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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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# zeroToLike | ||
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> Generate a linearly spaced numeric array whose elements increment by `1` starting from zero and having the same length and data type as a provided input array. | ||
<!-- 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 zeroToLike = require( '@stdlib/array/zero-to-like' ); | ||
``` | ||
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#### zeroToLike( x\[, dtype] ) | ||
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Generates a linearly spaced numeric array whose elements increment by `1` starting from zero and having the same length and data type as a provided input array `x`. | ||
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```javascript | ||
var arr = zeroToLike( [ 0, 0, 0, 0, 0 ] ); | ||
// returns [ 0, 1, 2, 3, 4 ] | ||
``` | ||
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The function recognizes the following data types: | ||
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- `float64`: double-precision floating-point numbers (IEEE 754) | ||
- `float32`: single-precision floating-point numbers (IEEE 754) | ||
- `complex128`: double-precision complex floating-point numbers | ||
- `complex64`: single-precision complex floating-point numbers | ||
- `int32`: 32-bit two's complement signed integers | ||
- `uint32`: 32-bit unsigned integers | ||
- `int16`: 16-bit two's complement signed integers | ||
- `uint16`: 16-bit unsigned integers | ||
- `int8`: 8-bit two's complement signed integers | ||
- `uint8`: 8-bit unsigned integers | ||
- `uint8c`: 8-bit unsigned integers clamped to `0-255` | ||
- `generic`: generic JavaScript values | ||
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By default, the output array data type is inferred from the provided array `x`. To return an array having a different data type, provide a `dtype` argument. | ||
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```javascript | ||
var arr = zeroToLike( [ 0, 0, 0, 0, 0 ], 'int32' ); | ||
// returns <Int32Array>[ 0, 1, 2, 3, 4 ] | ||
``` | ||
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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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- For complex number arrays, each element of the returned array has an imaginary component equal to `0`. | ||
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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 sort2hp = require( '@stdlib/blas/ext/base/gsort2hp' ); | ||
var discreteUniform = require( '@stdlib/random/array/discrete-uniform' ); | ||
var zeroToLike = require( '@stdlib/array/zero-to-like' ); | ||
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// Generate an array of random numbers: | ||
var opts = { | ||
'dtype': 'generic' | ||
}; | ||
var x = discreteUniform( 10, 100, 200, opts ); | ||
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// Generate an array of indices: | ||
var idx = zeroToLike( x ); | ||
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// Create a temporary array to avoid mutation: | ||
var tmp = x.slice(); | ||
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// Sort the index array according to the sort order of `x`: | ||
sort2hp( x.length, 1, tmp, 1, idx, 1 ); | ||
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console.log( x ); | ||
console.log( idx ); | ||
``` | ||
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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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</section> | ||
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<!-- /.links --> |
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