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Re: Making 'eq' == 'eql' in bignum branch
From: |
Eli Zaretskii |
Subject: |
Re: Making 'eq' == 'eql' in bignum branch |
Date: |
Sun, 29 Jul 2018 17:35:18 +0300 |
> From: Paul Eggert <address@hidden>
> Date: Sat, 28 Jul 2018 20:34:32 -0700
>
> How about if we do to floats what fixnum+bignum would do to integers?
>
> That is, on a 64-bit host, if the low-order 4 bits of the significand are all
> zero, we encode the floating-point number directly in the Lisp_Object (with a
> tag) so that the Lisp_Object need not be dereferenced and uses zero bytes of
> floating-point heap. Otherwise, we put the floating-point value into a
> special
> hash-consed table that should use about 16 bytes per entry (one for the
> double,
> one for the pointer to it).
How likely is it to see a floating-point number with 4 low-order bits
of mantissa zero?
- Re: Using the GNU GMP Library for Bignums in Emacs, (continued)
- Re: Using the GNU GMP Library for Bignums in Emacs, Richard Stallman, 2018/07/11
- Re: Using the GNU GMP Library for Bignums in Emacs, Tom Tromey, 2018/07/12
- Re: Using the GNU GMP Library for Bignums in Emacs, Richard Stallman, 2018/07/12
- Re: Using the GNU GMP Library for Bignums in Emacs, Stefan Monnier, 2018/07/15
- Re: Using the GNU GMP Library for Bignums in Emacs, Paul Eggert, 2018/07/18
- Re: Using the GNU GMP Library for Bignums in Emacs, Stefan Monnier, 2018/07/18
- Making 'eq' == 'eql' in bignum branch, Paul Eggert, 2018/07/27
- Re: Making 'eq' == 'eql' in bignum branch, Stefan Monnier, 2018/07/28
- Re: Making 'eq' == 'eql' in bignum branch, Paul Eggert, 2018/07/28
- Re: Making 'eq' == 'eql' in bignum branch, Stefan Monnier, 2018/07/29
- Re: Making 'eq' == 'eql' in bignum branch,
Eli Zaretskii <=
- Re: Making 'eq' == 'eql' in bignum branch, Stefan Monnier, 2018/07/30
- Re: Making 'eq' == 'eql' in bignum branch, Eli Zaretskii, 2018/07/30
- Re: Making 'eq' == 'eql' in bignum branch, Stefan Monnier, 2018/07/30
- Re: Making 'eq' == 'eql' in bignum branch, Paul Eggert, 2018/07/30
- Re: Making 'eq' == 'eql' in bignum branch, Eli Zaretskii, 2018/07/30
- Re: Making 'eq' == 'eql' in bignum branch, Paul Eggert, 2018/07/31
- Re: Making 'eq' == 'eql' in bignum branch, Eli Zaretskii, 2018/07/31
- Re: Making 'eq' == 'eql' in bignum branch, Paul Eggert, 2018/07/31
- RE: Making 'eq' == 'eql' in bignum branch, Drew Adams, 2018/07/31
- Re: Making 'eq' == 'eql' in bignum branch, Eli Zaretskii, 2018/07/31