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