mirror of
https://github.com/matrix-construct/construct
synced 2024-05-29 08:13:46 +02:00
124 lines
2.3 KiB
C++
124 lines
2.3 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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//
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// Portability Macros & Developer Tools
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//
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#pragma once
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#define HAVE_IRCD_PORTABLE_H
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//
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// For non-clang
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//
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#ifndef __is_identifier
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#define __is_identifier(x) 0
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#endif
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#ifndef __has_feature
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#define __has_feature(x) 0
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#endif
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#ifndef __has_cpp_attribute
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#define __has_cpp_attribute(x) 0
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#endif
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//
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// Common branch prediction macros
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//
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#if !defined(likely)
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#if __has_builtin(__builtin_expect)
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#define likely(x) __builtin_expect(!!(x), 1)
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#else
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#define likely(x) (x)
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#endif
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#endif
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#if !defined(unlikely)
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#if __has_builtin(__builtin_expect)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#else
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#define unlikely(x) (x)
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#endif
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#endif
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#if !defined(unpredictable)
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#if __has_builtin(__builtin_unpredictable)
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#define unpredictable(x) __builtin_unpredictable(!!(x), 0)
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#else
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#define unpredictable(x) (x)
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#endif
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#endif
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//
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// Assume
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//
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#if !defined(assume)
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#if __has_builtin(__builtin_assume)
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#define assume(x) assert(x); __builtin_assume(x);
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#else
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#define assume(x) assert(x);
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#endif
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#endif
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//
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// 128 bit integer support
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//
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#if defined(__cplusplus) && (!defined(HAVE_INT128_T) || !defined(HAVE_UINT128_T))
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namespace ircd
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{
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#if defined(HAVE___INT128_T) && defined(HAVE__UINT128_T)
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using int128_t = __int128_t;
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using uint128_t = __uint128_t;
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#elif defined(HAVE___INT128)
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using int128_t = signed __int128;
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using uint128_t = unsigned __int128;
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#else
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#error "Missing 128 bit integer types on this platform."
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#endif
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}
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#endif
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//
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// Other convenience typedefs
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//
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#if defined(__cplusplus)
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namespace ircd
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{
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using longlong = long long;
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using ulonglong = unsigned long long;
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}
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#endif
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//
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// OpenCL compat
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//
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#if !defined(uchar)
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typedef unsigned char uchar;
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#endif
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//
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// Trouble; FreeBSD unsigned long ctype
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//
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#if defined(__FreeBSD__) && !defined(ulong)
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typedef u_long ulong;
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#endif
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