Tor 0.4.9.0-alpha-dev
muldiv.h
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1/* Copyright (c) 2003-2004, Roger Dingledine
2 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
3 * Copyright (c) 2007-2021, The Tor Project, Inc. */
4/* See LICENSE for licensing information */
5
6/**
7 * \file muldiv.h
8 *
9 * \brief Header for muldiv.c
10 **/
11
12#ifndef TOR_INTMATH_MULDIV_H
13#define TOR_INTMATH_MULDIV_H
14
15#include "lib/cc/torint.h"
16
17unsigned round_to_next_multiple_of(unsigned number, unsigned divisor);
18uint32_t round_uint32_to_next_multiple_of(uint32_t number, uint32_t divisor);
19uint64_t round_uint64_to_next_multiple_of(uint64_t number, uint64_t divisor);
20
21uint64_t tor_mul_u64_nowrap(uint64_t a, uint64_t b);
22
23void simplify_fraction64(uint64_t *numer, uint64_t *denom);
24
25/* Compute the CEIL of <b>a</b> divided by <b>b</b>, for nonnegative <b>a</b>
26 * and positive <b>b</b>. Works on integer types only. Not defined if a+(b-1)
27 * can overflow. */
28#define CEIL_DIV(a,b) (((a)+((b)-1))/(b))
29
30#endif /* !defined(TOR_INTMATH_MULDIV_H) */
uint64_t tor_mul_u64_nowrap(uint64_t a, uint64_t b)
Definition: muldiv.c:75
uint32_t round_uint32_to_next_multiple_of(uint32_t number, uint32_t divisor)
Definition: muldiv.c:35
unsigned round_to_next_multiple_of(unsigned number, unsigned divisor)
Definition: muldiv.c:21
uint64_t round_uint64_to_next_multiple_of(uint64_t number, uint64_t divisor)
Definition: muldiv.c:50
Integer definitions used throughout Tor.