function ind2sub( shape, strides, offset, order, idx, mode, out ) {
	var ndims;
	var len;
	var k;
	var s;
	var i;

	ndims = shape.length;
	len = 1;
	for ( i = 0; i < ndims; i++ ) {
		len *= shape[ i ];
	}
	if ( mode === 'clamp' ) {
		if ( idx < 0 ) {
			idx = 0;
		} else if ( idx >= len ) {
			idx = len - 1;
		}
	} else if ( mode === 'wrap' ) {
		if ( idx < 0 ) {
			idx += len; // slight optimization to avoid modulo arithmetic when |idx| <= len
			if ( idx < 0 ) {
				idx %= len;
				if ( idx !== 0 ) {
					idx += len;
				}
			}
		} else if ( idx >= len ) {
			idx -= len; // slight optimization to avoid modulo arithmetic when len < idx <= 2*len
			if ( idx >= len ) {
				idx %= len;
			}
		}
	} else {
		if ( mode === 'normalize' && idx < 0 ) {
			idx += len;
		}
		if ( idx < 0 || idx >= len ) {
			throw new RangeError( format( 'invalid argument. Linear index must not exceed array dimensions. Number of array elements: `%u`. Value: `%d`.', len, idx ) );
		}
	}
	if ( offset === 0 ) {
		if ( isColumnMajor( order ) ) {
			for ( i = 0; i < ndims; i++ ) {
				s = idx % shape[ i ];
				idx -= s;
				idx /= shape[ i ];
				out[ i ] = s;
			}
			return out;
		}
		// Case: row-major
		for ( i = ndims-1; i >= 0; i-- ) {
			s = idx % shape[ i ];
			idx -= s;
			idx /= shape[ i ];
			out[ i ] = s;
		}
		return out;
	}
	if ( isColumnMajor( order ) ) {
		for ( i = ndims-1; i >= 0; i-- ) {
			s = strides[ i ];
			if ( s < 0 ) {
				k = trunc( idx/s );
				idx -= k * s;
				out[ i ] = shape[ i ] - 1 + k;
			} else {
				k = trunc( idx/s );
				idx -= k * s;
				out[ i ] = k;
			}
		}
		return out;
	}
	// Case: row-major
	for ( i = 0; i < ndims; i++ ) {
		s = strides[ i ];
		if ( s < 0 ) {
			k = trunc( idx/s );
			idx -= k * s;
			out[ i ] = shape[ i ] - 1 + k;
		} else {
			k = trunc( idx/s );
			idx -= k * s;
			out[ i ] = k;
		}
	}
	return out;
}
Converts a linear index to an array of subscripts.

@param {NonNegativeIntegerArray} shape - array shape
@param {IntegerArray} strides - stride array
@param {NonNegativeInteger} offset - location of the first indexed value **based** on the stride array
@param {string} order - specifies whether an array is row-major (C-style) or column-major (Fortran-style)
@param {integer} idx - linear index
@param {string} mode - specifies how to handle a linear index which exceeds array dimensions
@param {(Array|TypedArray|Object)} out - destination object
@throws {RangeError} linear index must not exceed array dimensions
@returns {(Array|TypedArray|Object)} subscripts

@example
var shape = [ 3, 3, 3 ];
var strides = [ 9, 6, 1 ];
var offset = 0;
var order = 'row-major';

var s = [ 0, 0, 0 ];
var out = ind2sub( shape, strides, offset, order, 17, 'throw', s );
// returns [ 1, 2, 2 ]

var bool = ( out === s );
// returns true