Tor  0.4.4.0-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) 2007-2020, 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
17 unsigned round_to_next_multiple_of(unsigned number, unsigned divisor);
18 uint32_t round_uint32_to_next_multiple_of(uint32_t number, uint32_t divisor);
19 uint64_t round_uint64_to_next_multiple_of(uint64_t number, uint64_t divisor);
20
21 uint64_t tor_mul_u64_nowrap(uint64_t a, uint64_t b);
22
23 void 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) */
unsigned round_to_next_multiple_of(unsigned number, unsigned divisor)
Definition: muldiv.c:21
Integer definitions used throughout Tor.
uint32_t round_uint32_to_next_multiple_of(uint32_t number, uint32_t divisor)
Definition: muldiv.c:35
uint64_t round_uint64_to_next_multiple_of(uint64_t number, uint64_t divisor)
Definition: muldiv.c:50
uint64_t tor_mul_u64_nowrap(uint64_t a, uint64_t b)
Definition: muldiv.c:75