Re: [Gm2] complex types

[Andreas Fischlin]

Arn't C library conversion routines already longreal? MathLib0 definition looks similar to this (within RAMSES/RASS):

DEFINITION FOR C MODULE CMath; 

  PROCEDURE sqrt(x : LONGREAL) : LONGREAL;
  PROCEDURE sin (x : LONGREAL) : LONGREAL;
  PROCEDURE cos (x : LONGREAL) : LONGREAL;
  PROCEDURE exp (x : LONGREAL) : LONGREAL;
  PROCEDURE log (x : LONGREAL) : LONGREAL;
  PROCEDURE atan(x : LONGREAL) : LONGREAL;

END CMath.

Similarly I expect conversion routines to be also double precision reals, i.e. LONGREAL.

Regards,
Andreas
 


Gaius Mulley wrote:

Michael Lambert <address@hidden> writes:

  

On 14 Dec 2008, at 13:16, Andreas Fischlin wrote:

    

I opt for using the C library.

Regards,
Andreas
      

You're right.  Some of us haven't tracked C closely enough to know
that complex functions are in C99.

Michael
    

Hi Michael and Andreas,

thankfully all the C99 intrinsic functions are also declared in
gcc-4.1.2/gcc/Builtins.def [*] along with the C intrinsic functions,
some of which are exposed in gcc-4.1.2/gcc/gm2/gm2-libs/Builtins.def
(the gm2 definition module which defines memcpy, sinl, sinf, sin etc).
I'd imagine that the primitives in C99 will be sufficient to implement
the ISO complex libraries, if so then the experience should be rather
similar to implementing MathLib0.  (As an aside, also on of the list
of things to do are the implementation of LongConv and RealConv).

regards,
Gaius


[*] gcc-4.1.2/gcc/Builtins.def is not a M2 definition module - but a
component of a C file included and macro-processed into many different
types, function prototypes etc.
  

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