kc3-lang/kc3/libc3/array.c

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• Hash : 5315b806
  Author : Thomas de Grivel
  Date : 2023-04-01T01:39:29
  

  zero dimension

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• libc3/array.c

• /* c3
   * Copyright 2022,2023 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  #include <assert.h>
  #include <stdlib.h>
  #include <string.h>
  #include <err.h>
  #include "array.h"
  
  void array_clean (s_array *a)
  {
    assert(a);
    free(a->sizes);
    free(a->data);
  }
  
  s_array * array_init (s_array *a, uw dimension, uw *sizes)
  {
    uw i = 0;
    uw sizeof_sizes;
    assert(a);
    assert(dimension);
    if (! dimension) {
      errx(1, "zero dimension");
      return NULL;
    }
    a->dimension = dimension;
    sizeof_sizes = dimension * sizeof(uw *);
    a->sizes = malloc(sizeof_sizes);
    memcpy(a->sizes, sizes, sizeof_sizes);
    a->size = 1;
    while (i < dimension)
      a->size *= a->sizes[i];
    a->data = malloc(a->size);
    return a;
  }
  
  void * array_data (s_array *a, uw *address)
  {
    uw i = 0;
    uw offset = 0;
    uw size = 1;
    assert(a);
    assert(address);
    while (i < a->dimension) {
      size *= a->sizes[i];
      offset += size * address[i];
    }
    return (s8 *) a->data + offset;
  }
  

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