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@stdlib/blas-ext-base-dcusum

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Calculate the cumulative sum of double-precision floating-point strided array elements.

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/* * @license Apache-2.0 * * Copyright (c) 2020 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. */ // TypeScript Version: 4.1 /** * Interface describing `dcusum`. */ interface Routine { /** * Computes the cumulative sum of double-precision floating-point strided array elements. * * @param N - number of indexed elements * @param sum - initial sum * @param x - input array * @param strideX - `x` stride length * @param y - output array * @param strideY - `y` stride length * @returns output array * * @example * var Float64Array = require( '@stdlib/array-float64' ); * * var x = new Float64Array( [ 1.0, -2.0, 2.0 ] ); * var y = new Float64Array( x.length ); * * dcusum( x.length, 0.0, x, 1, y, 1 ); * // y => <Float64Array>[ 1.0, -1.0, 1.0 ] */ ( N: number, sum: number, x: Float64Array, strideX: number, y: Float64Array, strideY: number ): Float64Array; /** * Computes the cumulative sum of double-precision floating-point strided array elements using alternative indexing semantics. * * @param N - number of indexed elements * @param sum - initial sum * @param x - input array * @param strideX - `x` stride length * @param offsetX - starting index for `x` * @param y - output array * @param strideY - `y` stride length * @param offsetY - starting index for `y` * @returns output array * * @example * var Float64Array = require( '@stdlib/array-float64' ); * * var x = new Float64Array( [ 1.0, -2.0, 2.0 ] ); * var y = new Float64Array( x.length ); * * dcusum.ndarray( x.length, 0.0, x, 1, 0, y, 1, 0 ); * // y => <Float64Array>[ 1.0, -1.0, 1.0 ] */ ndarray( N: number, sum: number, x: Float64Array, strideX: number, offsetX: number, y: Float64Array, strideY: number, offsetY: number ): Float64Array; } /** * Computes the cumulative sum of double-precision floating-point strided array elements. * * @param N - number of indexed elements * @param sum - initial sum * @param x - input array * @param strideX - `x` stride length * @param y - output array * @param strideY - `y` stride length * @returns output array * * @example * var Float64Array = require( '@stdlib/array-float64' ); * * var x = new Float64Array( [ 1.0, -2.0, 2.0 ] ); * var y = new Float64Array( x.length ); * * dcusum( x.length, 0.0, x, 1, y, 1 ); * // y => <Float64Array>[ 1.0, -1.0, 1.0 ] * * @example * var Float64Array = require( '@stdlib/array-float64' ); * * var x = new Float64Array( [ 1.0, -2.0, 2.0 ] ); * var y = new Float64Array( x.length ); * * dcusum.ndarray( x.length, 0.0, x, 1, 0, y, 1, 0 ); * // y => <Float64Array>[ 1.0, -1.0, 1.0 ] */ declare var dcusum: Routine; // EXPORTS // export = dcusum;