add methods to get and set blocks. This will help in partitioning algorithms and, eventually, autothreading
add methods to get and set blocks. This will help in partitioning algorithms and, eventually, autothreading

fernandobrito/parrot-linear-algebra,Whiteknight/parrot-linear-algebra,fernandobrito/parrot-linear-algebra,fernandobrito/parrot-linear-algebra,fernandobrito/parrot-linear-algebra,Whiteknight/parrot-linear-algebra