gnuplot-beta

not_a_number for MinGW build (gcc-4.5.0)

[Tatsuro M. <tma...@ya...>]

Hello

For current windows binaries,
gnuplot> pr NaN
0.0

This is not correct.

For the cygwin and the djgpp (modified recently) give 
gnuplot> pr NaN
NaN

I have googled NaN for the MinGW, I have not obtained good information yet.
So I have written the test code the below

**************************************
#include <stdio.h>
#include <math.h>


int main(void){
    double dbl;
	unsigned long uldbl[2];

    printf("test 0.0/0.0\n");
    dbl = 0.0/0.0;
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test 0xffffffff 0x7fffffff \n");
    uldbl[0]=0xffffffff; uldbl[1]= 0x7fffffff;
    dbl = *( double* )uldbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test atof(\"NaN\") \n");
    dbl = atof("NaN");
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test atof(\"-1.#IND00\") \n");
    dbl = atof("-1.#IND00");
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test atof(\"1.#QNAN0\") \n");
    dbl = atof("1.#QNAN0");
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test 0 \n");
    dbl = 0;
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    return 0;
}
*************************
The results are

$ ./nan
test 0.0/0.0
-1.#IND00
isnan = 1
0 fff80000

test 0xffffffff 0x7fffffff
1.#QNAN0
isnan = 1
ffffffff 7fffffff

test atof("NaN")
2293504.000000
isnan = 0
0 41417f80

test atof("-1.#IND00")
2293504.000000
isnan = 0
0 41417f80

test atof("1.#QNAN0")
2293504.000000
isnan = 0
0 41417f80

test 0
0.000000
isnan = 0
0 0

#******************

>From above it seems to be

	unsigned long lnan[2]={0xffffffff, 0x7fffffff};
    return *( double* )lnan;

is applicable as for the MSC and djgpp.

So I changed from
#if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) 
to
#if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) || defined (__MinGW32__)
but pr NaN gives 0.0.

This is the current situation.

Any suggestions?

Regards

Tatsuro

--------------------------------------
Learn more about breast cancer - Pink Ribbon Campaign 2010
http://yj.pn/JAy9L7

not_a_number for MinGW build (gcc-4.5.0)

[Tatsuro M. <tma...@ya...>]

Hello

For current windows binaries,
gnuplot> pr NaN
0.0

This is not correct.

For the cygwin and the djgpp (modified recently) give 
gnuplot> pr NaN
NaN

I have googled NaN for the MinGW, I have not obtained good information yet.
So I have written the test code the below

**************************************
#include <stdio.h>
#include <math.h>


int main(void){
    double dbl;
	unsigned long uldbl[2];

    printf("test 0.0/0.0\n");
    dbl = 0.0/0.0;
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test 0xffffffff 0x7fffffff \n");
    uldbl[0]=0xffffffff; uldbl[1]= 0x7fffffff;
    dbl = *( double* )uldbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test atof(\"NaN\") \n");
    dbl = atof("NaN");
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test atof(\"-1.#IND00\") \n");
    dbl = atof("-1.#IND00");
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test atof(\"1.#QNAN0\") \n");
    dbl = atof("1.#QNAN0");
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    printf("test 0 \n");
    dbl = 0;
    *( double* )uldbl = dbl;
    printf("%f \n",dbl);
    printf("isnan = %d \n",isnan(dbl));
    printf("%x %x\n", uldbl[0], uldbl[1]);
    printf("\n");

    return 0;
}
*************************
The results are

$ ./nan
test 0.0/0.0
-1.#IND00
isnan = 1
0 fff80000

test 0xffffffff 0x7fffffff
1.#QNAN0
isnan = 1
ffffffff 7fffffff

test atof("NaN")
2293504.000000
isnan = 0
0 41417f80

test atof("-1.#IND00")
2293504.000000
isnan = 0
0 41417f80

test atof("1.#QNAN0")
2293504.000000
isnan = 0
0 41417f80

test 0
0.000000
isnan = 0
0 0

#******************

>From above it seems to be

	unsigned long lnan[2]={0xffffffff, 0x7fffffff};
    return *( double* )lnan;

is applicable as for the MSC and djgpp.

So I changed from
#if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) 
to
#if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) || defined (__MinGW32__)
but pr NaN gives 0.0.

This is the current situation.

Any suggestions?

Regards

Tatsuro

--------------------------------------
Learn more about breast cancer - Pink Ribbon Campaign 2010
http://yj.pn/JAy9L7

Re: not_a_number for MinGW build (gcc-4.5.0)

[Allin C. <cot...@wf...>]

On Tue, 5 Oct 2010, Tatsuro MATSUOKA wrote:

> For current windows binaries,
> gnuplot> pr NaN
> 0.0
>
> This is not correct.

I can confirm that this is what I get running current CVS gnuplot
for Windows on wine (my own build, using cross-mingw on Linux).

Allin Cottrell

Re: not_a_number for MinGW build (gcc-4.5.0)

[Tatsuro M. <tma...@ya...>]

Hello

Thank you for your confirming the issue.
Your report reveals the issue genetic to the mingw platform.

Regards

Tatsuro


--- Allin Cottrell wrote:

> On Tue, 5 Oct 2010, Tatsuro MATSUOKA wrote:
> 
> > For current windows binaries,
> > gnuplot> pr NaN
> > 0.0
> >
> > This is not correct.
> 
> I can confirm that this is what I get running current CVS gnuplot
> for Windows on wine (my own build, using cross-mingw on Linux).
> 
> Allin Cottrell
> 


--------------------------------------
Learn more about breast cancer - Pink Ribbon Campaign 2010
http://yj.pn/JAy9L7

Re: not_a_number for MinGW build (gcc-4.5.0)

[Tatsuro M. <tma...@ya...>]

Hello

Ooops!

> So I changed from
> #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) 
> to
> #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) || defined (__MinGW32__)
> but pr NaN gives 0.0.

I have just make a mistake in define MinGW.

The macro 'defined (__MinGW32__)' should be 'defined (__MINGW32__)'.

I have attached the patch. This makes 'pr NaN gives NaN.'.

Regards

Tatsuro
 
--- Tatsuro MATSUOKA wrote:

> Hello
> 
> For current windows binaries,
> gnuplot> pr NaN
> 0.0
> 
> This is not correct.
> 
> For the cygwin and the djgpp (modified recently) give 
> gnuplot> pr NaN
> NaN
> 
> I have googled NaN for the MinGW, I have not obtained good information yet.
> So I have written the test code the below
> 
> **************************************
> #include <stdio.h>
> #include <math.h>
> 
> 
> int main(void){
>     double dbl;
> 	unsigned long uldbl[2];
> 
>     printf("test 0.0/0.0\n");
>     dbl = 0.0/0.0;
>     *( double* )uldbl = dbl;
>     printf("%f \n",dbl);
>     printf("isnan = %d \n",isnan(dbl));
>     printf("%x %x\n", uldbl[0], uldbl[1]);
>     printf("\n");
> 
>     printf("test 0xffffffff 0x7fffffff \n");
>     uldbl[0]=0xffffffff; uldbl[1]= 0x7fffffff;
>     dbl = *( double* )uldbl;
>     printf("%f \n",dbl);
>     printf("isnan = %d \n",isnan(dbl));
>     printf("%x %x\n", uldbl[0], uldbl[1]);
>     printf("\n");
> 
>     printf("test atof(\"NaN\") \n");
>     dbl = atof("NaN");
>     *( double* )uldbl = dbl;
>     printf("%f \n",dbl);
>     printf("isnan = %d \n",isnan(dbl));
>     printf("%x %x\n", uldbl[0], uldbl[1]);
>     printf("\n");
> 
>     printf("test atof(\"-1.#IND00\") \n");
>     dbl = atof("-1.#IND00");
>     *( double* )uldbl = dbl;
>     printf("%f \n",dbl);
>     printf("isnan = %d \n",isnan(dbl));
>     printf("%x %x\n", uldbl[0], uldbl[1]);
>     printf("\n");
> 
>     printf("test atof(\"1.#QNAN0\") \n");
>     dbl = atof("1.#QNAN0");
>     *( double* )uldbl = dbl;
>     printf("%f \n",dbl);
>     printf("isnan = %d \n",isnan(dbl));
>     printf("%x %x\n", uldbl[0], uldbl[1]);
>     printf("\n");
> 
>     printf("test 0 \n");
>     dbl = 0;
>     *( double* )uldbl = dbl;
>     printf("%f \n",dbl);
>     printf("isnan = %d \n",isnan(dbl));
>     printf("%x %x\n", uldbl[0], uldbl[1]);
>     printf("\n");
> 
>     return 0;
> }
> *************************
> The results are
> 
> $ ./nan
> test 0.0/0.0
> -1.#IND00
> isnan = 1
> 0 fff80000
> 
> test 0xffffffff 0x7fffffff
> 1.#QNAN0
> isnan = 1
> ffffffff 7fffffff
> 
> test atof("NaN")
> 2293504.000000
> isnan = 0
> 0 41417f80
> 
> test atof("-1.#IND00")
> 2293504.000000
> isnan = 0
> 0 41417f80
> 
> test atof("1.#QNAN0")
> 2293504.000000
> isnan = 0
> 0 41417f80
> 
> test 0
> 0.000000
> isnan = 0
> 0 0
> 
> #******************
> 
> >From above it seems to be
> 
> 	unsigned long lnan[2]={0xffffffff, 0x7fffffff};
>     return *( double* )lnan;
> 
> is applicable as for the MSC and djgpp.
> 
> So I changed from
> #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) 
> to
> #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) || defined (__MinGW32__)
> but pr NaN gives 0.0.
> 
> This is the current situation.
> 
> Any suggestions?
> 
> Regards
> 
> Tatsuro
> 
> --------------------------------------
> Learn more about breast cancer - Pink Ribbon Campaign 2010
> http://yj.pn/JAy9L7
> 
> ------------------------------------------------------------------------------
> Beautiful is writing same markup. Internet Explorer 9 supports
> standards for HTML5, CSS3, SVG 1.1,  ECMAScript5, and DOM L2 & L3.
> Spend less time writing and  rewriting code and more time creating great
> experiences on the web. Be a part of the beta today.
> http://p.sf.net/sfu/beautyoftheweb
> _______________________________________________
> gnuplot-beta mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-beta
> 

--------------------------------------
Learn more about breast cancer - Pink Ribbon Campaign 2010
http://yj.pn/JAy9L7

Re: not_a_number for MinGW build (gcc-4.5.0)

[sfeam (E. Merritt) <eam...@gm...>]

On Sunday, October 10, 2010, Tatsuro MATSUOKA wrote:
> 
> > So I changed from
> > #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) 
> > to
> > #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) || defined (__MinGW32__)
> > but pr NaN gives 0.0.
> 
> I have just make a mistake in define MinGW.
> 
> The macro 'defined (__MinGW32__)' should be 'defined (__MINGW32__)'.
> 
> I have attached the patch. This makes 'pr NaN gives NaN.'.

Added to CVS.
Thanks,

	Ethan

Re: not_a_number for MinGW build (gcc-4.5.0)

[Tatsuro M. <tma...@ya...>]

Hello

I have confirmed the fix of cvs source and also confirmed that binaries built with the fixed source
fixes the problem.

Thanks!!

Regards
 

--- "sfeam (Ethan Merritt)" wrote:

> On Sunday, October 10, 2010, Tatsuro MATSUOKA wrote:
> > 
> > > So I changed from
> > > #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) 
> > > to
> > > #if defined (__MSC__) || defined (DJGPP) || defined(__DJGPP__) || defined (__MinGW32__)
> > > but pr NaN gives 0.0.
> > 
> > I have just make a mistake in define MinGW.
> > 
> > The macro 'defined (__MinGW32__)' should be 'defined (__MINGW32__)'.
> > 
> > I have attached the patch. This makes 'pr NaN gives NaN.'.
> 
> Added to CVS.
> Thanks,
> 
> 	Ethan
> 


--------------------------------------
Learn more about breast cancer - Pink Ribbon Campaign 2010
http://yj.pn/JAy9L7