Assign callbacks to masked unary interfaces according to type promotion rules.
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> Assign callbacks to masked unary interfaces according to type [promotion rules][@stdlib/ndarray/promotion-rules].
``bash`
npm install @stdlib/strided-base-mskunary-signature-callbacks
`javascript`
var callbacks = require( '@stdlib/strided-base-mskunary-signature-callbacks' );
#### callbacks( table, signatures )
Assigns callbacks to masked unary interfaces according to type [promotion rules][@stdlib/ndarray/promotion-rules].
`javascript
var signatures = require( '@stdlib/strided-base-mskunary-dtype-signatures' );
var identity = require( '@stdlib/number-float64-base-identity' );
var cidentity = require( '@stdlib/complex-float64-base-identity' );
var cidentityf = require( '@stdlib/complex-float32-base-identity' );
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.
- 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][@stdlib/ndarray/promotion-rules].
`javascript
var dtypes = require( '@stdlib/strided-dtypes' );
var signatures = require( '@stdlib/strided-base-mskunary-dtype-signatures' );
var identity = require( '@stdlib/number-float64-base-identity' );
var cidentity = require( '@stdlib/complex-float64-base-identity' );
var cidentityf = require( '@stdlib/complex-float32-base-identity' );
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 [...]
`
*
- [@stdlib/strided-base/mskunary-dtype-signatures][@stdlib/strided/base/mskunary-dtype-signatures]: generate a list of masked unary interface signatures from strided array data types.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
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[@stdlib/ndarray/promotion-rules]: https://www.npmjs.com/package/@stdlib/ndarray-promotion-rules
[@stdlib/strided/base/mskunary-dtype-signatures]: https://www.npmjs.com/package/@stdlib/strided-base-mskunary-dtype-signatures