[aiky]

var n = ..
var eps = 1.11E-16;

var converge = function(xk, xkp){
  for (var i = 0; i < n; i++)
    if(Math.abs(xk[i] - xkp[i]) >= eps) return false;
  return true;
}
  
do{
  for(var i = 0; i < n; i++){
    var v = 0;
    for (j = 0; j < n; j++) 
      if (j != i) v += (a[i][j] * x[j]);
    p[i] = x[i];
    x[i] = (b[i] - v) / a[i][i];
  }
}
while (!converge(x, p));