blob: e9681e00ddd4636f261894546689c7746803f148 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
// SPDX-License-Identifier: MIT
//
// sset.c - an all O(1) implementation of sparse sets as presented in:
// "An Efficient Representation for Sparse Sets"
// by Preston Briggs and Linda Torczon
//
// Copyright (C) 2017 - Luc Van Oostenryck
#include "sset.h"
#include "lib.h"
#include <stdlib.h>
struct sset *sset_init(unsigned int first, unsigned int last)
{
unsigned int size = last - first + 1;
struct sset *s = malloc(sizeof(*s) + size * 2 * sizeof(s->sets[0]));
s->size = size;
s->off = first;
s->nbr = 0;
return s;
}
void sset_free(struct sset *s)
{
free(s);
}
|
