Callbacks

Assign callbacks to unary interfaces according to type promotion rules.

Installation

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

Usage

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

callbacks( table, signatures )

Assigns callbacks to unary interfaces according to type promotion rules.

var signatures = require( '@stdlib/strided-base-unary-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 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 2 (i.e., every 2 elements define a 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 and the second element is the return data type.
  • all signatures follow type promotion rules.

Examples

var dtypes = require( '@stdlib/strided-dtypes' );
var signatures = require( '@stdlib/strided-base-unary-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-unary-signature-callbacks' );

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

// Generate 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 [...]

See Also

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

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.