aureooms/js-hypermatrix

/**
 * Matrix transposer
 * @param {int[]} dim dimensions size array
 * @param {int[]} map the transposition map
 * @param {int[]} index storage array used to resolve matrix indices
 */


var transpose = function ( a , dim , i , last , map , index , b ) {

    var n , j , k ;

    n = dim[i] ;
    k = map[i] ;

    if ( i === last ) {

        for ( j = 0 ; j < n ; ++j ) {
            index[k] = j ;
            b[j] = resolve( a , index , 0 , index.length - 1 ) ;
        }

    }

    else {

        ++i ;

        for ( j = 0 ; j < n ; ++j ) {
            index[k] = j ;
            transpose( a , dim , i , last , map , index , b[j] ) ;
        }
    }

} ;

exports.transpose = transpose ;