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88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* Copyright (C) 1995,1996,1997,1998,2000,2001,2002,2003,2004, 2005, 2006, 2009, 2010, 2013, 2014, 2018 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "libguile/uniform.h"
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const size_t scm_i_array_element_type_sizes[SCM_ARRAY_ELEMENT_TYPE_LAST + 1] = {
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0,
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0,
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1,
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8,
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8, 8,
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16, 16,
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32, 32,
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64, 64,
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32, 64,
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64, 128
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};
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size_t
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scm_array_handle_uniform_element_size (scm_t_array_handle *h)
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{
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size_t ret = scm_i_array_element_type_sizes[h->element_type];
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if (ret && ret % 8 == 0)
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return ret / 8;
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else if (ret)
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scm_wrong_type_arg_msg (NULL, 0, h->array, "byte-aligned uniform array");
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else
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scm_wrong_type_arg_msg (NULL, 0, h->array, "uniform array");
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}
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size_t
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scm_array_handle_uniform_element_bit_size (scm_t_array_handle *h)
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{
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size_t ret = scm_i_array_element_type_sizes[h->element_type];
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if (ret)
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return ret;
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else
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scm_wrong_type_arg_msg (NULL, 0, h->array, "uniform array");
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}
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const void *
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scm_array_handle_uniform_elements (scm_t_array_handle *h)
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{
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size_t esize;
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const scm_t_uint8 *ret;
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esize = scm_array_handle_uniform_element_size (h);
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ret = ((const scm_t_uint8 *) h->elements) + h->base * esize;
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return ret;
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}
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void *
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scm_array_handle_uniform_writable_elements (scm_t_array_handle *h)
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{
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if (h->writable_elements != h->elements)
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scm_wrong_type_arg_msg (NULL, 0, h->array, "mutable array");
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return (void *) scm_array_handle_uniform_elements (h);
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}
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void
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scm_init_uniform (void)
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{
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#include "libguile/uniform.x"
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}
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