mirror of
https://github.com/Unidata/netcdf-c.git
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3ffe7be446
re: Discussion https://github.com/Unidata/netcdf-c/discussions/2214 The primary change is to support so-called "standard filters". A standard filter is one that is defined by the following netcdf-c API: ```` int nc_def_var_XXX(int ncid, int varid, size_t nparams, unsigned* params); int nc_inq_var_XXXX(int ncid, int varid, int* usefilterp, unsigned* params); ```` So for example, zstandard would be a standard filter by defining the functions *nc_def_var_zstandard* and *nc_inq_var_zstandard*. In order to define these functions, we need a new dispatch function: ```` int nc_inq_filter_avail(int ncid, unsigned filterid); ```` This function, combined with the existing filter API can be used to implement arbitrary standard filters using a simple code pattern. Note that I would have preferred that this function return a list of all available filters, but HDF5 does not support that functionality. So this PR implements the dispatch function and implements the following standard functions: + bzip2 + zstandard + blosc Specific test cases are also provided for HDF5 and NCZarr. Over time, other specific standard filters will be defined. ## Primary Changes * Add nc_inq_filter_avail() to netcdf-c API. * Add standard filter implementations to test use of *nc_inq_filter_avail*. * Bump the dispatch table version number and add to all the relevant dispatch tables (libsrc, libsrcp, etc). * Create a program to invoke nc_inq_filter_avail so that it is accessible to shell scripts. * Cleanup szip support to properly support szip when HDF5 is disabled. This involves detecting libsz separately from testing if HDF5 supports szip. * Integrate shuffle and fletcher32 into the existing filter API. This means that, for example, nc_def_var_fletcher32 is now a wrapper around nc_def_var_filter. * Extend the Codec defaulting to allow multiple default shared libraries. ## Misc. Changes * Modify configure.ac/CMakeLists.txt to look for the relevant libraries implementing standard filters. * Modify libnetcdf.settings to list available standard filters (including deflate and szip). * Add CMake test modules to locate libbz2 and libzstd. * Cleanup the HDF5 memory manager function use in the plugins. * remove unused file include//ncfilter.h * remove tests for the HDF5 memory operations e.g. H5allocate_memory. * Add flag to ncdump to force use of _Filter instead of _Deflate or _Shuffle or _Fletcher32. Used for testing.
688 lines
15 KiB
C
688 lines
15 KiB
C
/* Copyright 2018, UCAR/Unidata See netcdf/COPYRIGHT file for copying
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* and redistribution conditions.*/
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/**
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* @file
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* @internal This file contains functions that
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* can be used in dispatch tables to handle
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* such things as unimplemented functions.
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* As a rule, these functions will return NC_ENOTNC4.
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* In some cases, the function may succeed and set
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* appropriate output parameter values. These are indicated
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* by the NC_NOOP prefix to the function name.
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*
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* @author Ed Hartnett, Dennis Heimbigner
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*/
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#include "netcdf.h"
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#include "netcdf_filter.h"
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#include "netcdf_aux.h"
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#include "ncdispatch.h"
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#include "nc4internal.h"
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/**
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* @internal Not implemented in some dispatch tables
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param quantize_mode Ignored.
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* @param nsd Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_var_quantize(int ncid, int varid, int quantize_mode, int nsd)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented in some dispatch tables
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param quantize_modep Ignored.
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* @param nsdp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_inq_var_quantize(int ncid, int varid, int *quantize_modep,
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int *nsdp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented in some dispatch tables
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param id Ignored.
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* @param nparams Ignored.
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* @param parms Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_var_filter(int ncid, int varid, unsigned int id, size_t nparams, const unsigned int* parms)
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{
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return NC_ENOTNC4;
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}
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int
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NC_NOTNC4_inq_var_filter_ids(int ncid, int varid, size_t* nfilters, unsigned int* filterids)
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{
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return NC_ENOTNC4;
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}
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int
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NC_NOTNC4_inq_var_filter_info(int ncid, int varid, unsigned int id, size_t* nparams, unsigned int* params)
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{
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return NC_ENOTNC4;
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}
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int
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NC_NOOP_inq_var_filter_ids(int ncid, int varid, size_t* nfilters, unsigned int* filterids)
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{
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if(nfilters) *nfilters = 0;
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return NC_NOERR;
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}
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int
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NC_NOOP_inq_var_filter_info(int ncid, int varid, unsigned int id, size_t* nparams, unsigned int* params)
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{
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return NC_ENOFILTER;
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}
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int
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NC_NOOP_inq_filter_avail(int ncid, unsigned id)
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{
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NC_UNUSED(ncid);
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return NC_ENOFILTER;
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}
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/**
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* @internal Not allowed for classic model.
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*
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* @param parent_ncid Ignored.
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* @param name Ignored.
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* @param new_ncid Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_grp(int parent_ncid, const char *name, int *new_ncid)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param grpid Ignored.
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* @param name Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_rename_grp(int grpid, const char *name)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param size Ignored.
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* @param name Ignored.
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* @param typeidp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_compound(int ncid, size_t size, const char *name, nc_type *typeidp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param name Ignored.
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* @param offset Ignored.
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* @param field Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_insert_compound(int ncid, nc_type typeid1, const char *name, size_t offset,
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nc_type field_typeid)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param name Ignored.
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* @param offset Ignored.
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* @param field Ignored.
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* @param ndims Ignored.
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* @param dim Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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extern int
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NC_NOTNC4_insert_array_compound(int ncid, int typeid1, const char *name,
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size_t offset, nc_type field_typeid,
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int ndims, const int *dim_sizesp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param fieldid Ignored.
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* @param name Ignored.
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* @param offsetp Ignored.
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* @param field Ignored.
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* @param ndimsp Ignored.
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* @param dim Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_inq_compound_field(int ncid, nc_type typeid1, int fieldid, char *name,
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size_t *offsetp, nc_type *field_typeidp, int *ndimsp,
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int *dim_sizesp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param name Ignored.
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* @param fieldidp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_inq_compound_fieldindex(int ncid, nc_type typeid1, const char *name, int *fieldidp)
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{
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return NC_ENOTNC4;
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}
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/* Opaque type. */
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param datum Ignored.
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* @param name Ignored.
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* @param typeidp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_opaque(int ncid, size_t datum_size, const char *name,
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nc_type *typeidp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param name Ignored.
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* @param base_typeid Ignored.
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* @param typeidp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_vlen(int ncid, const char *name, nc_type base_typeid,
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nc_type *typeidp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param base_typeid Ignored.
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* @param name Ignored.
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* @param typeidp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_enum(int ncid, nc_type base_typeid, const char *name,
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nc_type *typeidp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param xtype Ignored.
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* @param value Ignored.
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* @param identifier Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_inq_enum_ident(int ncid, nc_type xtype, long long value, char *identifier)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param idx Ignored.
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* @param identifier Ignored.
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* @param value Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_inq_enum_member(int ncid, nc_type typeid1, int idx, char *identifier,
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void *value)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param identifier Ignored.
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* @param value Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_insert_enum(int ncid, nc_type typeid1, const char *identifier,
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const void *value)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param vlen_element Ignored.
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* @param len Ignored.
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* @param data Ignored.
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*
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* @return ::NC_NOERR No error.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_put_vlen_element(int ncid, int typeid1, void *vlen_element,
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size_t len, const void *data)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param typeid1 Ignored.
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* @param vlen_element Ignored.
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* @param len Ignored.
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* @param data Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_get_vlen_element(int ncid, int typeid1, const void *vlen_element,
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size_t *len, void *data)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param size Ignored.
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* @param nelems Ignored.
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* @param preemption Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_set_var_chunk_cache(int ncid, int varid, size_t size, size_t nelems,
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float preemption)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param sizep Ignored.
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* @param nelemsp Ignored.
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* @param preemptionp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_get_var_chunk_cache(int ncid, int varid, size_t *sizep,
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size_t *nelemsp, float *preemptionp)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param shuffle Ignored.
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* @param deflate Ignored.
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* @param deflate_level Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett, Dennis Heimbigner
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*/
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int
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NC_NOTNC4_def_var_deflate(int ncid, int varid, int shuffle, int deflate,
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int deflate_level)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param fletcher32 Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett, Dennis Heimbigner
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*/
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int
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NC_NOTNC4_def_var_fletcher32(int ncid, int varid, int fletcher32)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param contiguous Ignored.
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* @param chunksizesp Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett, Dennis Heimbigner
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*/
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int
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NC_NOTNC4_def_var_chunking(int ncid, int varid, int contiguous, const size_t *chunksizesp)
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{
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return NC_EPERM;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param endianness Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett
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*/
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int
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NC_NOTNC4_def_var_endian(int ncid, int varid, int endianness)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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* @param ncid Ignored.
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* @param varid Ignored.
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* @param par_access Ignored.
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*
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* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
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* @author Ed Hartnett, Dennis Heimbigner
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*/
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int
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NC_NOTNC4_var_par_access(int ncid, int varid, int par_access)
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{
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return NC_ENOTNC4;
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}
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/**
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* @internal Not implemented for a dispatch table.
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*
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|
* @param ncid Ignored.
|
|
* @param name Ignored.
|
|
* @param grp_ncid Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_ncid(int ncid, const char *name, int *grp_ncid)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param numgrps Ignored.
|
|
* @param ncids Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_grps(int ncid, int *numgrps, int *ncids)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param name Ignored.
|
|
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_grpname(int ncid, char *name)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param lenp Ignored.
|
|
* @param full_name Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_grpname_full(int ncid, size_t *lenp, char *full_name)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param parent_ncid Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_grp_parent(int ncid, int *parent_ncid)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param full_name Ignored.
|
|
* @param grp_ncid Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_grp_full_ncid(int ncid, const char *full_name, int *grp_ncid)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param nvars Ignored.
|
|
* @param varids Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_varids(int ncid, int *nvars, int *varids)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param ndims Ignored.
|
|
* @param dimids Ignored.
|
|
* @param include_parents Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_dimids(int ncid, int *ndims, int *dimids, int include_parents)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param ntypes Ignored.
|
|
* @param typeids Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_typeids(int ncid, int *ntypes, int *typeids)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Not implemented for a dispatch table.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param typeid1 Ignored.
|
|
* @param name Ignored.
|
|
* @param size Ignored.
|
|
* @param base_nc_typep Ignored.
|
|
* @param nfieldsp Ignored.
|
|
* @param classp Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_user_type(int ncid, nc_type typeid1, char *name, size_t *size,
|
|
nc_type *base_nc_typep, size_t *nfieldsp, int *classp)
|
|
{
|
|
return NC_ENOTNC4;
|
|
}
|
|
|
|
/**
|
|
* @internal Get the id of a type from the name.
|
|
*
|
|
* @param ncid Ignored.
|
|
* @param name Ignored.
|
|
* @param typeidp Ignored.
|
|
*
|
|
* @return ::NC_ENOTNC4 Not implemented for a dispatch table.
|
|
* @author Ed Hartnett
|
|
*/
|
|
int
|
|
NC_NOTNC4_inq_typeid(int ncid, const char *name, nc_type *typeidp)
|
|
{
|
|
/* Note that this should actually work for atomic types */
|
|
return NC_ENOTNC4;
|
|
}
|