This programm

import venus.all;

int main (char [][] args)
{
    float y=3.14;
    PrintLine("y=",y);
    cfloat cy=3.14 + 10i;
    PrintLine("cy.re=",cy.re);
    PrintLine("cy.im=",cy.im);
    PrintLine("cy=",cy);
    ifloat ix=1.5i;
    PrintLine("ix=",ix);
    cdouble z=cy*ix;
    PrintLine("z=",z);
    z=sqrt(z);
    PrintLine("sqrt(z)=",z);
    z= -1;
    PrintLine("z=",z);
    z=sqrt(z);
    PrintLine("sqrt(z)=",z);
    return 0;
}

Will produce the following output:

y=3.140000                           ok, only testing
cy.re=3.140000                       ok
cy.im=10.000000                      ok
cy=3.140000 + 10.000000i             ok, testing PrintLine for cfloat
ix=1.500000i                         ok, ifloat assignment
z=-15.000000 + 4.710000i             ok, multiplication
sqrt(z)=2.170253 + 0.000000i         nok sqrt
z=-1.000000 + 0.000000i              ok, cdouble assignment
sqrt(z)=-nan + 0.000000i             nok sqrt

The sqrt values calculated are in error. I don't no why sqrt is called at all. It seams that Phobos doesn't define a complex version for sqrt. The stdio and stdlib modules are imported, but they shouldn't match.

--
Helmut Leitner    leitner@hls.via.at Graz, Austria   www.hls-software.com

That's true, the various math functions for complex arguments haven't been implemented yet. -Walter

"Helmut Leitner" <helmut.leitner@chello.at> wrote in message news:3EA4439C.135F6C1C@chello.at...
> This programm
>
> import venus.all;
>
> int main (char [][] args)
> {
>     float y=3.14;
>     PrintLine("y=",y);
>     cfloat cy=3.14 + 10i;
>     PrintLine("cy.re=",cy.re);
>     PrintLine("cy.im=",cy.im);
>     PrintLine("cy=",cy);
>     ifloat ix=1.5i;
>     PrintLine("ix=",ix);
>     cdouble z=cy*ix;
>     PrintLine("z=",z);
>     z=sqrt(z);
>     PrintLine("sqrt(z)=",z);
>     z= -1;
>     PrintLine("z=",z);
>     z=sqrt(z);
>     PrintLine("sqrt(z)=",z);
>     return 0;
> }
>
> Will produce the following output:
>
> y=3.140000                           ok, only testing
> cy.re=3.140000                       ok
> cy.im=10.000000                      ok
> cy=3.140000 + 10.000000i             ok, testing PrintLine for cfloat
> ix=1.500000i                         ok, ifloat assignment
> z=-15.000000 + 4.710000i             ok, multiplication
> sqrt(z)=2.170253 + 0.000000i         nok sqrt
> z=-1.000000 + 0.000000i              ok, cdouble assignment
> sqrt(z)=-nan + 0.000000i             nok sqrt
>
> The sqrt values calculated are in error. I don't no why sqrt is called at
all.
> It seams that Phobos doesn't define a complex version for sqrt. The stdio
and
> stdlib modules are imported, but they shouldn't match.
>
> --
> Helmut Leitner    leitner@hls.via.at
> Graz, Austria   www.hls-software.com

Walter wrote:
> 
> That's true, the various math functions for complex arguments haven't been implemented yet. -Walter
> 

No problem. But why do the calls match?

-- 
Helmut Leitner    leitner@hls.via.at
Graz, Austria   www.hls-software.com

"Helmut Leitner" <leitner@hls.via.at> wrote in message news:3EA56AF0.437F70A@hls.via.at...
> Walter wrote:
> > That's true, the various math functions for complex arguments haven't
been
> > implemented yet. -Walter
> No problem. But why do the calls match?

Both are a conversion.

Walter wrote:
> "Helmut Leitner" <leitner@hls.via.at> wrote in message
> news:3EA56AF0.437F70A@hls.via.at...
> 
>>Walter wrote:
>>
>>>That's true, the various math functions for complex arguments haven't
> 
> been
> 
>>>implemented yet. -Walter
>>
>>No problem. But why do the calls match?
> 
> 
> Both are a conversion.
> 
> 

It may be worth the hassle to disallow floating points to be converted to integers, in that case.  round/floor/truncate functions could fill the gap. (make it/them intrinsic?)

Walter wrote:
> 
> "Helmut Leitner" <leitner@hls.via.at> wrote in message news:3EA56AF0.437F70A@hls.via.at...
> > Walter wrote:
> > > That's true, the various math functions for complex arguments haven't
> been
> > > implemented yet. -Walter
> > No problem. But why do the calls match?
> 
> Both are a conversion.

I don't understand that. I can't find anything about conversions in the
language specs that would back that. Anyway nothing that would make
a complex number match to the only

    //intrinsic.d
    real sqrt(real);

I can find. Even if there were something it would be just plain wrong.

--
Helmut Leitner    leitner@hls.via.at Graz, Austria   www.hls-software.com