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 | 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 3x 3x 3x 3x 3x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 20x 4x 4x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 16x 20x 4x 2x 2x 2x 2x 2x 2x 4x 4x 12x 12x 12x 12x 12x 20x 5x 5x 12x 12x 12x 12x 20x 30x 30x 30x 30x 12x 20x 5x 5x 5x 12x 20x 3x 3x 3x 3x 3x | /**
* @license Apache-2.0
*
* Copyright (c) 2026 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 reinterpret = require( '@stdlib/strided/base/reinterpret-complex128' );
var real = require( '@stdlib/complex/float64/real' );
var imag = require( '@stdlib/complex/float64/imag' );
// MAIN //
/**
* Fills a double-precision complex floating-point strided array with linearly spaced values over a specified interval using alternative indexing semantics.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {Complex128} start - start of interval
* @param {Complex128} stop - end of interval
* @param {boolean} endpoint - boolean indicating whether to include the `stop` value when writing values to the input array
* @param {Complex128Array} x - input array
* @param {integer} strideX - stride length
* @param {NonNegativeInteger} offsetX - starting index
* @returns {Complex128Array} input array
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
* var Complex128 = require( '@stdlib/complex/float64/ctor' );
*
* var x = new Complex128Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
*
* var strt = new Complex128( 0.0, 0.0 );
* var stp = new Complex128( 100.0, 50.0 );
*
* zlinspace( x.length, strt, stp, true, x, 1, 0 );
* // x => <Complex128Array>[ 0.0, 0.0, 20.0, 10.0, 40.0, 20.0, 60.0, 30.0, 80.0, 40.0, 100.0, 50.0 ]
*
* @example
* var Complex128Array = require( '@stdlib/array/complex128' );
* var Complex128 = require( '@stdlib/complex/float64/ctor' );
*
* var x = new Complex128Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
*
* var strt = new Complex128( 0.0, 0.0 );
* var stp = new Complex128( 100.0, 50.0 );
*
* zlinspace( x.length, strt, stp, false, x, 1, 0 );
* // x => <Complex128Array>[ 0.0, 0.0, 20.0, 10.0, 40.0, 20.0, 60.0, 30.0, 80.0, 40.0 ]
*/
function zlinspace( N, start, stop, endpoint, x, strideX, offsetX ) {
var startRe;
var startIm;
var stopRe;
var stopIm;
var view;
var dre;
var dim;
var sx;
var ix;
var i;
if ( N <= 0 ) {
return x;
}
// Decompose the interval bounds into their real and imaginary components:
startRe = real( start );
startIm = imag( start );
stopRe = real( stop );
stopIm = imag( stop );
// Reinterpret the complex input array as a real-valued array:
view = reinterpret( x, 0 );
// Adjust the stride and offset according to the real-valued array (2 doubles per element):
sx = strideX * 2;
ix = offsetX * 2;
// Set the first value:
if ( N === 1 ) {
if ( endpoint ) {
view[ ix ] = stopRe;
view[ ix+1 ] = stopIm;
} else {
view[ ix ] = startRe;
view[ ix+1 ] = startIm;
}
return x;
}
view[ ix ] = startRe;
view[ ix+1 ] = startIm;
ix += sx;
// Calculate the complex increment:
if ( endpoint ) {
N -= 1;
}
dre = ( stopRe - startRe ) / N;
dim = ( stopIm - startIm ) / N;
// Generate linearly spaced values:
for ( i = 1; i < N; i++ ) {
view[ ix ] = startRe + ( dre * i );
view[ ix+1 ] = startIm + ( dim * i );
ix += sx;
}
// Check whether to include the `stop` value:
if ( endpoint ) {
view[ ix ] = stopRe;
view[ ix+1 ] = stopIm;
}
return x;
}
// EXPORTS //
module.exports = zlinspace;
|