Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* @license Apache-2.0
*
* Copyright (c) 2022 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var isArrayLikeObject = require( '@stdlib/assert/is-array-like-object' );
var isndarrayLike = require( '@stdlib/assert/is-ndarray-like' );
var isFunction = require( '@stdlib/assert/is-function' );
var zeros = require( '@stdlib/array/base/zeros' );
var ndarraylike2object = require( '@stdlib/ndarray/base/ndarraylike2object' );
var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
var ndzeros = require( '@stdlib/ndarray/zeros' );
var broadcastShapes = require( '@stdlib/ndarray/base/broadcast-shapes' );
var broadcast = require( '@stdlib/ndarray/base/maybe-broadcast-array' );
var format = require( '@stdlib/string/format' );
var ndarrayFcn = require( './ndarray.js' );
var arrayFcn = require( './array.js' );
// MAIN //
/**
* Applies a function to elements in two input arrays and assigns the results to a new array.
*
* ## Notes
*
* - The applied function is provided the following arguments:
*
* - **v1**: element from first input array.
* - **v2**: element from second input array.
* - **idx**: element index.
* - **arrays**: input arrays.
*
* @param {(ArrayLikeObject|ndarray)} x - first input array
* @param {(ArrayLikeObject|ndarray)} y - second input array
* @param {Function} fcn - function to apply
* @param {*} [thisArg] - function execution context
* @throws {TypeError} first argument must be an array-like object or an ndarray
* @throws {TypeError} second argument must be an array-like object or an ndarray
* @throws {TypeError} input arrays must be either both array-like objects or both ndarrays
* @throws {RangeError} input arrays must have the same length
* @throws {Error} input ndarrays must be broadcast compatible
* @throws {TypeError} third argument must be a function
* @returns {(Array|ndarray)} output array
*
* @example
* var naryFunction = require( '@stdlib/utils/nary-function' );
* var add = require( '@stdlib/number/float64/base/add' );
*
* var x = [ 1, 2, 3, 4, 5, 6 ];
* var y = [ 1, 1, 1, 1, 1, 1 ];
*
* var out = map2( x, y, naryFunction( add, 2 ) );
* // returns [ 2, 3, 4, 5, 6, 7 ]
*
* @example
* var naryFunction = require( '@stdlib/utils/nary-function' );
* var add = require( '@stdlib/number/float64/base/add' );
* var array = require( '@stdlib/ndarray/array' );
*
* var opts = {
* 'dtype': 'generic'
* };
* var x = array( [ [ 1, 2, 3 ], [ 4, 5, 6 ] ], opts );
* var y = array( [ [ 1, 1, 1 ], [ 1, 1, 1 ] ], opts );
*
* var out = map2( x, y, naryFunction( add, 2 ) );
* // returns <ndarray>
*
* var data = out.data;
* // returns [ 2, 3, 4, 5, 6, 7 ]
*/
function map2( x, y, fcn, thisArg ) {
var isxnd;
var isynd;
var out;
var tmp;
var sh;
if ( !isFunction( fcn ) ) {
throw new TypeError( format( 'invalid argument. Second argument must be a function. Value: `%s`.', fcn ) );
}
isxnd = isndarrayLike( x );
isynd = isndarrayLike( y );
if ( isxnd ) { // note: assertion order matters here, as an ndarray-like object is also array-like
if ( !isynd ) {
throw new TypeError( format( 'invalid argument. If the first input array is an ndarray, the second input array must also be an ndarray. Value: `%s`.', y ) );
}
// Broadcast `x` and `y` to a common shape:
sh = broadcastShapes( [ x.shape, y.shape ] );
if ( sh === null ) {
throw new Error( 'invalid arguments. Input ndarrays must be broadcast compatible.' );
}
// Broadcast and wrap the input arrays and ensure that the `ref` properties point to the original input arrays...
tmp = ndarraylike2object( broadcast( x, sh ) );
tmp.ref = x;
x = tmp;
tmp = ndarraylike2object( broadcast( y, sh ) );
tmp.ref = y;
y = tmp;
// Create an output array:
out = ndzeros( sh, {
'dtype': 'generic',
'order': x.order
});
// Apply the function to the input arrays:
ndarrayFcn( x, y, ndarraylike2object( out ), fcn, thisArg );
return out;
}
if ( isArrayLikeObject( x ) ) {
if ( isynd || !isArrayLikeObject( y ) ) {
throw new TypeError( format( 'invalid argument. If the first input array is an array-like object, the second input array must also be an array-like object. Value: `%s`.', y ) );
}
if ( y.length !== x.length ) {
throw new RangeError( 'invalid arguments. Input arrays must have the same length.' );
}
out = zeros( x.length );
arrayFcn( arraylike2object( x ), arraylike2object( y ), arraylike2object( out ), fcn, thisArg ); // eslint-disable-line max-len
return out;
}
throw new TypeError( format( 'invalid argument. First argument must be an array-like object or an ndarray. Value: `%s`.', x ) );
}
// EXPORTS //
module.exports = map2;
|