Message-ID: <780856ABB39B4C7F98A74B7131E4932C@desktop2>
From: "Sisyphus" <sisyphus1@optusnet.com.au>
To: <cygwin@cygwin.com>
References: <B762313E2F744EE8A72B2113F081D0D3@desktop2> <46A8939C.340DF017@dessent.net> <11CF7C4D0D334F4EBC16B015D7CB1993@desktop2> <46A8ABD9.4AABEABF@dessent.net>
In-Reply-To: <46A8ABD9.4AABEABF@dessent.net>
Subject: Re: Cygwin Perl and -Duselongdouble
Date: Fri, 27 Jul 2007 20:20:03 +1000
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----- Original Message ----- 
From: "Brian Dessent" <brian@dessent.net>
.
.
>> If I can successfully run 'gcc script.c' (where 'script.c' contains a 
>> call
>> to 'sqrtl') then I'm inclined to say that sqrtl is "available in the C
>> compiler" (or something like that).
>
> But you can't.  That command should fail on Cygwin.

It certainly works for me for 'sqrtl' (but fails for 'frexpl' with 
"undefined reference to `_frexpl'"):

--------------------------------------
Rob@desktop2 ~/C
$ cat script.c
#include <stdio.h>

int main(void) {
    long double x = sqrtl(7);
    printf("%.19Lf\n", x);
    return 0;
}

Rob@desktop2 ~/C
$ gcc script.c

Rob@desktop2 ~/C
$ ./a.exe
2.6457513110645905904

Rob@desktop2 ~/C
--------------------------------------

[Snip - a most helpful explanation of where libc and newlib fit into the 
picture, and of other aspects that I was finding confusing. Thanks for that 
Brian ... much appreciated.]

Cheers,
Rob 


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