setProps

Define non-enumerable read-only properties which expose strided array function meta data.

Installation

npm install @stdlib/strided-base-meta-data-props

Usage

var setProps = require( '@stdlib/strided-base-meta-data-props' );

setProps( meta, dtypes, obj, bool )

Defines non-enumerable read-only properties which expose strided array function meta data.

// Define strided array function meta data:
var meta = {
    'nargs': 7,
    'nin': 1,
    'nout': 1
};

// Define the list of strided array data types:
var dtypes = [
    'float64', 'float64'
];

// Define an object/function on which to set the properties:
var obj = {};

// Set the properties:
setProps( meta, dtypes, obj, false );

The meta data argument should be an object with the following properties:

• nargs: total number of arguments (excluding offsets).
• nin: number of input strided arrays.
• nout: number of output strided arrays.

The bool argument indicates whether the input object should describe an "ndarray" interface (i.e., an interface supporting offset arguments).

// Define strided array function meta data:
var meta = {
    'nargs': 7, // excludes offsets
    'nin': 1,
    'nout': 1
};

// Define the list of strided array data types:
var dtypes = [
    'float64', 'float64'
];

// Define an object/function on which to set the properties:
var obj = {};

// Set the properties:
setProps( meta, dtypes, obj, true );

// Retrieve the total number of arguments:
var nargs = obj.nargs;
// returns 9

Examples

var setProps = require( '@stdlib/strided-base-meta-data-props' );

// Define strided array function meta data:
var meta = {
    'nargs': 7,
    'nin': 1,
    'nout': 1
};

// Define the list of strided array data types:
var types = [
    'float64', 'float64',
    'float32', 'float32',
    'generic', 'generic'
];

// Define an object/function on which to set the properties:
var obj = {};

// Set the properties:
setProps( meta, types, obj, false );

// Retrieve strided array function data...
var nargs = obj.nargs;
// returns 7

var nin = obj.nin;
// returns 1

var nout = obj.nout;
// returns 1

var sigs = obj.types;
// returns [...]

Notice

This package is part of 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.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.