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Subject: Re: Clang++ stdlib/cstdlib.h workaround
To: Antonio Olivares <olivares14031@gmail.com>
Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
References: <CAJ5UdcP-Hpa+YqAkwkrv4ec_mV=CaTzDo+kCAADd-JKb25OdeQ@mail.gmail.com>
 <f907f846-f607-40a1-c925-c04d1569ac47@ShaneWare.Biz>
 <CAJ5UdcM7yhBUdPu7fgDazZmXCU3RKVBDz3TkW8s9SgLAPY9SOA@mail.gmail.com>
From: Shane Ambler <FreeBSD@ShaneWare.Biz>
Message-ID: <2b656396-f201-3abe-0bbe-d9a127ae5d39@ShaneWare.Biz>
Date: Thu, 5 Jul 2018 16:06:07 +0930
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On 04/07/2018 22:00, Antonio Olivares wrote:

> About the big number, it would be nice to get it working for bigger
> numbers, but I would need to run it on amd64 freebsd machine at work.
> Maybe at some other time we can revisit this issue.  Thank you for your
> assistance.

You don't need a 64bit machine to use 64bit ints but you do need to use
a recent C/C++ standard, long long was introduced in C99 and C++11. That
is, if you have an issue with long long add -std=c++11 to your CXXFLAGS.

https://en.wikipedia.org/wiki/Integer_(computer_science)#Long_long

There is also a long double

https://en.wikipedia.org/wiki/Long_double

Try it -

#include <stdio.h>

int main()
{
    printf("sizeof long long - %lu\n",sizeof(long long));
    printf("sizeof long double - %lu\n",sizeof(long double));
    return 0;
}


-- 
FreeBSD - the place to B...Software Developing

Shane Ambler