Re: Is it possible to do interval arithmetic, simulate passing intervals

Kevin Ryde on Thu, 29 Jul 2021 01:53:40 +0200

[Date Prev] [Date Next] [Thread Prev] [Thread Next] [Date Index] [Thread Index]

Re: Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?

To: pari-users@pari.math.u-bordeaux.fr
Subject: Re: Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?
From: Kevin Ryde <user42_kevin@yahoo.com.au>
Date: Thu, 29 Jul 2021 09:53:09 +1000
References: <CAL+bK4M4v_zssx5TMK2qOJ-3Z6f0ocDBmMs0GtM-XE4CmdHEiQ@mail.gmail.com> <20210728142450.GC12654@yellowpig> <CAL+bK4PvyW=cOa08hvC8xYHLPvyq6NkhZUhwQumX88-xn1xoyA@mail.gmail.com>

I started a bit of poor-man's interval arithmetic for myself

    https://user42.tuxfamily.org/temporary/interval.gp

Believe it works, but the log and exp are not efficient.  I only wanted
a few simple operations, and stay in gp for convenience.  The kinds of
intervals I've used are a few terms of an alternating series, or a few
good decimal digits or bits so a pair of rationals bracketing an actual
value.

References:
- Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?
  - From: Neven Sajko <nsajko@gmail.com>
- Re: Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?
  - From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Re: Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?
  - From: Neven Sajko <nsajko@gmail.com>

Prev by Date: Re: Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?
Previous by thread: Re: Is it possible to do interval arithmetic, simulate passing intervals as function arguments, like in Giac?
Index(es):
- Date
- Thread