BibleTime
macros.h
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1/*********
2*
3* In the name of the Father, and of the Son, and of the Holy Spirit.
4*
5* This file is part of BibleTime's source code, https://bibletime.info/
6*
7* Copyright 1999-2025 by the BibleTime developers.
8* The BibleTime source code is licensed under the GNU General Public License
9* version 2.0.
10*
11**********/
12
13#pragma once
14
15/**
16 \file macros.h
17 \brief This file is for listing reusable macros used in the BibleTime source code.
18*/
19
20
21/**
22 \def LIKELY(c)
23 \brief Gives the compiler a hint that the given conditional is likely to
24 evaluate to true.
25
26 This helps GCC to generate code which is optimized in respect to branch
27 prediction.
28*/
29
30/**
31 \def UNLIKELY(c)
32 \brief Gives the compiler a hint that the given conditional is likely to
33 evaluate to false.
34
35 This helps GCC to generate code which is optimized in respect to branch
36 prediction.
37*/
38
39#ifdef __GNUC__
40 #define LIKELY(c) __builtin_expect(!!(c),true)
41 #define UNLIKELY(c) __builtin_expect(!!(c),false)
42#else
43 #define LIKELY(c) !!(c)
44 #define UNLIKELY(c) !!(c)
45#endif
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