From 7b09710392d35fb55b52031d447a542d99fc6b4b Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Tue, 19 Aug 2014 17:10:03 -0400 Subject: Modularize the libdimension codebase. --- libdimension/map.c | 125 ----------------------------------------------------- 1 file changed, 125 deletions(-) delete mode 100644 libdimension/map.c (limited to 'libdimension/map.c') diff --git a/libdimension/map.c b/libdimension/map.c deleted file mode 100644 index f5454b1..0000000 --- a/libdimension/map.c +++ /dev/null @@ -1,125 +0,0 @@ -/************************************************************************* - * Copyright (C) 2010-2014 Tavian Barnes * - * * - * This file is part of The Dimension Library. * - * * - * The Dimension Library is free software; you can redistribute it and/ * - * or modify it under the terms of the GNU Lesser General Public License * - * as published by the Free Software Foundation; either version 3 of the * - * License, or (at your option) any later version. * - * * - * The Dimension Library is distributed in the hope that it will be * - * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * - * Lesser General Public License for more details. * - * * - * You should have received a copy of the GNU Lesser General Public * - * License along with this program. If not, see * - * . * - *************************************************************************/ - -/** - * @file - * Generic maps. - */ - -#include "dimension-internal.h" - -/// dmnsn_map definition. -struct dmnsn_map { - size_t obj_size; ///< @internal The size of the mapped objects. - dmnsn_array *array; ///< @internal The map entries. -}; - -/// An [index, object] pair. -typedef struct dmnsn_map_entry { - double n; - char object[]; -} dmnsn_map_entry; - -dmnsn_map * -dmnsn_new_map(dmnsn_pool *pool, size_t size) -{ - dmnsn_map *map = DMNSN_PALLOC(pool, dmnsn_map); - map->obj_size = size; - map->array = dmnsn_palloc_array(pool, sizeof(dmnsn_map_entry) + size); - return map; -} - -void -dmnsn_map_add_entry(dmnsn_map *map, double n, const void *obj) -{ - dmnsn_map_entry *entry; - DMNSN_ALLOCA(entry, sizeof(dmnsn_map_entry) + map->obj_size); - - entry->n = n; - memcpy(entry->object, obj, map->obj_size); - - // Sorted insertion - size_t i; - for (i = dmnsn_array_size(map->array); i-- > 0;) { - dmnsn_map_entry *other = dmnsn_array_at(map->array, i); - if (other->n <= n) { - break; - } - } - - dmnsn_array_insert(map->array, i + 1, entry); -} - -size_t -dmnsn_map_size(const dmnsn_map *map) -{ - return dmnsn_array_size(map->array); -} - -void -dmnsn_map_evaluate(const dmnsn_map *map, double n, - double *val, void *obj1, void *obj2) -{ - dmnsn_assert(dmnsn_array_size(map->array) > 0, - "Attempt to evaluate empty map."); - - const dmnsn_map_entry *entry = dmnsn_array_first(map->array); - - double n1, n2 = 0.0; - const void *o1, *o2 = entry->object; - - if (n < n2) { - *val = 0.0; - memcpy(obj1, o2, map->obj_size); - memcpy(obj2, o2, map->obj_size); - return; - } - - ptrdiff_t skip = sizeof(dmnsn_map_entry) + map->obj_size; - for (const dmnsn_map_entry *last = dmnsn_array_last(map->array); - entry <= last; - entry = (const dmnsn_map_entry *)((const char *)entry + skip)) { - n1 = n2; - o1 = o2; - - n2 = entry->n; - o2 = entry->object; - - if (n < n2) { - *val = (n - n1)/(n2 - n1); - memcpy(obj1, o1, map->obj_size); - memcpy(obj2, o2, map->obj_size); - return; - } - } - - *val = 1.0; - memcpy(obj1, o2, map->obj_size); - memcpy(obj2, o2, map->obj_size); -} - -void -dmnsn_map_apply(dmnsn_map *map, dmnsn_callback_fn *callback) -{ - for (size_t i = 0; i < dmnsn_array_size(map->array); ++i) { - dmnsn_map_entry *entry = dmnsn_array_at(map->array, i); - callback(entry->object); - } -} -- cgit v1.2.3