[Python-Dev] 3.6.2 update: 3.6.2rc2 coming

2017-07-02 Thread Ned Deily
As you may recall, 3.6.2rc1 was released on 2017-06-17 with an expected release date of 3017-06-30 for 3.6.2 final. As you also may recall, 3.6.2rc1 was delayed a bit to address some security issues including updating our version of libexpat. Shortly after 3.6.2rc1 was released, the expat proj

[Python-Dev] 64 bit units in PyLong

2017-07-02 Thread Siyuan Ren
The current PyLong implementation represents arbitrary precision integers in units of 15 or 30 bits. I presume the purpose is to avoid overflow in addition , subtraction and multiplication. But compilers these days offer intrinsics that allow one to access the overflow flag, and to obtain the resul