Re: [Help-gsl] IEEE environment variable under Windows

[Chao Ding]

Thanks Xuebin!

I tried to set an environment variable through "My Computer", and
there are two different return message depending on the variable value
setting. I am attaching the setting and corresponding message:

---------------- (1) -------------
Variable name: GSL_IEEE_MODE
Variable value: "mask-underflow"
message: unrecognized GSL_IEEE_MODE string. valid strings are .....

---------------- (2) -------------
Variable name: GSL_IEEE_MODE
Variable value: mask-underflow
message: GSL IEEE interface for this platform is not supported or
could not be determined at configure time

My guess is that the second setting is right, but maybe the GSL_IEEE
interface does not work in Windows at all. However, from the message
(1), it seems the system recognizes the GSL_IEEE_MODE variable and
knows the valid strings.
If it could work in Windows but just "could not be determined at
configure time", does anyone know how to set it up in Windows?

If anyone know a certain answer whether the GSL_IEEE interface works
in Windows, please let me know. Thanks a lot.

Best,
Chao




On Wed, Jul 7, 2010 at 3:48 AM, Xuebin Wu <address@hidden> wrote:
> I am not sure if this mechanism works in Windows, but obviously it does not
> work in your way.
>
> In Linux, you need to set the evironment variable in your shell. In Windows,
> you can set evrionmental variable through the property of "My Computer", but
> i am not sure if gsl can read it.
>
> On Mon, Jul 5, 2010 at 12:13 AM, Chao Ding <address@hidden> wrote:
>>
>> Hi there,
>>
>> I have two related questions here.
>>
>> I am using GSL in Visual C++ 2008 Express under Windows and receive
>> underflow error handler message. From google, I think the right way to
>> get rid of it is to set GSL_IEEE_MODE = "mask-underflow", am I right?
>>
>> Assume I am right about the way to get rid of the underflow message,
>> the second problem is that, although I followed the instruction in
>> Chapter 41 in the manual to set the IEEE environment variable
>> GSL_IEEE_MODE, but I did not figure out the correct format. I guess it
>> is a stupid format question but I do not know how. Here is my code:
>> -------------------------------------------------------------
>> #include <gsl/gsl_ieee_utils.h>
>>
>> void main{
>>   GSL_IEEE_MODE = "mask-underflow, double-precision, mask-denormalized";
>>   gsl_ieee_env_setup();
>>   ....
>> }
>> -------------------------------------------------------------
>> which returns the error message that " 'GSL_IEEE_MODE' : undeclared
>> identifier" at Building Solution.
>>
>> Does anyone how to solve the problem? Thanks a lot!
>>
>> Chao
>>
>> _______________________________________________
>> Help-gsl mailing list
>> address@hidden
>> http://lists.gnu.org/mailman/listinfo/help-gsl
>
>