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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 | 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 60x 106x 106x 106x 106x 106x 106x 31x 60x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 22x 46x 46x 46x 46x 46x 46x 13x 22x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 21x 38x 19x 19x 19x 19x 19x 19x 38x 38x 38x 38x 38x 11x 21x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 105x 105x 105x 105x 105x 105x 105x 105x 105x 2x 2x 103x 103x 103x 103x 105x 15x 15x 15x 103x 103x 103x 103x 105x 105x 105x 41x 105x 62x 62x 62x 62x 62x 19x 62x 19x 19x 19x 43x 62x 62x 21x 62x 21x 21x 21x 22x 22x 22x 41x 41x 105x 3x 3x 3x 3x 3x | /**
* @license Apache-2.0
*
* Copyright (c) 2024 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 isComplexDataType = require( '@stdlib/array/base/assert/is-complex-floating-point-data-type' );
var isBooleanDataType = require( '@stdlib/array/base/assert/is-boolean-data-type' );
var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
var reinterpretCmplx = require( '@stdlib/strided/base/reinterpret-complex' );
var reinterpretBool = require( '@stdlib/strided/base/reinterpret-boolean' );
var resolveStride = require( './resolve_stride.js' );
var numel = require( './numel.js' );
// FUNCTIONS //
/**
* Takes elements from either one indexed array or another depending on a condition and assigns the values to elements in an indexed output array.
*
* @private
* @param {NonNegativeInteger} N - number of indexed elements
* @param {Collection} condition - indicator array
* @param {Collection} x - first input array
* @param {Collection} y - second input array
* @param {Collection} out - output array
* @param {integer} stride - output array stride
* @param {NonNegativeInteger} offset - output array offset
* @throws {Error} input arrays must be broadcast compatible with the output array
* @returns {Collection} output array
*
* @example
* var x = [ 1, 2, 3, 4 ];
* var y = [ 5, 6, 7, 8 ];
*
* var out = [ 0, 0, 0, 0 ];
* var condition = [ true, false, true, false ];
*
* var arr = indexed( out.length, condition, x, y, out, 1, 0 );
* // returns [ 1, 6, 3, 8 ]
*
* var bool = ( arr === out );
* // returns true
*/
function indexed( N, condition, x, y, out, stride, offset ) {
var sx;
var sy;
var sc;
var ix;
var iy;
var ic;
var io;
var i;
// Broadcast the arrays by computing strides:
sc = resolveStride( condition.length, N );
sx = resolveStride( x.length, N );
sy = resolveStride( y.length, N );
// Initialize indices:
ic = 0;
ix = 0;
iy = 0;
io = offset;
// Extract each desired element from a provided array...
for ( i = 0; i < N; i++ ) {
out[ io ] = ( condition[ ic ] ) ? x[ ix ] : y[ iy ];
ic += sc;
ix += sx;
iy += sy;
io += stride;
}
return out;
}
/**
* Takes elements from either one accessor array or another depending on a condition and assigns the values to elements in an accessor output array.
*
* @private
* @param {NonNegativeInteger} N - number of indexed elements
* @param {Object} condition - condition array object
* @param {Object} x - first input array object
* @param {Object} y - second input array object
* @param {Object} out - output array object
* @param {integer} stride - output array stride
* @param {NonNegativeInteger} offset - output array offset
* @returns {Collection} output array
*
* @example
* var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
* var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
*
* var x = toAccessorArray( [ 1, 2, 3, 4 ] );
* var y = toAccessorArray( [ 5, 6, 7, 8 ] );
*
* var condition = toAccessorArray( [ true, false, true, false ] );
*
* var out = toAccessorArray( [ 0, 0, 0, 0 ] );
* var arr = accessors( out.length, arraylike2object( condition ), arraylike2object( x ), arraylike2object( y ), arraylike2object( out ), 1, 0 );
*
* var v = arr.get( 0 );
* // returns 1
*
* v = arr.get( 1 );
* // returns 6
*/
function accessors( N, condition, x, y, out, stride, offset ) {
var xdata;
var ydata;
var cdata;
var odata;
var xget;
var yget;
var cget;
var oset;
var sx;
var sy;
var sc;
var ix;
var iy;
var ic;
var io;
var i;
cdata = condition.data;
xdata = x.data;
ydata = y.data;
odata = out.data;
cget = condition.accessors[ 0 ];
xget = x.accessors[ 0 ];
yget = y.accessors[ 0 ];
oset = out.accessors[ 1 ];
// Broadcast the arrays by computing strides:
sc = resolveStride( cdata.length, N );
sx = resolveStride( xdata.length, N );
sy = resolveStride( ydata.length, N );
// Initialize indices:
ic = 0;
ix = 0;
iy = 0;
io = offset;
// Extract each desired element from a provided array...
for ( i = 0; i < N; i++ ) {
oset( odata, io, ( cget( cdata, ic ) ) ? xget( xdata, ix ) : yget( ydata, iy ) ); // eslint-disable-line max-len
ic += sc;
ix += sx;
iy += sy;
io += stride;
}
return odata;
}
/**
* Takes elements from either one complex array or another depending on a condition and assigns the values to elements in a complex output array.
*
* @private
* @param {NonNegativeInteger} N - number of indexed elements
* @param {Object} condition - condition array object
* @param {Collection} x - first real-valued floating-point input array view
* @param {Collection} y - second real-valued floating-point input array view
* @param {Collection} out - real-valued floating-point output array view
* @param {integer} stride - output array stride
* @param {NonNegativeInteger} offset - output array offset
* @returns {Collection} output array view
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var arraylike2object = require( '@stdlib/array/base/arraylike2object' );
*
* var x = new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0 ] );
* var y = new Float64Array( [ 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0 ] );
*
* var condition = [ true, false, true, false ];
*
* var out = new Float64Array( 8 );
*
* var arr = complex( 4, arraylike2object( condition ), x, y, out, 1, 0 );
* // returns <Float64Array>[ 1.0, 2.0, 11.0, 12.0, 5.0, 6.0, 15.0, 16.0 ]
*/
function complex( N, condition, x, y, out, stride, offset ) {
var cdata;
var cget;
var sx;
var sy;
var sc;
var so;
var ix;
var iy;
var ic;
var io;
var i;
cdata = condition.data;
cget = condition.accessors[ 0 ];
// Broadcast the arrays by computing strides (note: multiply strides by 2 for complex array arguments, as a real-valued array view consists of interleaved real and imaginary components):
sc = resolveStride( cdata.length, N );
sx = resolveStride( x.length/2, N ) * 2;
sy = resolveStride( y.length/2, N ) * 2;
so = stride * 2;
// Initialize indices:
ic = 0;
ix = 0;
iy = 0;
io = offset * 2; // note: account for interleaved real and imaginary components
// Extract each desired element from a provided array...
for ( i = 0; i < N; i++ ) {
if ( cget( cdata, ic ) ) {
out[ io ] = x[ ix ];
out[ io+1 ] = x[ ix+1 ];
} else {
out[ io ] = y[ iy ];
out[ io+1 ] = y[ iy+1 ];
}
ic += sc;
ix += sx;
iy += sy;
io += so;
}
return out;
}
// MAIN //
/**
* Takes elements from either one of two arrays depending on a condition and assigns the values to elements in a provided output array.
*
* @param {Collection} condition - indicator array
* @param {Collection} x - first input array
* @param {Collection} y - second input array
* @param {Collection} out - output array
* @param {integer} stride - output array stride
* @param {NonNegativeInteger} offset - output array offset
* @throws {Error} input arrays must be broadcast compatible with the output array
* @returns {Collection} output array
*
* @example
* var x = [ 1, 2, 3, 4 ];
* var y = [ 5, 6, 7, 8 ];
*
* var out = [ 0, 0, 0, 0 ];
* var condition = [ true, false, true, false ];
*
* var arr = assign( condition, x, y, out, 1, 0 );
* // returns [ 1, 6, 3, 8 ]
*
* var bool = ( arr === out );
* // returns true
*/
function assign( condition, x, y, out, stride, offset ) {
var co;
var xo;
var yo;
var oo;
var N;
// Check whether we can avoid doing any work...
if ( condition.length === 0 ) {
return out;
}
// Compute the number of indexed elements in the output array:
N = numel( out.length, stride, offset );
co = arraylike2object( condition );
if ( isBooleanDataType( co.dtype ) ) {
condition = reinterpretBool( condition, 0 );
co = arraylike2object( condition );
}
xo = arraylike2object( x );
yo = arraylike2object( y );
oo = arraylike2object( out );
if (
co.accessorProtocol ||
xo.accessorProtocol ||
yo.accessorProtocol ||
oo.accessorProtocol
) {
// Note: we only explicitly special case a select number of same dtype-to-dtype combinations, as this function should not be concerned with casting rules, etc. That is left to userland...
if (
co.accessorProtocol === false &&
isBooleanDataType( xo.dtype ) &&
isBooleanDataType( yo.dtype ) &&
isBooleanDataType( oo.dtype )
) {
indexed( N, condition, reinterpretBool( x, 0 ), reinterpretBool( y, 0 ), reinterpretBool( out, 0 ), stride, offset ); // eslint-disable-line max-len
return out;
}
if (
isComplexDataType( xo.dtype ) &&
isComplexDataType( yo.dtype ) &&
isComplexDataType( oo.dtype )
) {
complex( N, co, reinterpretCmplx( x, 0 ), reinterpretCmplx( y, 0 ), reinterpretCmplx( out, 0 ), stride, offset ); // eslint-disable-line max-len
return out;
}
accessors( N, co, xo, yo, oo, stride, offset );
return out;
}
indexed( N, condition, x, y, out, stride, offset );
return out;
}
// EXPORTS //
module.exports = assign;
|