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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.
*/
/* eslint-disable no-restricted-syntax, no-invalid-this */
'use strict';
// MODULES //
var isWebAssemblyMemory = require( '@stdlib/assert/is-wasm-memory' );
var setReadOnly = require( '@stdlib/utils/define-nonenumerable-read-only-property' );
var inherits = require( '@stdlib/utils/inherit' );
var WasmModule = require( '@stdlib/wasm/module-wrapper' );
var format = require( '@stdlib/string/format' );
var wasmBinary = require( './binary.js' );
// MAIN //
/**
* STATS routine WebAssembly module wrapper constructor.
*
* @constructor
* @param {Object} memory - WebAssembly memory instance
* @throws {TypeError} must provide a WebAssembly memory instance
* @returns {Module} module instance
*
* @example
* var Memory = require( '@stdlib/wasm/memory' );
* var zeros = require( '@stdlib/array/zeros' );
* var Float64Array = require( '@stdlib/array/float64' );
* var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
*
* // Create a new memory instance with an initial size of 10 pages (640KiB) and a maximum size of 100 pages (6.4MiB):
* var mem = new Memory({
* 'initial': 10,
* 'maximum': 100
* });
*
* // Create a STATS routine:
* var dcumax = new Module( mem );
* // returns <Module>
*
* // Initialize the routine:
* dcumax.initializeSync();
*
* // Define a vector data type:
* var dtype = 'float64';
*
* // Specify a vector length:
* var N = 5;
*
* // Define pointers (i.e., byte offsets) for storing two vectors:
* var xptr = 0;
* var yptr = N * bytesPerElement( dtype );
*
* // Define strided array:
* var arr = new Float64Array( [ 1.0, -2.0, 2.0, -3.0, 3.0 ] );
*
* // Write vector values to module memory:
* dcumax.write( xptr, arr );
* dcumax.write( yptr, zeros( N, dtype ) );
*
* // Perform computation:
* var ptr = dcumax.main( N, xptr, 1, yptr, 1 );
* // returns <number>
*
* var bool = ( ptr === yptr );
* // returns true
*
* // Read out the results:
* var view = zeros( N, dtype );
* dcumax.read( yptr, view );
* // view => <Float64Array>[ 1.0, 1.0, 2.0, 2.0, 3.0 ]
*/
function Module( memory ) {
if ( !( this instanceof Module ) ) {
return new Module( memory );
}
if ( !isWebAssemblyMemory( memory ) ) {
throw new TypeError( format( 'invalid argument. Must provide a WebAssembly memory instance. Value: `%s`.', memory ) );
}
// Call the parent constructor:
WasmModule.call( this, wasmBinary, memory, {
'env': {
'memory': memory
}
});
return this;
}
// Inherit from the parent constructor:
inherits( Module, WasmModule );
/**
* Computes the cumulative maximum of double-precision floating-point strided array elements.
*
* @name main
* @memberof Module.prototype
* @readonly
* @type {Function}
* @param {PositiveInteger} N - number of indexed elements
* @param {NonNegativeInteger} xptr - input array pointer (i.e., byte offset)
* @param {integer} strideX - `x` stride length
* @param {NonNegativeInteger} yptr - output array pointer (i.e., byte offset)
* @param {integer} strideY - `y` stride length
* @returns {NonNegativeInteger} output array pointer (i.e., byte offset)
*
* @example
* var Memory = require( '@stdlib/wasm/memory' );
* var zeros = require( '@stdlib/array/zeros' );
* var Float64Array = require( '@stdlib/array/float64' );
* var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
*
* // Create a new memory instance with an initial size of 10 pages (640KiB) and a maximum size of 100 pages (6.4MiB):
* var mem = new Memory({
* 'initial': 10,
* 'maximum': 100
* });
*
* // Create a STATS routine:
* var dcumax = new Module( mem );
* // returns <Module>
*
* // Initialize the routine:
* dcumax.initializeSync();
*
* // Define a vector data type:
* var dtype = 'float64';
*
* // Specify a vector length:
* var N = 5;
*
* // Define pointers (i.e., byte offsets) for storing two vectors:
* var xptr = 0;
* var yptr = N * bytesPerElement( dtype );
*
* // Define strided array:
* var arr = new Float64Array( [ 1.0, -2.0, 2.0, -3.0, 3.0 ] );
*
* // Write vector values to module memory:
* dcumax.write( xptr, arr );
* dcumax.write( yptr, zeros( N, dtype ) );
*
* // Perform computation:
* var ptr = dcumax.main( N, xptr, 1, yptr, 1 );
* // returns <number>
*
* var bool = ( ptr === yptr );
* // returns true
*
* // Read out the results:
* var view = zeros( N, dtype );
* dcumax.read( yptr, view );
* // view => <Float64Array>[ 1.0, 1.0, 2.0, 2.0, 3.0 ]
*/
setReadOnly( Module.prototype, 'main', function dcumax( N, xptr, strideX, yptr, strideY ) { // eslint-disable-line stdlib/jsdoc-doctest-decimal-point
this._instance.exports.stdlib_strided_dcumax( N, xptr, strideX, yptr, strideY );
return yptr;
});
/**
* Computes the cumulative maximum of double-precision floating-point strided array elements using alternative indexing semantics.
*
* @name ndarray
* @memberof Module.prototype
* @readonly
* @type {Function}
* @param {PositiveInteger} N - number of indexed elements
* @param {NonNegativeInteger} xptr - input array pointer (i.e., byte offset)
* @param {integer} strideX - `x` stride length
* @param {NonNegativeInteger} offsetX - starting `x` index
* @param {NonNegativeInteger} yptr - output array pointer (i.e., byte offset)
* @param {integer} strideY - `y` stride length
* @param {NonNegativeInteger} offsetY - starting `y` index
* @returns {NonNegativeInteger} output array pointer (i.e., byte offset)
*
* @example
* var Memory = require( '@stdlib/wasm/memory' );
* var zeros = require( '@stdlib/array/zeros' );
* var Float64Array = require( '@stdlib/array/float64' );
* var bytesPerElement = require( '@stdlib/ndarray/base/bytes-per-element' );
*
* // Create a new memory instance with an initial size of 10 pages (640KiB) and a maximum size of 100 pages (6.4MiB):
* var mem = new Memory({
* 'initial': 10,
* 'maximum': 100
* });
*
* // Create a STATS routine:
* var dcumax = new Module( mem );
* // returns <Module>
*
* // Initialize the routine:
* dcumax.initializeSync();
*
* // Define a vector data type:
* var dtype = 'float64';
*
* // Specify a vector length:
* var N = 5;
*
* // Define pointers (i.e., byte offsets) for storing two vectors:
* var xptr = 0;
* var yptr = N * bytesPerElement( dtype );
*
* // Define strided array:
* var arr = new Float64Array( [ 1.0, -2.0, 2.0, -3.0, 3.0 ] );
*
* // Write vector values to module memory:
* dcumax.write( xptr, arr );
* dcumax.write( yptr, zeros( N, dtype ) );
*
* // Perform computation:
* var ptr = dcumax.ndarray( N, xptr, 1, 0, yptr, 1, 0 );
* // returns <number>
*
* var bool = ( ptr === yptr );
* // returns true
*
* // Read out the results:
* var view = zeros( N, dtype );
* dcumax.read( yptr, view );
* // view => <Float64Array>[ 1.0, 1.0, 2.0, 2.0, 3.0 ]
*/
setReadOnly( Module.prototype, 'ndarray', function dcumax( N, xptr, strideX, offsetX, yptr, strideY, offsetY ) { // eslint-disable-line stdlib/jsdoc-doctest-decimal-point
this._instance.exports.stdlib_strided_dcumax_ndarray( N, xptr, strideX, offsetX, yptr, strideY, offsetY ); // eslint-disable-line max-len
return yptr;
});
// EXPORTS //
module.exports = Module;
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