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* @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.
*/
'use strict';
// MODULES //
var f32 = require( '@stdlib/number/float64/base/to-float32' );
// MAIN //
/**
* Fills a single-precision floating-point strided array with linearly spaced values over a specified interval.
*
* @param {PositiveInteger} N - number of indexed elements
* @param {number} start - start of interval
* @param {number} stop - end of interval
* @param {boolean} endpoint - boolean indicating whether to include the `stop` value when writing values to the input array
* @param {Float32Array} x - input array
* @param {integer} strideX - stride length
* @param {NonNegativeInteger} offsetX - starting index
* @returns {Float32Array} input array
*
* @example
* var Float32Array = require( '@stdlib/array/float32' );
*
* var x = new Float32Array( [ 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 ] );
*
* slinspace( x.length, 0.0, 100.0, true, x, 1, 0 );
* // x => <Float32Array>[ 0.0, 20.0, 40.0, 60.0, 80.0, 100.0 ]
*
* @example
* var Float32Array = require( '@stdlib/array/float32' );
*
* var x = new Float32Array( [ 0.0, 0.0, 0.0, 0.0, 0.0 ] );
*
* slinspace( x.length, 0.0, 100.0, false, x, 1, 0 );
* // x => <Float32Array>[ 0.0, 20.0, 40.0, 60.0, 80.0 ]
*/
function slinspace( N, start, stop, endpoint, x, strideX, offsetX ) {
var ix;
var M;
var d;
var i;
if ( N <= 0 ) {
return x;
}
ix = offsetX;
// Set the first value:
if ( N === 1 ) {
if ( endpoint ) {
x[ ix ] = stop;
} else {
x[ ix ] = start;
}
return x;
}
x[ ix ] = start;
ix += strideX;
// Calculate the increment:
if ( endpoint ) {
N -= 1;
}
M = f32( N );
d = f32( f32( stop-start ) / M );
// Generate linearly spaced values:
for ( i = 1; i < N; i++ ) {
x[ ix ] = f32( start + f32( d*i ) );
ix += strideX;
}
// Check whether to include the `stop` value:
if ( endpoint ) {
x[ ix ] = stop;
}
return x;
}
// EXPORTS //
module.exports = slinspace;
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