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Date: Fri, 1 Oct 2010 11:08:44 -0400
Message-ID: <AANLkTinzZOP48ApfWqybge-0rKNqPAMX_bo4qd=hFxd0@mail.gmail.com>
Subject: Re: <complex.h> for Cygwin?
From: Jan Chludzinski <jan DOT chludzinski AT gmail DOT com>
To: cygwin AT cygwin DOT com
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I need to write some simple code which involves complex values. =A0I
remembered that C99 added support for complex values and tried to use
<complex.h> (different from C++'s <complex>) - I tried ccos() and got
the error below.

Another option is to use GLS?

---John


On Thu, Sep 30, 2010 at 4:18 PM, Marco Atzeri <marco_atzeri AT yahoo DOT it> wrote:
> --- Gio 30/9/10, Jan Chludzinski =A0ha scritto:
>
>> After doing some web searches for
>> <complex.h> and Cygwin, I found
>> there doesn't seem to be any support unless I use:=A0gcc
>> -I/usr/include/mingw -lm tc.c =A0But I still end up with:
>>
>> /cygdrive/c/DOCUME~1/JOHNC~1.ECS/LOCALS~1/Temp/ccAPGnIv.o:tc.c:(.text+0x=
3d):
>> undefined reference to `_ccos'
>> collect2: ld returned 1 exit status
>>
>> I'm really not interested in working with MinGW either.
>> =A0All the
>> messages about <complex.h> and Cygwin are rather old
>> (<2007) so I was
>> hoping that 1.7 would remedy the problem. =A0Evidently not?
>>
>> ---John
>>
>
> John,
> newlib (cygwin libc-like library) has not the complex type,
> however on cygwin complex numbers are supported by
> the gcc/g++ compiler
>
> /usr/lib/gcc/i686-pc-cygwin/4.3.4/include/c++/complex.h
>
> what are exactly your needs ?
>
> Marco

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