+#define ston_dht_size(_HT) (ston_ht_size(_HT))
+#define ston_dht_rows(_HT) (ston_ht_rows(_HT))
+#define ston_dht_cols(_HT) (ston_ht_cols(_HT))
+#define ston_dht_keyrow(_HT,_KEY) (ston_ht_keyrow(_HT,_KEY))
+#define ston_dht_pagestart(_HT) ((void**)(((uint8_t*)(_HT)) + STON_DHT_HEADERSIZE))
+#define ston_dht_pagehead(_HT) ((_HT)->page_head)
+#define ston_dht_pagemax(_HT) ((void**)((uint8_t*)(_HT) + STON_DHT_SIZE - sizeof(void**)))
+#define ston_dht_start(_HT,_DEPTH) ((uint8_t*)*(ston_dht_pagestart(_HT) + _DEPTH))
+#define ston_dht32_start(_HT,_DEPTH) ((uint32_t*)ston_dht_start(_HT,_DEPTH))
+#define ston_dht32_end(_HT,_DEPTH) (ston_ht32_start(_HT,_DEPTH) + ston_ht_size(_HT))
+#define ston_dht32_size(_HT) (ston_dht_size(_HT) * sizeof(uint32_t))
+#define ston_dht32_pagepush(_HT) ((*(++((_HT)->page_head)) = (_HT)->ht_alloc(ston_dht32_size(_HT))))
+#define ston_dht32_pagepop(_HT) ((_HT)->ht_free((_HT)->page_head--))
+
+/* Creates a new bucketted hash table, provided a memory allocation function
+ that takes a single size_t bytes, a memory free function, a column count, and
+ a row count which determines the size of the buckets.
+*/
+STON_FUNC
+ston_dht ston_dht32_create
+( uint16_t ht_columns,
+ size_t ht_rows,
+ uint8_t ht_flags,
+ void* (*ht_alloc)(size_t),
+ void (*ht_free)(void*)
+)
+{ size_t ht_size = ht_rows * ht_columns * sizeof(uint32_t);
+ ston_dht ht = (ston_dht) ht_alloc(STON_DHT_SIZE);
+ if (ht != NULL)
+ { for (ht->ht_2pow = 0; ht_size; ht->ht_2pow++)
+ ht_size = ht_size >> 1;
+ ht->ht_columns = ht_columns;
+ ht->ht_flags = ht_flags;
+ ht->ht_alloc = ht_alloc;
+ ht->ht_free = ht_free;
+ ht->page_head = ston_dht_pagestart(ht);
+ if ((*(ht->page_head) = ht->ht_alloc(ston_dht_size(ht))) == NULL)
+ ht_free(ht);
+ }
+ return ht;
+}
+
+/* Returns a pointer to the row of data in the hashtable containing the provided
+ key, inserts if not found. Returns NULL on overflow.
+*/
+STON_FUNC
+uint32_t* ston_dht32_row
+( struct ston_dht_header_t* ht,
+ uint32_t key
+)
+{ uint16_t ht_cols = ston_dht_cols(ht);
+ size_t row_number = ston_dht_keyrow(ht,key);
+ uint32_t** page = (uint32_t**)ston_dht_pagestart(ht);
+ uint32_t** pagemax = (uint32_t**)ston_dht_pagemax(ht);
+ uint8_t loop_x = 0;
+ uint8_t loop_y = 0;
+ uint32_t* row,* row_end;
+ next_page:
+ row = *page + (row_number * ht_cols);
+ row_end = *page + (ston_dht_size(ht) - 1);
+ next_row:
+ if (row[0] != 0)
+ goto populated;
+ write_position:
+ row[0] = key;
+ return row;
+ populated:
+ if (row[0] == key)
+ goto write_position;
+ if (!loop_x)
+ { if (page < pagemax)
+ { if (page == (uint32_t**)ston_dht_pagehead(ht))
+ if (ston_dht32_pagepush(ht) == NULL)
+ { ston_dht32_free(ht);
+ return NULL;
+ }
+ ++page;
+ goto next_row;
+ }
+ loop_x = 1;
+ row_number = (row_number + 1) % ston_dht_rows(ht);
+ page = (uint32_t**)ston_dht_pagestart(ht);
+ goto next_row;
+ }
+ if (row < row_end)
+ { row += ht_cols;
+ goto next_row;
+ }
+ else if (!loop_y)
+ { loop_y = 1;
+ row = *page;
+ goto next_row;
+ }
+ if (page < pagemax)
+ { loop_y = 0;
+ page++;
+ goto next_page;
+ }
+ return NULL;
+}
+
+/* Inserts a value into a hashtable at the specified column, returning the
+ previous value */
+STON_FUNC
+uint32_t ston_dht32_insert
+( struct ston_dht_header_t* ht,
+ uint32_t key,
+ uint16_t column,
+ uint32_t value
+)
+{ uint32_t* value_location, old_value;
+ value_location = ston_dht32_entry(ht,key,column);
+ old_value = *value_location;
+ *value_location = value;
+ return old_value;
+}