139 lines
4.5 KiB
C
139 lines
4.5 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Module Info: This module contains the functionality for fixed-point (i.e.
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* integer) datatypes in the H5T interface.
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*/
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#include "H5Tmodule.h" /* This source code file is part of the H5T module */
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#include "H5private.h" /*generic functions */
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#include "H5Eprivate.h" /*error handling */
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#include "H5Iprivate.h" /*ID functions */
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#include "H5Tpkg.h" /*data-type functions */
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/*-------------------------------------------------------------------------
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* Function: H5Tget_sign
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*
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* Purpose: Retrieves the sign type for an integer type.
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*
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* Return: Success: The sign type.
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*
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* Failure: H5T_SGN_ERROR (Negative)
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*
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* Programmer: Robb Matzke
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* Wednesday, January 7, 1998
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*
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*-------------------------------------------------------------------------
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*/
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H5T_sign_t
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H5Tget_sign(hid_t type_id)
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{
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H5T_t * dt = NULL;
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H5T_sign_t ret_value;
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FUNC_ENTER_API(H5T_SGN_ERROR)
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H5TRACE1("Ts", "i", type_id);
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/* Check args */
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if (NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
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HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, H5T_SGN_ERROR, "not an integer datatype")
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ret_value = H5T_get_sign(dt);
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done:
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FUNC_LEAVE_API(ret_value)
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}
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/*-------------------------------------------------------------------------
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* Function: H5T_get_sign
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*
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* Purpose: Private function for H5Tget_sign. Retrieves the sign type
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* for an integer type.
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*
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* Return: Success: The sign type.
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*
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* Failure: H5T_SGN_ERROR (Negative)
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*
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* Programmer: Raymond Lu
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* October 8, 2002
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*
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*-------------------------------------------------------------------------
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*/
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H5T_sign_t
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H5T_get_sign(H5T_t const *dt)
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{
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H5T_sign_t ret_value = H5T_SGN_ERROR; /* Return value */
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FUNC_ENTER_NOAPI(H5T_SGN_ERROR)
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HDassert(dt);
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/* Defer to parent */
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while (dt->shared->parent)
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dt = dt->shared->parent;
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/* Check args */
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if (H5T_INTEGER != dt->shared->type)
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HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, H5T_SGN_ERROR, "operation not defined for datatype class")
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/* Sign */
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ret_value = dt->shared->u.atomic.u.i.sign;
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done:
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FUNC_LEAVE_NOAPI(ret_value)
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}
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/*-------------------------------------------------------------------------
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* Function: H5Tset_sign
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*
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* Purpose: Sets the sign property for an integer.
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*
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* Return: Non-negative on success/Negative on failure
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*
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* Programmer: Robb Matzke
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* Wednesday, January 7, 1998
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*
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*-------------------------------------------------------------------------
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*/
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herr_t
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H5Tset_sign(hid_t type_id, H5T_sign_t sign)
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{
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H5T_t *dt = NULL;
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herr_t ret_value = SUCCEED; /* Return value */
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FUNC_ENTER_API(FAIL)
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H5TRACE2("e", "iTs", type_id, sign);
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/* Check args */
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if (NULL == (dt = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE)))
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HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an integer datatype")
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if (H5T_STATE_TRANSIENT != dt->shared->state)
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HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "datatype is read-only")
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if (sign < H5T_SGN_NONE || sign >= H5T_NSGN)
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HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "illegal sign type")
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if (H5T_ENUM == dt->shared->type && dt->shared->u.enumer.nmembs > 0)
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HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not allowed after members are defined")
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while (dt->shared->parent)
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dt = dt->shared->parent; /*defer to parent*/
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if (H5T_INTEGER != dt->shared->type)
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HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "operation not defined for datatype class")
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/* Commit */
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dt->shared->u.atomic.u.i.sign = sign;
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done:
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FUNC_LEAVE_API(ret_value)
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}
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