n// returns \u003cComplex128\u003e\n\nre = real( v );\n// returns 10.0\n\nim = imag( v );\n// returns 1.0\n\n// Round components to the nearest thousand:\nz = new Complex128( 12368.0, -12368.0 );\nv = cceiln( z, 3 );\n// returns \u003cComplex128\u003e\n\nre = real( v );\n// returns 13000.0\n\nim = imag( v );\n// returns -12000.0\n\nv = cceiln( new Complex128( NaN, NaN ), 2 );\n// returns \u003cComplex128\u003e\n\nre = real( v );\n// returns NaN\n\nim = imag( v );\n// returns NaN\n```\n\n\u003c/section\u003e\n\n\u003c!-- /.usage --\u003e\n\n\u003csection class=\"notes\"\u003e\n\n## Notes\n\n-   When operating on [floating-point numbers][ieee754] in bases other than `2`, rounding to specified digits can be **inexact**. For example,\n\n    ```javascript\n    var Complex128 = require( '@stdlib/complex-float64-ctor' );\n    var real = require( '@stdlib/complex-float64-real' );\n    var imag = require( '@stdlib/complex-float64-imag' );\n\n    var x = 0.2 + 0.1;\n    // returns 0.30000000000000004\n\n    // Should round components to 0.3:\n    var v = cceiln( new Complex128( x, x ), -16 );\n    // returns \u003cComplex128\u003e\n\n    var re = real( v );\n    // returns 0.3000000000000001\n\n    var im = imag( v );\n    // returns 0.3000000000000001\n    ```\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 uniform = require( '@stdlib/random-base-uniform' ).factory;\nvar discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;\nvar Complex128 = require( '@stdlib/complex-float64-ctor' );\nvar ceil = require( '@stdlib/math-base-special-ceil' );\nvar cceiln = require( '@stdlib/math-base-special-cceiln' );\n\nvar rand1 = uniform( -50.0, 50.0 );\nvar rand2 = discreteUniform( -5.0, 0.0 );\n\nvar z;\nvar i;\nvar n;\nfor ( i = 0; i \u003c 100; i++ ) {\n    n = rand2();\n    z = new Complex128( rand1(), rand1() );\n    console.log( 'cceiln(%s, %s) = %s', z, n, cceiln( z, n ) );\n}\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/math/base/special/cceiln.h\"\n```\n\n#### stdlib_base_cceiln( z, n )\n\nRounds each component of a double-precision complex floating-point number to the nearest multiple of `10^n` toward positive infinity.\n\n```c\n#include \"stdlib/complex/float64/ctor.h\"\n#include \"stdlib/complex/float64/real.h\"\n#include \"stdlib/complex/float64/imag.h\"\n\nstdlib_complex128_t z = stdlib_complex128( -3.141592653589793, 3.141592653589793 );\n\nstdlib_complex128_t out = stdlib_base_cceiln( z, -2 );\n\ndouble re = stdlib_complex128_real( out );\n// returns -3.14\n\ndouble im = stdlib_complex128_imag( out );\n// returns 3.15\n```\n\nThe function accepts the following arguments:\n\n-   **z**: `[in] stdlib_complex128_t` input value.\n-   **n**: `[in] int32_t` integer power of 10.\n\n```c\nstdlib_complex128_t stdlib_base_cceiln( const stdlib_complex128_t z, int32_t n );\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/math/base/special/cceiln.h\"\n#include \"stdlib/complex/float64/ctor.h\"\n#include \"stdlib/complex/float64/reim.h\"\n#include \u003cstdio.h\u003e\n\nint main() {\n    const stdlib_complex128_t x[] = {\n        stdlib_complex128( 3.14, 1.5 ),\n        stdlib_complex128( -3.14, -1.5 ),\n        stdlib_complex128( 0.0, 0.0 ),\n        stdlib_complex128( 0.0/0.0, 0.0/0.0 )\n    };\n\n    stdlib_complex128_t v;\n    stdlib_complex128_t y;\n    double re1;\n    double im1;\n    double re2;\n    double im2;\n    int i;\n    for ( i = 0; i \u003c 4; i++ ) {\n        v = x[ i ];\n        y = stdlib_base_cceiln( v, -2 );\n        stdlib_complex128_reim( v, \u0026re1, \u0026im1 );\n        stdlib_complex128_reim( y, \u0026re2, \u0026im2 );\n        printf( \"cceiln(%lf + %lfi, -2) = %lf + %lfi\\n\", re1, im1, re2, im2 );\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* * *\n\n## See Also\n\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/math-base/special/cceil`][@stdlib/math/base/special/cceil]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003eround each component of a double-precision complex floating-point number toward positive infinity.\u003c/span\u003e\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/math-base/special/cfloorn`][@stdlib/math/base/special/cfloorn]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003eround each component of a double-precision complex floating-point number to the nearest multiple of 10^n toward negative infinity.\u003c/span\u003e\n-   \u003cspan class=\"package-name\"\u003e[`@stdlib/math-base/special/croundn`][@stdlib/math/base/special/croundn]\u003c/span\u003e\u003cspan class=\"delimiter\"\u003e: \u003c/span\u003e\u003cspan class=\"description\"\u003eround each component of a double-precision complex floating-point number to the nearest multiple of 10^n.\u003c/span\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/math-base-special-cceiln.svg\n[npm-url]: https://npmjs.org/package/@stdlib/math-base-special-cceiln\n\n[test-image]: https://github.com/stdlib-js/math-base-special-cceiln/actions/workflows/test.yml/badge.svg?branch=main\n[test-url]: https://github.com/stdlib-js/math-base-special-cceiln/actions/workflows/test.yml?query=branch:main\n\n[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/math-base-special-cceiln/main.svg\n[coverage-url]: https://codecov.io/github/stdlib-js/math-base-special-cceiln?branch=main\n\n\u003c!--\n\n[dependencies-image]: https://img.shields.io/david/stdlib-js/math-base-special-cceiln.svg\n[dependencies-url]: https://david-dm.org/stdlib-js/math-base-special-cceiln/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/math-base-special-cceiln/tree/deno\n[deno-readme]: https://github.com/stdlib-js/math-base-special-cceiln/blob/deno/README.md\n[umd-url]: https://github.com/stdlib-js/math-base-special-cceiln/tree/umd\n[umd-readme]: https://github.com/stdlib-js/math-base-special-cceiln/blob/umd/README.md\n[esm-url]: https://github.com/stdlib-js/math-base-special-cceiln/tree/esm\n[esm-readme]: https://github.com/stdlib-js/math-base-special-cceiln/blob/esm/README.md\n[branches-url]: https://github.com/stdlib-js/math-base-special-cceiln/blob/main/branches.md\n\n[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/math-base-special-cceiln/main/LICENSE\n\n[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985\n\n\u003c!-- \u003crelated-links\u003e --\u003e\n\n[@stdlib/math/base/special/cceil]: https://github.com/stdlib-js/math-base-special-cceil\n\n[@stdlib/math/base/special/cfloorn]: https://github.com/stdlib-js/math-base-special-cfloorn\n\n[@stdlib/math/base/special/croundn]: https://github.com/stdlib-js/math-base-special-croundn\n\n\u003c!-- \u003c/related-links\u003e --\u003e\n\n\u003c/section\u003e\n\n\u003c!-- /.links --\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Fmath-base-special-cceiln","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstdlib-js%2Fmath-base-special-cceiln","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstdlib-js%2Fmath-base-special-cceiln/lists"}