[pypy-dev] Re: OT: abs(x) with 4 assembly insns

Michael Hudson mwh at python.net
Mon Sep 29 15:23:37 CEST 2003

Bob Ippolito <bob at redivi.com> writes:

> On Monday, Sep 29, 2003, at 08:23 America/New_York, Michael Hudson
> wrote:
>> Bob Ippolito <bob at redivi.com> writes:
>>>> I've been reading the PPC architecture manual, though, so I can tell
>>>> you that Bob's 3 instructions are all single cycle instructions on a
>>>> G3...
>>> You should also check out IBM's PowerPC Compiler Writer's Guide, if
>>> you  haven't already:
>>> http://www-3.ibm.com/chips/techlib/techlib.nsf/techdocs/
>>> 852569B20050FF7785256996007558C6
>>> Hard copies of this document can be obtained by calling IBM at (800)
>>> 879-2755 and requesting document number SA14-2094, I hear that they
>>> used to (maybe still do) charge $1.00 for the book :)
>> Our Apologies
>> You have attempted to enter a controlled access area that you are not
>> currently entitled to view. IBM Microelectronics uses a entitlement
>> process to protect potentially sensitive data.
>> ... oh well.  I'll dig around for it, though.  And I guess s&h might
>> be more that $1 to the UK...
> Maybe it's restricted to US citizens only?  That would be odd..  I
> tried it in another browser just to make sure it wasn't a baked cookie
> from when I downloaded IBM's PowerPC compilers, and it worked just
> fine.

Using the site search got me the PDF in the end.  Maybe it checks
Referrer headers?  It's not like I care now...

Goody, more reading.


  Of the four project development variables - scope, cost, time and
  quality - quality isn't really a free variable.  The only possible
  values are "excellent" and "insanely excellent", depending on
  whether lives are at stake.              -- Kent Beck, XP Explained

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