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Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master
From: |
Hermann Peifer |
Subject: |
Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches |
Date: |
Thu, 8 Feb 2018 07:33:58 +0100 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
On 08.02.18 00:04, Andrew J. Schorr wrote:
> On Wed, Feb 07, 2018 at 10:01:35PM +0100, Hermann Peifer wrote:
>> $ echo
>> 123456790123456790123456790123456790123456790123456790123454320987654320987654320987654320987654320987654320987654321
>> 1234567901234567901234567901234567901234567901234567901234 | ./gawk -M
>> -l extension/.libs/intdiv.so '{printf "%d\n", $1/$2; intdiv($1, $2, r);
>> print r["quotient"]}'
>> 99999999999999997168788049560464200849936328366177157906432
>> 99999999999999997168788049560464200849936328366177157906432
>> $
>> $ echo
>> 123456790123456790123456790123456790123456790123456790123454320987654320987654320987654320987654320987654320987654321
>> 1234567901234567901234567901234567901234567901234567901234 | ./gawk -M
>> -l extension/.libs/intdiv.so -vPREC=400 '{printf "%d\n", $1/$2;
>> intdiv($1, $2, r); print r["quotient"]}'
>> 100000000000000000000000000000000000000000000000000000000044
>> 99999999999999997168788049560464200849936328366177157906432
>
> Very interesting. And what happens if you use the intdiv0 function
> instead (with and without PREC=400?
>
The intdiv0 function gives the expected result, both with and without
PREC=400.
Hermann
$ git status
On branch master
Your branch is up to date with 'origin/master'.
nothing to commit, working tree clean
$ ./bootstrap.sh && ./configure --enable-builtin-intdiv0 && make -j
...
$ echo
123456790123456790123456790123456790123456790123456790123454320987654320987654320987654320987654320987654320987654321
1234567901234567901234567901234567901234567901234567901234 | ./gawk -M
'{printf "%d\n", $1/$2; intdiv0($1, $2, r); print r["quotient"]}'
99999999999999997168788049560464200849936328366177157906432
100000000000000000000000000000000000000000000000000000000044
$
$ echo
123456790123456790123456790123456790123456790123456790123454320987654320987654320987654320987654320987654320987654321
1234567901234567901234567901234567901234567901234567901234 | ./gawk -M
-vPREC=400 '{printf "%d\n", $1/$2; intdiv0($1, $2, r); print r["quotient"]}'
100000000000000000000000000000000000000000000000000000000044
100000000000000000000000000000000000000000000000000000000044
$
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, (continued)
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/06
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/06
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/06
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/06
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches,
Hermann Peifer <=
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/07
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, arnold, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, arnold, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, arnold, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, arnold, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Andrew J. Schorr, 2018/02/08
- Re: [bug-gawk] macOS: mpfrsqrt check fails on gawk-4.2-stable and master branches, Hermann Peifer, 2018/02/08