[petsc-users] how does the srand48/drand48 works in windows build PETSc-3.3?

[Satish Balay]

cygwin is required primarily for the build tools. But compilation is
done directly with MS compiler/s [so no cygwin.dll is used]

wrt rand stuff - cl supports PETSC_HAVE_RAND. For eg: you can check
all the flags that get set for MS compiler/[Comapq DVF] at:

ftp://ftp.mcs.anl.gov/pub/petsc/nightlylogs/build_arch-mswin_ps3.log

Satish

On Tue, 29 Jan 2013, Yonghui wrote:

> Dear PETSc users,
> 
>  
> 
> I am start to use PETSc-3.3 and trying to build a Cygwin free windows
> version (I just don't want to have Cygwin installed).
> 
> Thanks for the effort that the developers made for those macros
> (PETSC_HAVE__FINITE, PETSC_HAVE__ISNAN, etc).
> 
>  
> 
> Here is a question: how does srand48/drand48 works in windows? Can I replace
> them with other random number generator (that's the last option since I am
> not sure whether they will be used in other functions)? I don't see any
> equivalent definition in any headers in windows so far.
> 
> There is a windows build tutorial but need Cygwin installed. Does that mean
> I have to use srand48/drand48 provided by Cygwin (not sure but maybe)?
> 
>  
> 
> I am using MSVS 2010+intel compiler+mpich.
> 
>  
> 
> Any comment will be appreciated.
> 
>  
> 
> Thanks,
> 
> Yonghui
> 
>