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<!-- | ||
@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. | ||
--> | ||
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# scalar2array | ||
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> Create a single-element array containing a provided scalar value. | ||
<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. --> | ||
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<section class="intro"> | ||
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</section> | ||
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<!-- /.intro --> | ||
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<!-- Package usage documentation. --> | ||
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<section class="usage"> | ||
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## Usage | ||
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```javascript | ||
var scalar2array = require( '@stdlib/array/from-scalar' ); | ||
``` | ||
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#### scalar2array( value\[, dtype] ) | ||
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Returns a single-element array containing a provided scalar value. | ||
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```javascript | ||
var x = scalar2array( 3.0 ); | ||
// returns <Float64Array>[ 3.0 ] | ||
``` | ||
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If not provided a `dtype` argument and `value` | ||
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- is a `number`, the default [data type][@stdlib/array/dtypes] is the [default][@stdlib/array/defaults] real-valued floating-point data type. | ||
- is a complex number object of a known data type, the data type is the same as the provided value. | ||
- is a complex number object of an unknown data type, the default [data type][@stdlib/array/dtypes] is the [default][@stdlib/array/defaults] complex-valued floating-point data type. | ||
- is any other value type, the default [data type][@stdlib/array/dtypes] is `'generic'`. | ||
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To explicitly specify the [data type][@stdlib/array/dtypes] of the returned array, provide a `dtype` argument. | ||
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```javascript | ||
var x = scalar2array( 3.0, 'float32' ); | ||
// returns <Float32Array>[ 3.0 ] | ||
``` | ||
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</section> | ||
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<!-- /.usage --> | ||
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<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> | ||
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<section class="notes"> | ||
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## Notes | ||
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- If `value` is a number and the `dtype` argument is a complex [data type][@stdlib/array/dtypes], the function returns a complex number array containing a complex number whose real component equals the provided scalar `value` and whose imaginary component is zero. | ||
- The function does **not** guard against precision loss when `value` is a number and the `dtype` argument is an integer [data type][@stdlib/array/dtypes]. | ||
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</section> | ||
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<!-- /.notes --> | ||
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<!-- Package usage examples. --> | ||
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<section class="examples"> | ||
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## Examples | ||
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<!-- eslint no-undef: "error" --> | ||
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```javascript | ||
var Complex128 = require( '@stdlib/complex/float64' ); | ||
var array2scalar = require( '@stdlib/array/from-scalar' ); | ||
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var x = array2scalar( 3.0 ); | ||
// returns <Float64Array>[ 3.0 ] | ||
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x = array2scalar( 3, 'int32' ); | ||
// returns <Int32Array>[ 3 ] | ||
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x = array2scalar( new Complex128( 3.0, 4.0 ) ); | ||
// returns <Complex128Array> | ||
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x = array2scalar( {} ); | ||
// returns [ {} ] | ||
``` | ||
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</section> | ||
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<!-- /.examples --> | ||
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<!-- Section to include cited references. If references are included, add a horizontal rule *before* the section. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> | ||
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<section class="references"> | ||
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</section> | ||
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<!-- /.references --> | ||
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. --> | ||
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<section class="related"> | ||
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</section> | ||
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<!-- /.related --> | ||
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. --> | ||
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<section class="links"> | ||
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[@stdlib/array/dtypes]: https://github.com/stdlib-js/array/tree/main/dtypes | ||
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[@stdlib/array/defaults]: https://github.com/stdlib-js/array/tree/main/defaults | ||
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</section> | ||
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<!-- /.links --> |
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