64bit Integers
Clicked A Few Times
5:12:43 AM PST - Tue, Feb 13th 2018
Hi,

I just wanted to check something. I have compiled NWChem and linked to a 64bit blas library (ilp64) as
the doc say NEChem uses "64-bit integers (i.e. integer*8)".

Does this mean that it is only using 64-bit integers from FORTRAN?

If its using 64-bit integers in any of the C code, are they defined as long ?

I have had a poke around and from what I can see if the script that converts to 32 bit, it seems to only modify FORTRAN code.

--
jason

Forum Vet
11:19:15 AM PST - Tue, Feb 13th 2018
yes to all your questions
In the C interface to fortran we use the type Integer that is defined as long in the types2f2c.h header file

See
$NWCHEM_TOP/src/tools/install/types2f2c.h

$NWCHEM_TOP/src/util/util_memcpy.c

Clicked A Few Times
2:14:42 AM PST - Wed, Feb 14th 2018
Quote:Edoapra Feb 13th 6:19 pm
yes to all your questions
In the C interface to fortran we use the type Integer that is defined as long in the types2f2c.h header file

See
$NWCHEM_TOP/src/tools/install/types2f2c.h

$NWCHEM_TOP/src/util/util_memcpy.c


Great, thanks for the confirmation.


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