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960717: netcdf on SGI/PC: problem with ncattput()

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  • Subject: 960717: netcdf on SGI/PC: problem with ncattput()
  • Date: Wed, 17 Jul 96 12:15:08 -0600
Christi,

>Date: Wed, 17 Jul 1996 11:30:20 -0600 (MDT) 
>From: Christi Forsythe <address@hidden>
>Organization: Sandia National Laboratory
>To: address@hidden
>Subject: netcdf on SGI/PC 
>Keywords: 199607171731.AA13487 

In the above message you wrote:

> The floating_point_word_size should be 4.  Also, the return value of
> ncattput is 2.  Is this a warning? 

No.  The value returned from ncattput() is meaningful only if it's -1
(which indicates an error).

> Is there something wrong with the way we are using the netcdf interface?

Yup.  See below.

> #include "netcdf.h"
> 
> /* EXODUS II version number */
> 
> /* ExodusII file version */
> #define EX_VERS 2.02 
> /* ExodusII access library version */
> #define EX_API_VERS 2.05 
> #define ATT_FLT_WORDSIZE "floating_point_word_size" 
> #define ATT_API_VERSION  "api_version"
> #define ATT_VERSION      "version"
> 
> main()
> {
>    int  comp_ws;
>    int  io_ws;
>    int  exoid;
>    long lio_ws;

The above variable (lio_ws) should be type `nclong' and not `long'.
An `nclong' is a `long' on 32-bit systems and an `int' on most 64-bit
systems.  Your program is writing out the high-order 32 bits of `lio_ws'
-- which are all zero.

Please let me know if this helps.

--------
Steve Emmerson   <address@hidden>