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NunoSempere b6addc7f05 feat: add the node modules 
Necessary in order to clearly see the squiggle hotwiring.
2022-12-03 12:44:49 +00:00
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README.md feat: add the node modules 2022-12-03 12:44:49 +00:00

README.md

Uint8ClampedArray

Typed array constructor which returns a typed array representing an array of 8-bit unsigned integers in the platform byte order clamped to 0-255.

Usage

var Uint8ClampedArray = require( '@stdlib/array/uint8c' );

Uint8ClampedArray()

A typed array constructor which returns a typed array representing an array of 8-bit unsigned integers in the platform byte order clamped to 0-255.

var arr = new Uint8ClampedArray();
// returns <Uint8ClampedArray>

Uint8ClampedArray( length )

Returns a typed array having a specified length.

var arr = new Uint8ClampedArray( 5 );
// returns <Uint8ClampedArray>[ 0, 0, 0, 0, 0 ]

Uint8ClampedArray( typedarray )

Creates a typed array from another typed array.

var Float32Array = require( '@stdlib/array/float32' );

var arr1 = new Float32Array( [ 5.0, 5.0, 5.0 ] );
var arr2 = new Uint8ClampedArray( arr1 );
// returns <Uint8ClampedArray>[ 5, 5, 5 ]

Uint8ClampedArray( obj )

Creates a typed array from an array-like object or iterable.

var arr = new Uint8ClampedArray( [ 5.0, 5.0, 5.0 ] );
// returns <Uint8ClampedArray>[ 5, 5, 5 ]

Uint8ClampedArray( buffer[, byteOffset[, length]] )

Returns a typed array view of an ArrayBuffer.

var ArrayBuffer = require( '@stdlib/array/buffer' );

var buf = new ArrayBuffer( 4 );
var arr = new Uint8ClampedArray( buf, 0, 4 );
// returns <Uint8ClampedArray>[ 0, 0, 0, 0 ]

Properties

Uint8ClampedArray.BYTES_PER_ELEMENT

Number of bytes per view element.

var nbytes = Uint8ClampedArray.BYTES_PER_ELEMENT;
// returns 1

Uint8ClampedArray.name

Typed array constructor name.

var str = Uint8ClampedArray.name;
// returns 'Uint8ClampedArray'

Uint8ClampedArray.prototype.buffer

Read-only property which returns the ArrayBuffer referenced by the typed array.

var arr = new Uint8ClampedArray( 5 );
var buf = arr.buffer;
// returns <ArrayBuffer>

Uint8ClampedArray.prototype.byteLength

Read-only property which returns the length (in bytes) of the typed array.

var arr = new Uint8ClampedArray( 5 );
var byteLength = arr.byteLength;
// returns 5

Uint8ClampedArray.prototype.byteOffset

Read-only property which returns the offset (in bytes) of the typed array from the start of its ArrayBuffer.

var arr = new Uint8ClampedArray( 5 );
var byteOffset = arr.byteOffset;
// returns 0

Uint8ClampedArray.prototype.BYTES_PER_ELEMENT

Number of bytes per view element.

var arr = new Uint8ClampedArray( 5 );
var nbytes = arr.BYTES_PER_ELEMENT;
// returns 1

Uint8ClampedArray.prototype.length

Read-only property which returns the number of view elements.

var arr = new Uint8ClampedArray( 5 );
var len = arr.length;
// returns 5

Methods

Uint8ClampedArray.from( src[, map[, thisArg]] )

Creates a new typed array from an array-like object or an iterable.

var arr = Uint8ClampedArray.from( [ 1, 2 ] );
// returns <Uint8ClampedArray>[ 1, 2 ]

To invoke a function for each src value, provide a callback function.

function mapFcn( v ) {
    return v * 2;
}

var arr = Uint8ClampedArray.from( [ 1, 2 ], mapFcn );
// returns <Uint8ClampedArray>[ 2, 4 ]

A callback function is provided two arguments:

  • value: source value
  • index: source index

To set the callback execution context, provide a thisArg.

function mapFcn( v ) {
    this.count += 1;
    return v * 2;
}

var ctx = {
    'count': 0
};

var arr = Uint8ClampedArray.from( [ 1, 2 ], mapFcn, ctx );
// returns <Uint8ClampedArray>[ 2, 4 ]

var n = ctx.count;
// returns 2

Uint8ClampedArray.of( element0[, element1[, ...elementN]] )

Creates a new typed array from a variable number of arguments.

var arr = Uint8ClampedArray.of( 1, 2 );
// returns <Uint8ClampedArray>[ 1, 2 ]

Uint8ClampedArray.prototype.copyWithin( target, start[, end] )

Copies a sequence of elements within an array starting at start and ending at end (non-inclusive) to the position starting at target.

var arr = new Uint8ClampedArray( [ 1, 2, 3, 4, 5 ] );

// Copy the last two elements to the first two elements:
arr.copyWithin( 0, 3 );

var v = arr[ 0 ];
// returns 4

v = arr[ 1 ];
// returns 5

By default, end equals the number of array elements (i.e., one more than the last array index). To limit the sequence length, provide an end argument.

var arr = new Uint8ClampedArray( [ 1, 2, 3, 4, 5 ] );

// Copy the first two elements to the last two elements:
arr.copyWithin( 3, 0, 2 );

var v = arr[ 3 ];
// returns 1

v = arr[ 4 ];
// returns 2

When a target, start, and/or end index is negative, the respective index is determined relative to the last array element. The following example achieves the same behavior as the previous example:

var arr = new Uint8ClampedArray( [ 1, 2, 3, 4, 5 ] );

// Copy the first two elements to the last two elements:
arr.copyWithin( -2, -5, -3 );

var v = arr[ 3 ];
// returns 1

v = arr[ 4 ];
// returns 2

Uint8ClampedArray.prototype.entries()

Returns an iterator for iterating over array key-value pairs.

var arr = new Uint8ClampedArray( [ 1, 2 ] );

// Create an iterator:
var it = arr.entries();

// Iterate over key-value pairs...
var v = it.next().value;
// returns [ 0, 1 ]

v = it.next().value;
// returns [ 1, 2 ]

var bool = it.next().done;
// returns true

Uint8ClampedArray.prototype.every( predicate[, thisArg] )

Tests whether all array elements pass a test implemented by a predicate function.

function predicate( v ) {
    return ( v <= 1 );
}

var arr = new Uint8ClampedArray( [ 1, 2 ] );

var bool = arr.every( predicate );
// returns false

A predicate function is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function predicate( v ) {
    this.count += 1;
    return ( v >= 1 );
}

var ctx = {
    'count': 0
};

var arr = new Uint8ClampedArray( [ 1, 2 ] );

var bool = arr.every( predicate, ctx );
// returns true

var n = ctx.count;
// returns 2

Uint8ClampedArray.prototype.fill( value[, start[, end]] )

Fills an array from a start index to an end index (non-inclusive) with a provided value.

var arr = new Uint8ClampedArray( 2 );

// Set all array elements to the same value:
arr.fill( 2 );

var v = arr[ 0 ];
// returns 2

v = arr[ 1 ];
// returns 2

// Set all array elements starting from the first index to the same value:
arr.fill( 3, 1 );

v = arr[ 0 ];
// returns 2

v = arr[ 1 ];
// returns 3

// Set all array elements, except the last element, to the same value:
arr.fill( 4, 0, arr.length-1 );

v = arr[ 0 ];
// returns 4

v = arr[ 1 ];
// returns 3

When a start and/or end index is negative, the respective index is determined relative to the last array element.

var arr = new Uint8ClampedArray( 2 );

// Set all array elements, except the last element, to the same value:
arr.fill( 2, -arr.length, -1 );

var v = arr[ 0 ];
// returns 2

v = arr[ 1 ];
// returns 0

Uint8ClampedArray.prototype.filter( predicate[, thisArg] )

Creates a new array (of the same data type as the host array) which includes those elements for which a predicate function returns a truthy value.

function predicate( v ) {
    return ( v >= 2 );
}

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.filter( predicate );
// returns <Uint8ClampedArray>[ 2, 3 ]

If a predicate function does not return a truthy value for any array element, the method returns an empty array.

function predicate( v ) {
    return ( v >= 10 );
}

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.filter( predicate );
// returns <Uint8ClampedArray>[]

A predicate function is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function predicate( v ) {
    this.count += 1;
    return ( v >= 2 );
}

var ctx = {
    'count': 0
};

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.filter( predicate, ctx );

var n = ctx.count;
// returns 3

Uint8ClampedArray.prototype.find( predicate[, thisArg] )

Returns the first array element for which a provided predicate function returns a truthy value.

function predicate( v ) {
    return ( v > 2 );
}

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var v = arr.find( predicate );
// returns 3

If a predicate function does not return a truthy value for any array element, the method returns undefined.

function predicate( v ) {
    return ( v < 1 );
}

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var v = arr.find( predicate );
// returns undefined

A predicate function is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function predicate( v ) {
    this.count += 1;
    return ( v > 2 );
}

var ctx = {
    'count': 0
};

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var v = arr.find( predicate, ctx );
// returns 3

var n = ctx.count;
// returns 3

Uint8ClampedArray.prototype.findIndex( predicate[, thisArg] )

Returns the index of the first array element for which a provided predicate function returns a truthy value.

function predicate( v ) {
    return ( v >= 3 );
}

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var idx = arr.findIndex( predicate );
// returns 2

If a predicate function does not return a truthy value for any array element, the method returns -1.

function predicate( v ) {
    return ( v < 1 );
}

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var idx = arr.findIndex( predicate );
// returns -1

A predicate function is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function predicate( v ) {
    this.count += 1;
    return ( v >= 3 );
}

var ctx = {
    'count': 0
};

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var idx = arr.findIndex( predicate, ctx );
// returns 2

var n = ctx.count;
// returns 3

Uint8ClampedArray.prototype.forEach( fcn[, thisArg] )

Invokes a callback for each array element.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var str = '';

function fcn( v, i ) {
    str += i + ':' + v;
    if ( i < arr.length-1 ) {
        str += ' ';
    }
}

arr.forEach( fcn );

console.log( str );
// => '0:1 1:2 2:3'

The callback is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function fcn() {
    this.count += 1;
}

var ctx = {
    'count': 0
};

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

arr.forEach( fcn, ctx );

var n = ctx.count;
// returns 3

Uint8ClampedArray.prototype.includes( searchElement[, fromIndex] )

Returns a boolean indicating whether an array includes a search element.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var bool = arr.includes( 3 );
// returns true

bool = arr.includes( 0 );
// returns false

By default, the method searches the entire array (fromIndex = 0). To begin searching from a specific array index, provide a fromIndex.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var bool = arr.includes( 1, 1 );
// returns false

When a fromIndex is negative, the starting index is resolved relative to the last array element.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

bool = arr.includes( 1, -2 );
// returns false

Uint8ClampedArray.prototype.indexOf( searchElement[, fromIndex] )

Returns the index of the first array element strictly equal to a search element.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var idx = arr.indexOf( 3 );
// returns 2

idx = arr.indexOf( 0 );
// returns -1

By default, the method searches the entire array (fromIndex = 0). To begin searching from a specific array index, provide a fromIndex.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var idx = arr.indexOf( 1, 1 );
// returns -1

When a fromIndex is negative, the starting index is resolved relative to the last array element.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var idx = arr.indexOf( 1, -2 );
// returns -1

Uint8ClampedArray.prototype.join( [separator] )

Serializes an array by joining all array elements as a string.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var str = arr.join();
// returns '1,2,3'

By default, the method delineates array elements using a comma ,. To specify a custom separator, provide a separator string.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var str = arr.join( '|' );
// returns '1|2|3'

Uint8ClampedArray.prototype.keys()

Returns an iterator for iterating over array keys.

var arr = new Uint8ClampedArray( [ 1, 2 ] );

// Create an iterator:
var it = arr.keys();

// Iterate over keys...
var v = it.next().value;
// returns 0

v = it.next().value;
// returns 1

var bool = it.next().done;
// returns true

Uint8ClampedArray.prototype.lastIndexOf( searchElement[, fromIndex] )

Returns the index of the last array element strictly equal to a search element, iterating from right to left.

var arr = new Uint8ClampedArray( [ 1, 0, 2, 0, 1 ] );

var idx = arr.lastIndexOf( 0 );
// returns 3

idx = arr.lastIndexOf( 3 );
// returns -1

By default, the method searches the entire array (fromIndex = -1). To begin searching from a specific array index, provide a fromIndex.

var arr = new Uint8ClampedArray( [ 1, 0, 2, 0, 1 ] );

var idx = arr.lastIndexOf( 0, 2 );
// returns 1

When a fromIndex is negative, the starting index is resolved relative to the last array element.

var arr = new Uint8ClampedArray( [ 1, 0, 2, 0, 1 ] );

var idx = arr.lastIndexOf( 0, -3 );
// returns 1

Uint8ClampedArray.prototype.map( fcn[, thisArg] )

Maps each array element to an element in a new array having the same data type as the host array.

function fcn( v ) {
    return v * 2;
}

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.map( fcn );
// returns <Uint8ClampedArray>[ 2, 4, 6 ]

A callback is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function fcn( v ) {
    this.count += 1;
    return v * 2;
}

var ctx = {
    'count': 0
};

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.map( fcn, ctx );

var n = ctx.count;
// returns 3

Uint8ClampedArray.prototype.reduce( fcn[, initialValue] )

Applies a function against an accumulator and each element in an array and returns the accumulated result.

function fcn( acc, v ) {
    return acc + ( v*v );
}

var arr = new Uint8ClampedArray( [ 2, 1, 3 ] );

var v = arr.reduce( fcn );
// returns 12

If not provided an initial value, the method invokes a provided function with the first array element as the first argument and the second array element as the second argument.

If provided an initial value, the method invokes a provided function with the initial value as the first argument and the first array element as the second argument.

function fcn( acc, v ) {
    return acc + ( v*v );
}

var arr = new Uint8ClampedArray( [ 2, 1, 3 ] );

var v = arr.reduce( fcn, 0 );
// returns 14

A callback is provided four arguments:

  • acc: accumulated result
  • value: array element
  • index: array index
  • arr: array on which the method is invoked

Uint8ClampedArray.prototype.reduceRight( fcn[, initialValue] )

Applies a function against an accumulator and each element in an array and returns the accumulated result, iterating from right to left.

function fcn( acc, v ) {
    return acc + ( v*v );
}

var arr = new Uint8ClampedArray( [ 2, 1, 3 ] );

var v = arr.reduceRight( fcn );
// returns 8

If not provided an initial value, the method invokes a provided function with the last array element as the first argument and the second-to-last array element as the second argument.

If provided an initial value, the method invokes a provided function with the initial value as the first argument and the last array element as the second argument.

function fcn( acc, v ) {
    return acc + ( v*v );
}

var arr = new Uint8ClampedArray( [ 2, 1, 3 ] );

var v = arr.reduce( fcn, 0 );
// returns 14

A callback is provided four arguments:

  • acc: accumulated result
  • value: array element
  • index: array index
  • arr: array on which the method is invoked

Uint8ClampedArray.prototype.reverse()

Reverses an array in-place (thus mutating the array on which the method is invoked).

var arr = new Uint8ClampedArray( [ 2, 0, 3 ] );

// Reverse the array:
arr.reverse();

var v = arr[ 0 ];
// returns 3

v = arr[ 1 ];
// returns 0

v = arr[ 2 ];
// returns 2

Uint8ClampedArray.prototype.set( arr[, offset] )

Sets array elements.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );
// returns <Uint8ClampedArray>[ 1, 2, 3 ]

// Set the first two array elements:
arr.set( [ 4, 5 ] );

var v = arr[ 0 ];
// returns 4

v = arr[ 1 ];
// returns 5

By default, the method starts writing values at the first array index. To specify an alternative index, provide an index offset.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );
// returns <Uint8ClampedArray>[ 1, 2, 3 ]

// Set the last two array elements:
arr.set( [ 4, 5 ], 1 );

var v = arr[ 1 ];
// returns 4

v = arr[ 2 ];
// returns 5

Uint8ClampedArray.prototype.slice( [begin[, end]] )

Copies array elements to a new array with the same underlying data type as the host array.

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.slice();

var bool = ( arr1 === arr2 );
// returns false

bool = ( arr1.buffer === arr2.buffer );
// returns false

var v = arr2[ 0 ];
// returns 1

v = arr2[ 1 ];
// returns 2

v = arr2[ 2 ];
// returns 3

By default, the method copies elements beginning with the first array element. To specify an alternative array index at which to begin copying, provide a begin index (inclusive).

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.slice( 1 );

var len = arr2.length;
// returns 2

var v = arr2[ 0 ];
// returns 2

v = arr2[ 1 ];
// returns 3

By default, the method copies all array elements after begin. To specify an alternative array index at which to end copying, provide an end index (exclusive).

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.slice( 0, 2 );

var len = arr2.length;
// returns 2

var v = arr2[ 0 ];
// returns 1

v = arr2[ 1 ];
// returns 2

When a begin and/or end index is negative, the respective index is determined relative to the last array element.

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.slice( -arr1.length, -1 );

var len = arr2.length;
// returns 2

var v = arr2[ 0 ];
// returns 1

v = arr2[ 1 ];
// returns 2

Uint8ClampedArray.prototype.some( predicate[, thisArg] )

Tests whether at least one array element passes a test implemented by a predicate function.

function predicate( v ) {
    return ( v >= 2 );
}

var arr = new Uint8ClampedArray( [ 1, 2 ] );

var bool = arr.some( predicate );
// returns true

A predicate function is provided three arguments:

  • value: array element
  • index: array index
  • arr: array on which the method is invoked

To set the callback execution context, provide a thisArg.

function predicate( v ) {
    this.count += 1;
    return ( v >= 2 );
}

var ctx = {
    'count': 0
};

var arr = new Uint8ClampedArray( [ 1, 1 ] );

var bool = arr.some( predicate, ctx );
// returns false

var n = ctx.count;
// returns 2

Uint8ClampedArray.prototype.sort( [compareFunction] )

Sorts an array in-place (thus mutating the array on which the method is invoked).

var arr = new Uint8ClampedArray( [ 2, 3, 0 ] );

// Sort the array (in ascending order):
arr.sort();

var v = arr[ 0 ];
// returns 0

v = arr[ 1 ];
// returns 2

v = arr[ 2 ];
// returns 3

By default, the method sorts array elements in ascending order. To impose a custom order, provide a compareFunction.

function descending( a, b ) {
    return b - a;
}

var arr = new Uint8ClampedArray( [ 2, 3, 0 ] );

// Sort the array (in descending order):
arr.sort( descending );

var v = arr[ 0 ];
// returns 3

v = arr[ 1 ];
// returns 2

v = arr[ 2 ];
// returns 0

The comparison function is provided two array elements, a and b, per invocation, and its return value determines the sort order as follows:

  • If the comparison function returns a value less than zero, then the method sorts a to an index lower than b (i.e., a should come before b).
  • If the comparison function returns a value greater than zero, then the method sorts a to an index higher than b (i.e., b should come before a).
  • If the comparison function returns zero, then the relative order of a and b should remain unchanged.

Uint8ClampedArray.prototype.subarray( [begin[, end]] )

Creates a new typed array view over the same underlying ArrayBuffer and with the same underlying data type as the host array.

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.subarray();
// returns <Uint8ClampedArray>[ 1, 2, 3 ]

var bool = ( arr1.buffer === arr2.buffer );
// returns true

By default, the method creates a typed array view beginning with the first array element. To specify an alternative array index at which to begin, provide a begin index (inclusive).

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.subarray( 1 );
// returns <Uint8ClampedArray>[ 2, 3 ]

var bool = ( arr1.buffer === arr2.buffer );
// returns true

By default, the method creates a typed array view which includes all array elements after begin. To limit the number of array elements after begin, provide an end index (exclusive).

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.subarray( 0, 2 );
// returns <Uint8ClampedArray>[ 1, 2 ]

var bool = ( arr1.buffer === arr2.buffer );
// returns true

When a begin and/or end index is negative, the respective index is determined relative to the last array element.

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.subarray( -arr1.length, -1 );
// returns <Uint8ClampedArray>[ 1, 2 ]

var bool = ( arr1.buffer === arr2.buffer );
// returns true

If the method is unable to resolve indices to a non-empty array subsequence, the method returns an empty typed array.

var arr1 = new Uint8ClampedArray( [ 1, 2, 3 ] );

var arr2 = arr1.subarray( 10, -1 );
// returns <Uint8ClampedArray>[]

Uint8ClampedArray.prototype.toLocaleString( [locales[, options]] )

Serializes an array as a locale-specific string.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var str = arr.toLocaleString();
// returns '1,2,3'

Uint8ClampedArray.prototype.toString()

Serializes an array as a string.

var arr = new Uint8ClampedArray( [ 1, 2, 3 ] );

var str = arr.toString();
// returns '1,2,3'

Uint8ClampedArray.prototype.values()

Returns an iterator for iterating over array elements.

var arr = new Uint8ClampedArray( [ 1, 2 ] );

// Create an iterator:
var it = arr.values();

// Iterate over array elements...
var v = it.next().value;
// returns 1

v = it.next().value;
// returns 2

var bool = it.next().done;
// returns true

Examples

var randu = require( '@stdlib/random/base/randu' );
var round = require( '@stdlib/math/base/special/round' );
var ctor = require( '@stdlib/array/uint8c' );

var arr;
var i;

arr = new ctor( 10 );
for ( i = 0; i < arr.length; i++ ) {
    arr[ i ] = round( randu()*100.0 );
}
console.log( arr );