mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-03 08:01:25 +08:00
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/*********************************************************************
|
|
* Copyright 2018, University Corporation for Atmospheric Research
|
|
* See netcdf/README file for copying and redistribution conditions.
|
|
* "$Id $"
|
|
*********************************************************************/
|
|
|
|
#ifndef _NC_ITER_H
|
|
#define _NC_ITER_H
|
|
|
|
#include <netcdf.h>
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* The opaque structure to hold per-variable state of iteration
|
|
*/
|
|
typedef struct {
|
|
int first; /* false after associated next function invoked */
|
|
int right_dim; /* rightmost dimension for start of variable pieces */
|
|
size_t rows; /* how many subpiece rows in bufsiz */
|
|
size_t numrows; /* how many row pieces in right_dim dimension */
|
|
size_t cur; /* current "row" in loop over row pieces */
|
|
size_t leftover; /* how many rows left over after partitioning
|
|
* bufsiz into subpiece blocks */
|
|
int more; /* whether there is more data still to get */
|
|
size_t to_get; /* number of values to get on this access */
|
|
int rank; /* number of dimensions */
|
|
size_t inc; /* increment for right_dim element of start vector */
|
|
size_t dimsizes[NC_MAX_VAR_DIMS];
|
|
} nciter_t;
|
|
|
|
/*
|
|
* The Interface
|
|
*/
|
|
|
|
/* Get iterator for a variable. */
|
|
extern int
|
|
nc_get_iter(Symbol*, size_t bufsize, nciter_t *iterp);
|
|
|
|
/* Iterate over blocks of variable values, using start and count
|
|
* vectors. Returns number of values to access (product of counts),
|
|
* or 0 if done. */
|
|
extern size_t
|
|
nc_next_iter(nciter_t *iterp, size_t *start, size_t *count);
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif /* _NC_ITER_H */
|