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Callbacks

Assign callbacks to masked unary interfaces according to type promotion rules.

Installation

npm install @stdlib/strided-base-mskunary-signature-callbacks

Alternatively,

• To load the package in a website via a script tag without installation and bundlers, use the ES Module available on the esm branch (see README).
• If you are using Deno, visit the deno branch (see README for usage intructions).
• For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the umd branch (see README).

The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.

To 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.

Usage

var callbacks = require( '@stdlib/strided-base-mskunary-signature-callbacks' );

callbacks( table, signatures )

Assigns callbacks to masked unary interfaces according to type promotion rules.

var signatures = require( '@stdlib/strided-base-mskunary-dtype-signatures' );
var identity = require( '@stdlib/math-base-special-identity' );
var cidentity = require( '@stdlib/math-base-special-cidentity' );
var cidentityf = require( '@stdlib/math-base-special-cidentityf' );

var dtypes = [
    'float64',
    'float32',
    'int32',
    'uint8'
];

var sigs = signatures( dtypes, dtypes );
// returns [...]

var table = {
    'default': identity,
    'complex64': cidentityf,
    'complex128': cidentity
};

var list = callbacks( table, sigs );
// returns [...]

The function accepts the following arguments:

• table: callback table.
• signatures: strided array containing masked unary interface signatures.

A callback table should have the following properties:

• default: default callback.
• complex64: callback for single-precision complex floating-point numbers.
• complex128: callback for double-precision complex floating-point numbers.

Notes

• The function assumes that the provided signature array has the following properties:

  • a strided array having a stride length of 3 (i.e., every 3 elements define a masked unary interface signature).
  • for each signature (i.e., set of two consecutive non-overlapping strided array elements), the first element is the input data type, the second element is the mask data type, and the third element is the return data type.
  • all signatures (excluding the mask data type) follow type promotion rules.

Examples

var dtypes = require( '@stdlib/strided-dtypes' );
var signatures = require( '@stdlib/strided-base-mskunary-dtype-signatures' );
var identity = require( '@stdlib/math-base-special-identity' );
var cidentity = require( '@stdlib/math-base-special-cidentity' );
var cidentityf = require( '@stdlib/math-base-special-cidentityf' );
var callbacks = require( '@stdlib/strided-base-mskunary-signature-callbacks' );

// Get the list of supported strided array data types:
var dt = dtypes();

// Generate masked unary interface signatures:
var sigs = signatures( dt, dt );

// Define a callback table:
var table = {
    'default': identity,
    'complex64': cidentityf,
    'complex128': cidentity
};

// Generate a list of callbacks according to type promotion rules:
var clbks = callbacks( table, sigs );
// returns [...]

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See Also

• @stdlib/strided-base/mskunary-dtype-signatures: generate a list of masked unary interface signatures from strided array data types.

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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

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License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.