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 | 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 13x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 14x 15x 13x 13x 15x 2x 2x 2x 15x 15x 15x 17x 13x 13x 17x 4x 4x 4x 17x 17x 17x 17x 17x 18x 16x 16x 18x 2x 2x 2x 18x 18x 18x 18x 18x 19x 17x 17x 19x 2x 2x 2x 19x 19x 19x 19x 19x 24x 14x 14x 24x 10x 10x 10x 24x 24x 24x 24x 24x 26x 22x 22x 26x 4x 4x 4x 26x 26x 26x 26x 26x 26x 26x 26x 26x 26x 51x 83x 136x 186x 348x 784x 776x 776x 776x 784x 784x 784x 348x 348x 348x 186x 186x 186x 136x 136x 136x 83x 83x 83x 51x 51x 51x 26x 24x 19x 18x 17x 15x 14x 13x 13x 13x 13x 13x | /**
* @license Apache-2.0
*
* Copyright (c) 2025 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.
*/
/* eslint-disable max-depth */
'use strict';
// MODULES //
var loopOrder = require( '@stdlib/ndarray/base/unary-loop-interchange-order' );
var blockSize = require( '@stdlib/ndarray/base/unary-tiling-block-size' );
// MAIN //
/**
* Applies a mask to a provided input ndarray and assigns unmasked values to elements in a provided one-dimensional output ndarray.
*
* @private
* @param {Object} x - object containing input ndarray meta data
* @param {Object} mask - object containing mask ndarray meta data
* @param {Object} y - object containing output ndarray meta data
* @returns {void}
*
* @example
* var Float64Array = require( '@stdlib/array/float64' );
* var Uint8Array = require( '@stdlib/array/uint8' );
*
* // Define the shape of the array:
* var shape = [ 1, 1, 1, 3, 1, 2 ];
*
* // Define the array strides:
* var sx = [ 6, 6, 6, 2, 2, 1 ];
* var sm = [ 6, 6, 6, 2, 2, 1 ];
* var sy = [ 1 ];
*
* // Define the index offset:
* var ox = 1;
* var om = 0;
*
* var x = {
* 'dtype': 'float64',
* 'data': new Float64Array( [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 ] ),
* 'shape': shape,
* 'strides': sx,
* 'offset': ox,
* 'order': 'row-major'
* };
*
* var mask = {
* 'dtype': 'uint8',
* 'data': new Uint8Array( [ 1, 0, 1, 0, 1, 0 ] ),
* 'shape': shape,
* 'strides': sm,
* 'offset': om,
* 'order': 'row-major'
* };
*
* var y = {
* 'dtype': 'float64',
* 'data': new Float64Array( 3 ),
* 'shape': [ 3 ],
* 'strides': sy,
* 'offset': 0,
* 'order': 'row-major'
* };
*
* blockedmskfilter6d( x, mask, y );
*
* console.log( y.data );
* // => <Float64Array>[ 2.0, 4.0, 6.0 ]
*/
function blockedmskfilter6d( x, mask, y ) { // eslint-disable-line max-statements
var bsize;
var xbuf;
var mbuf;
var ybuf;
var dx0;
var dx1;
var dx2;
var dx3;
var dx4;
var dx5;
var dm0;
var dm1;
var dm2;
var dm3;
var dm4;
var dm5;
var dy0;
var ox1;
var ox2;
var ox3;
var ox4;
var ox5;
var om1;
var om2;
var om3;
var om4;
var om5;
var sh;
var s0;
var s1;
var s2;
var s3;
var s4;
var s5;
var sx;
var sm;
var ox;
var om;
var ix;
var im;
var iy;
var i0;
var i1;
var i2;
var i3;
var i4;
var i5;
var j0;
var j1;
var j2;
var j3;
var j4;
var j5;
var o;
// Resolve the loop interchange order:
o = loopOrder( x.shape, x.strides, mask.strides );
sh = o.sh;
sx = o.sx;
sm = o.sy;
// Determine the block size:
bsize = blockSize( x.dtype, mask.dtype );
// Cache the indices of the first indexed elements in the respective ndarrays...
ox = x.offset;
om = mask.offset;
// Cache references to the input, mask, and output ndarray buffers...
xbuf = x.data;
mbuf = mask.data;
ybuf = y.data;
// Cache offset increments for the innermost loop...
dx0 = sx[0];
dm0 = sm[0];
dy0 = y.strides[0];
iy = y.offset;
// Iterate over blocks...
for ( j5 = sh[5]; j5 > 0; ) {
if ( j5 < bsize ) {
s5 = j5;
j5 = 0;
} else {
s5 = bsize;
j5 -= bsize;
}
ox5 = ox + ( j5*sx[5] );
om5 = om + ( j5*sm[5] );
for ( j4 = sh[4]; j4 > 0; ) {
if ( j4 < bsize ) {
s4 = j4;
j4 = 0;
} else {
s4 = bsize;
j4 -= bsize;
}
dx5 = sx[5] - ( s4*sx[4] );
dm5 = sm[5] - ( s4*sm[4] );
ox4 = ox5 + ( j4*sx[4] );
om4 = om5 + ( j4*sm[4] );
for ( j3 = sh[3]; j3 > 0; ) {
if ( j3 < bsize ) {
s3 = j3;
j3 = 0;
} else {
s3 = bsize;
j3 -= bsize;
}
dx4 = sx[4] - ( s3*sx[3] );
dm4 = sm[4] - ( s3*sm[3] );
ox3 = ox4 + ( j3*sx[3] );
om3 = om4 + ( j3*sm[3] );
for ( j2 = sh[2]; j2 > 0; ) {
if ( j2 < bsize ) {
s2 = j2;
j2 = 0;
} else {
s2 = bsize;
j2 -= bsize;
}
dx3 = sx[3] - ( s2*sx[2] );
dm3 = sm[3] - ( s2*sm[2] );
ox2 = ox3 + ( j2*sx[2] );
om2 = om3 + ( j2*sm[2] );
for ( j1 = sh[1]; j1 > 0; ) {
if ( j1 < bsize ) {
s1 = j1;
j1 = 0;
} else {
s1 = bsize;
j1 -= bsize;
}
dx2 = sx[2] - ( s1*sx[1] );
dm2 = sm[2] - ( s1*sm[1] );
ox1 = ox2 + ( j1*sx[1] );
om1 = om2 + ( j1*sm[1] );
for ( j0 = sh[0]; j0 > 0; ) {
if ( j0 < bsize ) {
s0 = j0;
j0 = 0;
} else {
s0 = bsize;
j0 -= bsize;
}
// Compute index offsets for the first input and mask ndarray elements in the current block...
ix = ox1 + ( j0*sx[0] );
im = om1 + ( j0*sm[0] );
// Compute loop offset increments...
dx1 = sx[1] - ( s0*sx[0] );
dm1 = sm[1] - ( s0*sm[0] );
// Iterate over the ndarray dimensions...
for ( i5 = 0; i5 < s5; i5++ ) {
for ( i4 = 0; i4 < s4; i4++ ) {
for ( i3 = 0; i3 < s3; i3++ ) {
for ( i2 = 0; i2 < s2; i2++ ) {
for ( i1 = 0; i1 < s1; i1++ ) {
for ( i0 = 0; i0 < s0; i0++ ) {
if ( mbuf[ im ] ) {
ybuf[ iy ] = xbuf[ ix ];
iy += dy0;
}
ix += dx0;
im += dm0;
}
ix += dx1;
im += dm1;
}
ix += dx2;
im += dm2;
}
ix += dx3;
im += dm3;
}
ix += dx4;
im += dm4;
}
ix += dx5;
im += dm5;
}
}
}
}
}
}
}
}
// EXPORTS //
module.exports = blockedmskfilter6d;
|