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Resolve the output ndarray data type for a binary function.
import binaryOutputDataType from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-binary-output-dtype@deno/mod.js';Resolves the output ndarray data type for a binary function according to a data type policy.
var dt = binaryOutputDataType( 'int32', 'float32', 'floating_point' );
// returns 'float64'The function supports the following parameters:
- xdtype: first input ndarray data type.
- ydtype: second input ndarray data type.
- policy: output data type policy.
If policy is a data type, the function always returns the policy value (i.e., the third argument).
var dt = binaryOutputDataType( 'float32', 'float32', 'float64' );
// returns 'float64'
dt = binaryOutputDataType( 'int32', 'int8', 'float64' );
// returns 'float64'
// ...-
The function always applies type promotion to the provided data types, except for the following data type policies:
defaultdefault_indexsame<dtype>
import naryFunction from 'https://cdn.jsdelivr.net/gh/stdlib-js/utils-nary-function@deno/mod.js';
import unzip from 'https://cdn.jsdelivr.net/gh/stdlib-js/utils-unzip@deno/mod.js';
import nCartesianProduct from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-base-n-cartesian-product@deno/mod.js';
import dtypes from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-dtypes@deno/mod.js';
import logEachMap from 'https://cdn.jsdelivr.net/gh/stdlib-js/console-log-each-map@deno/mod.js';
import binaryOutputDataType from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-binary-output-dtype@deno/mod.js';
// Get the list of real-valued data types:
var dt = dtypes( 'real' );
// Define a list of output data type policies:
var policies = [
'default',
'real',
'floating_point',
'complex_floating_point'
];
// Generate dtype-policy Cartesian products:
var args = nCartesianProduct( dt, dt, policies );
// Unzip the argument pair array:
args = unzip( args );
// Resolve output data types:
logEachMap( 'dtypes: (%7s, %7s). policy: %-24s. output dtype: %s.', args[ 0 ], args[ 1 ], args[ 2 ], naryFunction( binaryOutputDataType, 3 ) );This package is part of stdlib, a standard library 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.
See LICENSE.
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