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‎docs/git-notes/0486735a3bd3a0f69d5940e7ff590afa18dcecd8.txt

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---
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type: amend-message
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---
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feat: add C implementation for `stats/base/dists/planck/cdf`
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Closes: https://github.com/stdlib-js/stdlib/issues/4883
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‎docs/git-notes/11de1b04a61be7bad540053589639855d319b88f.txt

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---
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type: amend-message
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---
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feat: add C implementation for `stats/base/dists/planck/pmf`
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Closes: https://github.com/stdlib-js/stdlib/issues/4996
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‎docs/git-notes/2b0a046b6c94af24039a72419b9577117459a1c4.txt

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---
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type: amend-message
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---
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feat: add C implementation for `stats/base/dists/planck/kurtosis`
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Closes: https://github.com/stdlib-js/stdlib/issues/4899
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‎docs/git-notes/2e1fd00ef18ea2d3306e2196856c5076003071a2.txt

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---
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type: amend-message
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---
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feat: add C implementation for `stats/base/dists/planck/variance`
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Closes: https://github.com/stdlib-js/stdlib/issues/4907
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‎docs/git-notes/32535910933dcb61a8b0cb47ac76cc789aeff6e0.txt

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---
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type: amend-message
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---
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feat: add C implementation for `stats/base/dists/planck/logpmf`
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Closes: https://github.com/stdlib-js/stdlib/issues/5000
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‎docs/git-notes/56acda846178ab2d33c4ffd73f082d5066873723.txt

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---
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type: amend-message
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---
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feat: add C implementation for stats/base/dists/weibull/skewness
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PR-URL: https://github.com/stdlib-js/stdlib/pull/4053
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Closes: https://github.com/stdlib-js/stdlib/issues/3849
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Co-authored-by: Philipp Burckhardt <[email protected]>
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Co-authored-by: stdlib-bot <[email protected]>
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Reviewed-by: Philipp Burckhardt <[email protected]>
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Signed-off-by: Philipp Burckhardt <[email protected]>

‎docs/git-notes/8987e23a05d1df2d7b062a2211394142dc3853b9.txt

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---
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type: amend-message
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---
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feat: add C implementation for `stats/base/dists/planck/skewness`
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Closes: https://github.com/stdlib-js/stdlib/issues/4905
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‎lib/node_modules/@stdlib/array/struct-factory/lib/is_struct_constructor.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2025 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
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var isFunction = require( '@stdlib/assert/is-function' );
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// MAIN //
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/**
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* Returns a boolean indicating if a value is a `struct` constructor.
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*
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* @private
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* @param {*} value - value to test
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* @returns {boolean} boolean indicating if a value is a `struct` constructor
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*/
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function isStructConstructor( value ) {
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return (
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isFunction( value ) &&
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isPositiveInteger( value.alignment ) &&
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isPositiveInteger( value.byteLength ) &&
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isFunction( value.byteLengthOf ) &&
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isFunction( value.byteOffsetOf ) &&
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isFunction( value.bufferOf ) &&
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isFunction( value.viewOf )
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);
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}
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// EXPORTS //
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module.exports = isStructConstructor;

‎lib/node_modules/@stdlib/array/struct-factory/lib/main.js

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// MODULES //
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var isNonNegativeInteger = require( '@stdlib/assert/is-nonnegative-integer' ).isPrimitive;
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var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
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var isInteger = require( '@stdlib/assert/is-integer' ).isPrimitive;
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var isArrayBuffer = require( '@stdlib/assert/is-arraybuffer' );
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var isCollection = require( '@stdlib/assert/is-collection' );
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var gcopy = require( '@stdlib/blas/base/gcopy' ).ndarray;
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var structFactory = require( '@stdlib/dstructs/struct' );
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var format = require( '@stdlib/string/format' );
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var isStructConstructor = require( './is_struct_constructor.js' );
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var fromArray = require( './from_array.js' );
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var fromIterator = require( './from_iterator.js' );
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var CTOR_NAME = 'StructArray';
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// FUNCTIONS //
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/**
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* Returns a boolean indicating if a value is a `struct` constructor.
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*
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* @private
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* @param {*} value - value to test
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* @returns {boolean} boolean indicating if a value is a `struct` constructor
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*/
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function isStructConstructor( value ) {
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return (
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isFunction( value ) &&
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isPositiveInteger( value.alignment ) &&
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isPositiveInteger( value.byteLength ) &&
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isFunction( value.byteLengthOf ) &&
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isFunction( value.byteOffsetOf ) &&
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isFunction( value.bufferOf ) &&
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isFunction( value.viewOf )
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);
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}
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// MAIN //
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/**
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} else if ( isStructConstructor( arg ) ) {
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Struct = arg;
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} else {
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throw new TypeError( format( 'invalid argument. First argument must be either a struct constructor or struct schema. Value: `%s`.', Struct ) );
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throw new TypeError( format( 'invalid argument. First argument must be either a struct constructor or struct schema. Value: `%s`.', arg ) );
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}
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BYTES_PER_ELEMENT = Struct.byteLength;
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LAYOUT = Struct.layout; // TODO: consider whether to lazily materialize the struct layout, as this could potentially be a long string (hence increased memory consumption) depending on the complexity of the struct

‎lib/node_modules/@stdlib/blas/base/igamax/README.md

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<!--
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@license Apache-2.0
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Copyright (c) 2025 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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# igamax
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> Find the index of the first element having the maximum absolute value.
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<section class="usage">
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## Usage
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```javascript
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var igamax = require( '@stdlib/blas/base/igamax' );
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```
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#### igamax( N, x, strideX )
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Finds the index of the first element having the maximum absolute value.
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```javascript
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var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
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var idx = igamax( x.length, x, 1 );
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// returns 3
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```
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The function has the following parameters:
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- **N**: number of indexed elements.
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- **x**: input array.
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- **strideX**: stride length for `x`.
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The `N` and stride parameters determine which elements in the strided array are accessed at runtime. For example, to traverse every other value,
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```javascript
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var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
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var idx = igamax( 4, x, 2 );
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// returns 2
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```
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Note that indexing is relative to the first index. To introduce an offset, use [`typed array`][mdn-typed-array] views.
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```javascript
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var Float64Array = require( '@stdlib/array/float64' );
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// Initial array:
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var x0 = new Float64Array( [ 1.0, -2.0, 3.0, -4.0, 5.0, -6.0 ] );
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// Create an offset view:
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var x1 = new Float64Array( x0.buffer, x0.BYTES_PER_ELEMENT*1 ); // start at 2nd element
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// Find index of element having the maximum absolute value:
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var idx = igamax( 3, x1, 2 );
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// returns 2
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```
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#### igamax.ndarray( N, x, strideX, offset )
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Finds the index of the first element having the maximum absolute value using alternative indexing semantics.
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```javascript
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var x = [ -2.0, 1.0, 3.0, -5.0, 4.0, 0.0, -1.0, -3.0 ];
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var idx = igamax.ndarray( x.length, x, 1, 0 );
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// returns 3
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```
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The function has the following additional parameters:
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- **offsetX**: starting index.
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While [`typed array`][mdn-typed-array] views mandate a view offset based on the underlying buffer, the offset parameter supports indexing semantics based on a starting index. For example, to start from the second index,
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```javascript
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var x = [ 1.0, -2.0, 3.0, -4.0, 5.0, -6.0 ];
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var idx = igamax.ndarray( 5, x, 1, 1 );
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// returns 4
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```
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</section>
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<!-- /.usage -->
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<section class="notes">
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## Notes
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- If `N < 1`, both functions return `-1`.
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- `igamax()` corresponds to the [BLAS][blas] level 1 function [`idamax`][idamax] with the exception that this implementation works with any array type, not just Float64Arrays. Depending on the environment, the typed versions ([`idamax`][@stdlib/blas/base/idamax], [`isamax`][@stdlib/blas/base/isamax], etc.) are likely to be significantly more performant.
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- Both functions support array-like objects having getter and setter accessors for array element access (e.g., [`@stdlib/array/base/accessor`][@stdlib/array/base/accessor]).
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</section>
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<!-- /.notes -->
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<section class="examples">
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## Examples
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<!-- eslint no-undef: "error" -->
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```javascript
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var discreteUniform = require( '@stdlib/random/array/discrete-uniform' );
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var igamax = require( '@stdlib/blas/base/igamax' );
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var opts = {
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'dtype': 'generic'
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};
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var x = discreteUniform( 10, -100, 100, opts );
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console.log( x );
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var idx = igamax( x.length, x, 1 );
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console.log( idx );
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```
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</section>
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<!-- /.examples -->
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<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
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<section class="related">
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</section>
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<!-- /.related -->
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<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
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<section class="links">
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[blas]: http://www.netlib.org/blas
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[idamax]: https://netlib.org/lapack/explore-html-3.6.1/dd/de0/idamax_8f_a285793254ff0adaf58c605682efb880c.html
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[mdn-typed-array]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
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[@stdlib/blas/base/idamax]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/blas/base/idamax
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[@stdlib/blas/base/isamax]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/blas/base/isamax
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[@stdlib/array/base/accessor]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/base/accessor
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</section>
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<!-- /.links -->

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