mirror of
https://github.com/DrBeef/Raze.git
synced 2024-12-17 16:11:35 +00:00
979 lines
24 KiB
C++
979 lines
24 KiB
C++
// Compatibility declarations for things which might not be present in
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// certain build environments. It also levels the playing field caused
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// by different platforms.
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#ifndef compat_h_
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#define compat_h_
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#pragma once
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#include "xs_Float.h"
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#include "m_alloc.h"
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#include "intvec.h"
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////////// Compiler detection //////////
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#ifdef __GNUC__
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# define EDUKE32_GCC_PREREQ(major, minor) (major < __GNUC__ || (major == __GNUC__ && minor <= __GNUC_MINOR__))
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#else
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# define EDUKE32_GCC_PREREQ(major, minor) 0
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#endif
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#ifdef __clang__
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# define EDUKE32_CLANG_PREREQ(major, minor) (major < __clang_major__ || (major == __clang_major__ && minor <= __clang_minor__))
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#else
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# define EDUKE32_CLANG_PREREQ(major, minor) 0
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#endif
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#ifndef __has_builtin
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# define __has_builtin(x) 0 // Compatibility with non-clang compilers.
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#endif
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#ifndef __has_feature
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# define __has_feature(x) 0 // Compatibility with non-clang compilers.
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#endif
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#ifndef __has_extension
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# define __has_extension __has_feature // Compatibility with pre-3.0 compilers.
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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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#ifdef _MSC_VER
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# define EDUKE32_MSVC_PREREQ(major) ((major) <= (_MSC_VER))
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# ifdef __cplusplus
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# define EDUKE32_MSVC_CXX_PREREQ(major) ((major) <= (_MSC_VER))
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# else
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# define EDUKE32_MSVC_CXX_PREREQ(major) 0
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# endif
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#else
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# define EDUKE32_MSVC_PREREQ(major) 0
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# define EDUKE32_MSVC_CXX_PREREQ(major) 0
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#endif
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////////// Language detection //////////
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#if defined __STDC__
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# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L
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# define CSTD 2011
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# elif defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
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# define CSTD 1999
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# elif defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L
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# define CSTD 1994
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# else
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# define CSTD 1989
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# endif
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#else
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# define CSTD 0
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#endif
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#if defined __cplusplus && __cplusplus >= 201703L
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# define CXXSTD 2017
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#elif defined __cplusplus && __cplusplus >= 201402L
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# define CXXSTD 2014
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#elif defined __cplusplus && __cplusplus >= 201103L
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# define CXXSTD 2011
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#elif defined __cplusplus && __cplusplus >= 199711L
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# define CXXSTD 2014 // Thanks, Microsoft... :?
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#else
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# define CXXSTD 0
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#endif
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////////// Language and compiler feature polyfills //////////
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# define EXTERNC
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#ifndef UNREFERENCED_PARAMETER
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# define UNREFERENCED_PARAMETER(x) (x) = (x)
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#endif
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#ifndef UNREFERENCED_CONST_PARAMETER
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# ifdef _MSC_VER
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# define UNREFERENCED_CONST_PARAMETER(x) ((void)(x))
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# else
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# define UNREFERENCED_CONST_PARAMETER(x)
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# endif
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#endif
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#ifdef __GNUC__
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# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
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# define PRINTF_FORMAT(stringindex, firstargindex) __attribute__((format (printf, stringindex, firstargindex)))
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#else
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# define UNUSED(x) x
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# define PRINTF_FORMAT(stringindex, firstargindex)
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#endif
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#if defined __GNUC__ || defined __clang__
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# define ATTRIBUTE(attrlist) __attribute__(attrlist)
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#else
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# define ATTRIBUTE(attrlist)
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#endif
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#if !defined __clang__ && !defined USING_LTO
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# define ATTRIBUTE_OPTIMIZE(str) ATTRIBUTE((optimize(str)))
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#else
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# define ATTRIBUTE_OPTIMIZE(str)
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#endif
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#if EDUKE32_GCC_PREREQ(4,0)
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# define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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#else
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# define WARN_UNUSED_RESULT
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#endif
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#if defined _MSC_VER && _MSC_VER < 1800
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# define inline __inline
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#endif
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#ifndef MAY_ALIAS
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# ifdef _MSC_VER
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# define MAY_ALIAS
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# else
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# define MAY_ALIAS __attribute__((may_alias))
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# endif
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#endif
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#ifndef FORCE_INLINE
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# ifdef _MSC_VER
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# define FORCE_INLINE __forceinline
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# else
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# ifdef __GNUC__
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# define FORCE_INLINE inline __attribute__((always_inline))
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# else
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# define FORCE_INLINE inline
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# endif
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# endif
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#endif
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#ifndef _MSC_VER
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# ifndef __fastcall
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# if defined(__GNUC__) && defined(__i386__)
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# define __fastcall __attribute__((fastcall))
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# else
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# define __fastcall
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# endif
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# endif
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#endif
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#ifndef DISABLE_INLINING
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# define EXTERN_INLINE static inline
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# define EXTERN_INLINE_HEADER static inline
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#else
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# define EXTERN_INLINE __fastcall
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# define EXTERN_INLINE_HEADER extern __fastcall
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#endif
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#if 0 && defined(__OPTIMIZE__) && (defined __GNUC__ || __has_builtin(__builtin_expect))
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#define EDUKE32_PREDICT_TRUE(x) __builtin_expect(!!(x),1)
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#define EDUKE32_PREDICT_FALSE(x) __builtin_expect(!!(x),0)
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#else
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#define EDUKE32_PREDICT_TRUE(x) (x)
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#define EDUKE32_PREDICT_FALSE(x) (x)
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#endif
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#if EDUKE32_GCC_PREREQ(4,5) || __has_builtin(__builtin_unreachable)
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#define EDUKE32_UNREACHABLE_SECTION(...) __builtin_unreachable()
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#elif _MSC_VER
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#define EDUKE32_UNREACHABLE_SECTION(...) __assume(0)
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#else
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#define EDUKE32_UNREACHABLE_SECTION(...) __VA_ARGS__
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#endif
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#if EDUKE32_GCC_PREREQ(2,0) || defined _MSC_VER
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# define EDUKE32_FUNCTION __FUNCTION__
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#elif CSTD >= 1999 || CXXSTD >= 2011
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# define EDUKE32_FUNCTION __func__
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#else
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# define EDUKE32_FUNCTION "???"
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#endif
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#ifdef _MSC_VER
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# define EDUKE32_PRETTY_FUNCTION __FUNCSIG__
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#elif EDUKE32_GCC_PREREQ(2,0)
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# define EDUKE32_PRETTY_FUNCTION __PRETTY_FUNCTION__
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#else
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# define EDUKE32_PRETTY_FUNCTION EDUKE32_FUNCTION
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#endif
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#ifdef __COUNTER__
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# define EDUKE32_UNIQUE_SRC_ID __COUNTER__
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#else
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# define EDUKE32_UNIQUE_SRC_ID __LINE__
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#endif
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#if CXXSTD >= 2017
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# define EDUKE32_STATIC_ASSERT(cond) static_assert(cond)
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#elif CXXSTD >= 2011 || CSTD >= 2011 || EDUKE32_MSVC_CXX_PREREQ(1600)
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# define EDUKE32_STATIC_ASSERT(cond) static_assert(cond, "")
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#else
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/* C99 / C++03 static assertions based on source found in LuaJIT's src/lj_def.h. */
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# define EDUKE32_ASSERT_NAME2(name, line) name ## line
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# define EDUKE32_ASSERT_NAME(line) EDUKE32_ASSERT_NAME2(eduke32_assert_, line)
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# define EDUKE32_STATIC_ASSERT(cond) \
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extern void EDUKE32_ASSERT_NAME(EDUKE32_UNIQUE_SRC_ID)(int STATIC_ASSERTION_FAILED[(cond)?1:-1])
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#endif
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#ifndef FP_OFF
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# define FP_OFF(__p) ((uintptr_t)(__p))
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#endif
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#if defined __cplusplus && (__cplusplus >= 201103L || __has_feature(cxx_constexpr) || EDUKE32_MSVC_PREREQ(1900))
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# define HAVE_CONSTEXPR
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# define CONSTEXPR constexpr
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#else
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# define CONSTEXPR
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#endif
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#if CXXSTD >= 2011 || EDUKE32_MSVC_PREREQ(1700)
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# define FINAL final
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#else
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# define FINAL
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#endif
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#if CXXSTD >= 2014
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# define CONSTEXPR_CXX14 CONSTEXPR
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#else
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# define CONSTEXPR_CXX14
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#endif
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#if CXXSTD >= 2011
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# if __has_cpp_attribute(fallthrough)
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# define fallthrough__ [[fallthrough]]
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# elif __has_cpp_attribute(clang::fallthrough)
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# define fallthrough__ [[clang::fallthrough]]
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# elif __has_cpp_attribute(gnu::fallthrough)
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# define fallthrough__ [[gnu::fallthrough]]
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# endif
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#endif
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#ifndef fallthrough__
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# if !defined __clang__ && EDUKE32_GCC_PREREQ(7,0)
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# define fallthrough__ __attribute__((fallthrough))
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# elif defined _MSC_VER
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# define fallthrough__ __fallthrough
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# else
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# define fallthrough__
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# endif
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#endif
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////////// Platform detection //////////
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#if defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ || defined __bsdi__ || defined __DragonFly__
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# define EDUKE32_BSD
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#endif
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#ifdef __APPLE__
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# include <TargetConditionals.h>
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# if TARGET_OS_IPHONE || TARGET_IPHONE_SIMULATOR
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# define EDUKE32_IOS
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# else
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# define EDUKE32_OSX
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# endif
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#endif
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////////// Architecture detection //////////
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#if defined _LP64 || defined __LP64__ || defined __64BIT__ || _ADDR64 || defined _WIN64 || defined __arch64__ || \
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__WORDSIZE == 64 || (defined __sparc && defined __sparcv9) || defined __x86_64 || defined __amd64 || \
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defined __x86_64__ || defined __amd64__ || defined _M_X64 || defined _M_IA64 || defined __ia64 || defined __IA64__
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# define BITNESS64
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#endif
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#if defined(__linux)
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# include <endian.h>
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif __BYTE_ORDER == __BIG_ENDIAN
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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#elif defined(GEKKO) || defined(__ANDROID__)
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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#elif defined(__OpenBSD__)
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# include <machine/endian.h>
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# if _BYTE_ORDER == _LITTLE_ENDIAN
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif _BYTE_ORDER == _BIG_ENDIAN
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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#elif defined EDUKE32_BSD
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# include <sys/endian.h>
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# if _BYTE_ORDER == _LITTLE_ENDIAN
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif _BYTE_ORDER == _BIG_ENDIAN
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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#elif defined(__APPLE__)
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# if defined(__LITTLE_ENDIAN__)
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif defined(__BIG_ENDIAN__)
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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# include <libkern/OSByteOrder.h>
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#elif defined(__BEOS__)
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# include <posix/endian.h>
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# if LITTLE_ENDIAN != 0
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif BIG_ENDIAN != 0
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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#elif defined(__QNX__)
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# if defined __LITTLEENDIAN__
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif defined __BIGENDIAN__
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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#elif defined(__sun)
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# if defined _LITTLE_ENDIAN
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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# elif defined _BIG_ENDIAN
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# define B_LITTLE_ENDIAN 0
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# define B_BIG_ENDIAN 1
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# endif
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#elif defined(_WIN32) || defined(SKYOS) || defined(__SYLLABLE__)
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# define B_LITTLE_ENDIAN 1
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# define B_BIG_ENDIAN 0
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#endif
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#if !defined(B_LITTLE_ENDIAN) || !defined(B_BIG_ENDIAN)
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# error Unknown endianness
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#endif
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////////// Standard library headers //////////
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#undef __USE_MINGW_ANSI_STDIO // Workaround for MinGW-w64.
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#ifndef __STDC_FORMAT_MACROS
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# define __STDC_FORMAT_MACROS
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#endif
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#ifndef __STDC_LIMIT_MACROS
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# define __STDC_LIMIT_MACROS
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#endif
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#ifndef _USE_MATH_DEFINES
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# define _USE_MATH_DEFINES
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#endif
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#include <inttypes.h>
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#include <stdint.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stddef.h>
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#ifndef USE_PHYSFS
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#include <stdio.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#if !(defined _WIN32 && defined __clang__)
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#include <float.h>
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#endif
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#include <math.h>
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#include <ctype.h>
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#include <errno.h>
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#include <time.h>
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#include <assert.h>
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#ifdef __cplusplus
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# include <limits>
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# if CXXSTD >= 2011 || EDUKE32_MSVC_PREREQ(1800)
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# include <algorithm>
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# include <functional>
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# include <type_traits>
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// we need this because MSVC does not properly identify C++11 support
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# define HAVE_CXX11_HEADERS
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# endif
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#endif
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////////// Platform headers //////////
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#if !defined __APPLE__ && (!defined EDUKE32_BSD || !__STDC__)
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# include <malloc.h>
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#endif
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#ifndef USE_PHYSFS
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#if defined(_WIN32)
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# include <direct.h>
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|
# include <io.h>
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|
#else
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|
# include <unistd.h>
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|
#endif
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|
#endif
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#include "engineerrors.h"
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////////// DEPRECATED: Standard library prefixing //////////
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#ifdef _MSC_VER
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|
# if defined _M_AMD64 || defined _M_ARM64 || defined _M_X64 || defined _WIN64
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|
typedef int64_t ssize_t;
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|
# else
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|
typedef int32_t ssize_t;
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|
# endif
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|
#endif
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typedef size_t bsize_t;
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|
typedef ssize_t bssize_t;
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#define BMAX_PATH 256
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|
#define Bassert assert
|
|
#define Brand rand
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|
#define Balloca alloca
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|
#define Bmalloc malloc
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|
#define Bcalloc calloc
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|
#define Brealloc realloc
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#define Bstrcpy strcpy
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|
#define Bstrncpy strncpy
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|
#define Bstrcmp strcmp
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|
#define Bstrncmp strncmp
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|
#define Bstrcat strcat
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|
#define Bstrncat strncat
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|
#define Bstrlen strlen
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|
#define Bstrchr strchr
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#define Bstrrchr strrchr
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|
#define Bstrtol strtol
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|
#define Bstrtoul strtoul
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|
#define Bstrtod strtod
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|
#define Bstrstr strstr
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#define Bislower islower
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|
#define Bisupper isupper
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|
#define Bisdigit isdigit
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|
#define Btoupper toupper
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|
#define Btolower tolower
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|
#define Bmemcpy memcpy
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#define Bmemset memset
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|
#define Bmemcmp memcmp
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|
#define Bsprintf sprintf
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////////// Standard library wrappers //////////
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#if defined(_MSC_VER)
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|
# define Bstrcasecmp _stricmp
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# define Bstrncasecmp _strnicmp
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|
#elif defined(__QNX__)
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|
# define Bstrcasecmp stricmp
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# define Bstrncasecmp strnicmp
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#else
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# define Bstrcasecmp strcasecmp
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# define Bstrncasecmp strncasecmp
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#endif
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static inline int32_t atoi_safe(const char *str) { return (int32_t)strtoll(str, NULL, 10); }
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|
#define Batoi(x) atoi_safe(x)
|
|
#define Batol(str) (strtol(str, NULL, 10))
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static inline int Blrintf(const double x)
|
|
{
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|
return xs_CRoundToInt(x);
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|
}
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|
#if defined(__arm__)
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|
# define Bsqrtf __builtin_sqrtf
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|
#else
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|
# define Bsqrtf sqrtf
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|
#endif
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|
inline void Bexit(int a)
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|
{
|
|
throw CExitEvent(a);
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|
}
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////////// Standard library monkey patching //////////
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|
|
|
#ifndef NULL
|
|
# define NULL ((void *)0)
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|
#endif
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|
|
#ifndef O_BINARY
|
|
# define O_BINARY 0
|
|
#endif
|
|
#ifndef O_TEXT
|
|
# define O_TEXT 0
|
|
#endif
|
|
|
|
#ifndef F_OK
|
|
# define F_OK 0
|
|
#endif
|
|
|
|
|
|
////////// Metaprogramming structs //////////
|
|
|
|
#ifdef __cplusplus
|
|
|
|
# ifdef HAVE_CXX11_HEADERS
|
|
using std::is_integral;
|
|
template <typename T>
|
|
struct is_signed
|
|
{
|
|
static constexpr bool value = std::is_signed<T>::value;
|
|
};
|
|
template <typename T>
|
|
struct is_unsigned
|
|
{
|
|
static constexpr bool value = std::is_unsigned<T>::value;
|
|
};
|
|
# endif
|
|
|
|
# if CXXSTD >= 2014
|
|
using std::enable_if_t;
|
|
using std::conditional_t;
|
|
using std::make_signed_t;
|
|
using std::make_unsigned_t;
|
|
using std::remove_pointer_t;
|
|
# elif defined HAVE_CXX11_HEADERS
|
|
template <bool B, class T = void>
|
|
using enable_if_t = typename std::enable_if<B, T>::type;
|
|
template<bool B, class T, class F>
|
|
using conditional_t = typename std::conditional<B, T, F>::type;
|
|
template <typename T>
|
|
using make_signed_t = typename std::make_signed<T>::type;
|
|
template <typename T>
|
|
using make_unsigned_t = typename std::make_unsigned<T>::type;
|
|
template <class T>
|
|
using remove_pointer_t = typename std::remove_pointer<T>::type;
|
|
# endif
|
|
|
|
# ifdef HAVE_CXX11_HEADERS
|
|
template <typename type, typename other_type_with_sign>
|
|
using take_sign_t = conditional_t< is_signed<other_type_with_sign>::value, make_signed_t<type>, make_unsigned_t<type> >;
|
|
# endif
|
|
|
|
template <size_t size>
|
|
struct integers_of_size { };
|
|
template <>
|
|
struct integers_of_size<sizeof(int8_t)>
|
|
{
|
|
typedef int8_t i;
|
|
typedef uint8_t u;
|
|
};
|
|
template <>
|
|
struct integers_of_size<sizeof(int16_t)>
|
|
{
|
|
typedef int16_t i;
|
|
typedef uint16_t u;
|
|
};
|
|
template <>
|
|
struct integers_of_size<sizeof(int32_t)>
|
|
{
|
|
typedef int32_t i;
|
|
typedef uint32_t u;
|
|
};
|
|
template <>
|
|
struct integers_of_size<sizeof(int64_t)>
|
|
{
|
|
typedef int64_t i;
|
|
typedef uint64_t u;
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
////////// Typedefs //////////
|
|
|
|
#if defined(__x86_64__)
|
|
// for 32-bit pointers in x86_64 code, such as `gcc -mx32`
|
|
typedef uint64_t reg_t;
|
|
typedef int64_t sreg_t;
|
|
#else
|
|
typedef size_t reg_t;
|
|
typedef ssize_t sreg_t;
|
|
#endif
|
|
|
|
#ifdef HAVE_CXX11_HEADERS
|
|
using native_t = typename integers_of_size<sizeof(reg_t)>::i;
|
|
using unative_t = typename integers_of_size<sizeof(reg_t)>::u;
|
|
#else
|
|
typedef sreg_t native_t;
|
|
typedef reg_t unative_t;
|
|
#endif
|
|
EDUKE32_STATIC_ASSERT(sizeof(native_t) == sizeof(unative_t));
|
|
|
|
typedef struct MAY_ALIAS {
|
|
int32_t x, y;
|
|
} vec2_t;
|
|
|
|
typedef struct {
|
|
uint32_t x, y;
|
|
} vec2u_t;
|
|
|
|
typedef struct {
|
|
float x, y;
|
|
} vec2f_t;
|
|
|
|
typedef struct {
|
|
double x, y;
|
|
} vec2d_t;
|
|
|
|
typedef struct MAY_ALIAS {
|
|
union {
|
|
struct { int32_t x, y, z; };
|
|
vec2_t vec2;
|
|
};
|
|
} vec3_t;
|
|
|
|
typedef struct MAY_ALIAS {
|
|
union {
|
|
struct { int16_t x, y, z; };
|
|
vec2_16_t vec2;
|
|
};
|
|
} vec3_16_t;
|
|
|
|
typedef struct {
|
|
union {
|
|
struct {
|
|
union { float x, d; };
|
|
union { float y, u; };
|
|
union { float z, v; };
|
|
};
|
|
vec2f_t vec2;
|
|
};
|
|
} vec3f_t;
|
|
|
|
EDUKE32_STATIC_ASSERT(sizeof(vec3f_t) == sizeof(float) * 3);
|
|
|
|
typedef struct {
|
|
union { double x; double d; };
|
|
union { double y; double u; };
|
|
union { double z; double v; };
|
|
} vec3d_t;
|
|
|
|
EDUKE32_STATIC_ASSERT(sizeof(vec3d_t) == sizeof(double) * 3);
|
|
|
|
typedef struct {
|
|
float x, y, z, w;
|
|
} vec4f_t;
|
|
|
|
typedef struct {
|
|
float x, y, z, w;
|
|
} vec4d_t;
|
|
|
|
|
|
////////// Language tricks that depend on size_t //////////
|
|
|
|
#include "basics.h"
|
|
|
|
# define ARRAY_SIZE(arr) countof(arr)
|
|
#define ARRAY_SSIZE(arr) (native_t)ARRAY_SIZE(arr)
|
|
|
|
|
|
////////// Memory management //////////
|
|
|
|
#if !defined NO_ALIGNED_MALLOC
|
|
static FORCE_INLINE void *Baligned_alloc(const size_t alignment, const size_t size)
|
|
{
|
|
#ifdef _WIN32
|
|
void *ptr = _aligned_malloc(size, alignment);
|
|
#elif defined __APPLE__ || defined EDUKE32_BSD
|
|
void *ptr = NULL;
|
|
posix_memalign(&ptr, alignment, size);
|
|
#else
|
|
void *ptr = memalign(alignment, size);
|
|
#endif
|
|
|
|
return ptr;
|
|
}
|
|
#else
|
|
# define Baligned_alloc(alignment, size) Bmalloc(size)
|
|
#endif
|
|
|
|
#if defined _WIN32 && !defined NO_ALIGNED_MALLOC
|
|
# define Baligned_free _aligned_free
|
|
#else
|
|
# define Baligned_free free
|
|
#endif
|
|
|
|
|
|
////////// Pointer management //////////
|
|
|
|
#define DO_FREE_AND_NULL(var) do { \
|
|
Xfree(var); (var) = NULL; \
|
|
} while (0)
|
|
|
|
#define ALIGNED_FREE_AND_NULL(var) do { \
|
|
Xaligned_free(var); (var) = NULL; \
|
|
} while (0)
|
|
|
|
|
|
////////// Data serialization //////////
|
|
|
|
static FORCE_INLINE CONSTEXPR uint16_t B_SWAP16_impl(uint16_t value)
|
|
{
|
|
return
|
|
((value & 0xFF00u) >> 8u) |
|
|
((value & 0x00FFu) << 8u);
|
|
}
|
|
static FORCE_INLINE CONSTEXPR uint32_t B_SWAP32_impl(uint32_t value)
|
|
{
|
|
return
|
|
((value & 0xFF000000u) >> 24u) |
|
|
((value & 0x00FF0000u) >> 8u) |
|
|
((value & 0x0000FF00u) << 8u) |
|
|
((value & 0x000000FFu) << 24u);
|
|
}
|
|
static FORCE_INLINE CONSTEXPR uint64_t B_SWAP64_impl(uint64_t value)
|
|
{
|
|
return
|
|
((value & 0xFF00000000000000ULL) >> 56ULL) |
|
|
((value & 0x00FF000000000000ULL) >> 40ULL) |
|
|
((value & 0x0000FF0000000000ULL) >> 24ULL) |
|
|
((value & 0x000000FF00000000ULL) >> 8ULL) |
|
|
((value & 0x00000000FF000000ULL) << 8ULL) |
|
|
((value & 0x0000000000FF0000ULL) << 24ULL) |
|
|
((value & 0x000000000000FF00ULL) << 40ULL) |
|
|
((value & 0x00000000000000FFULL) << 56ULL);
|
|
}
|
|
|
|
/* The purpose of B_PASS* as functions, as opposed to macros, is to prevent them from being used as lvalues. */
|
|
#if CXXSTD >= 2011 || EDUKE32_MSVC_PREREQ(1900)
|
|
template <typename T>
|
|
static FORCE_INLINE CONSTEXPR take_sign_t<int16_t, T> B_SWAP16(T x)
|
|
{
|
|
return static_cast< take_sign_t<int16_t, T> >(B_SWAP16_impl(static_cast<uint16_t>(x)));
|
|
}
|
|
template <typename T>
|
|
static FORCE_INLINE CONSTEXPR take_sign_t<int32_t, T> B_SWAP32(T x)
|
|
{
|
|
return static_cast< take_sign_t<int32_t, T> >(B_SWAP32_impl(static_cast<uint32_t>(x)));
|
|
}
|
|
template <typename T>
|
|
static FORCE_INLINE CONSTEXPR take_sign_t<int64_t, T> B_SWAP64(T x)
|
|
{
|
|
return static_cast< take_sign_t<int64_t, T> >(B_SWAP64_impl(static_cast<uint64_t>(x)));
|
|
}
|
|
|
|
template <typename T>
|
|
static FORCE_INLINE CONSTEXPR take_sign_t<int16_t, T> B_PASS16(T x)
|
|
{
|
|
return static_cast< take_sign_t<int16_t, T> >(x);
|
|
}
|
|
template <typename T>
|
|
static FORCE_INLINE CONSTEXPR take_sign_t<int32_t, T> B_PASS32(T x)
|
|
{
|
|
return static_cast< take_sign_t<int32_t, T> >(x);
|
|
}
|
|
template <typename T>
|
|
static FORCE_INLINE CONSTEXPR take_sign_t<int64_t, T> B_PASS64(T x)
|
|
{
|
|
return static_cast< take_sign_t<int64_t, T> >(x);
|
|
}
|
|
#else
|
|
#define B_SWAP16(x) B_SWAP16_impl(x)
|
|
#define B_SWAP32(x) B_SWAP32_impl(x)
|
|
#define B_SWAP64(x) B_SWAP64_impl(x)
|
|
|
|
static FORCE_INLINE CONSTEXPR uint16_t B_PASS16(uint16_t const x) { return x; }
|
|
static FORCE_INLINE CONSTEXPR uint32_t B_PASS32(uint32_t const x) { return x; }
|
|
static FORCE_INLINE CONSTEXPR uint64_t B_PASS64(uint64_t const x) { return x; }
|
|
#endif
|
|
|
|
#if B_LITTLE_ENDIAN == 1
|
|
# define B_LITTLE64(x) B_PASS64(x)
|
|
# define B_BIG64(x) B_SWAP64(x)
|
|
# define B_LITTLE32(x) B_PASS32(x)
|
|
# define B_BIG32(x) B_SWAP32(x)
|
|
# define B_LITTLE16(x) B_PASS16(x)
|
|
# define B_BIG16(x) B_SWAP16(x)
|
|
#elif B_BIG_ENDIAN == 1
|
|
# define B_LITTLE64(x) B_SWAP64(x)
|
|
# define B_BIG64(x) B_PASS64(x)
|
|
# define B_LITTLE32(x) B_SWAP32(x)
|
|
# define B_BIG32(x) B_PASS32(x)
|
|
# define B_LITTLE16(x) B_SWAP16(x)
|
|
# define B_BIG16(x) B_PASS16(x)
|
|
#endif
|
|
|
|
static FORCE_INLINE void B_BUF16(void * const buf, uint16_t const x) { *(uint16_t *) buf = x; }
|
|
static FORCE_INLINE void B_BUF32(void * const buf, uint32_t const x) { *(uint32_t *) buf = x; }
|
|
static FORCE_INLINE void B_BUF64(void * const buf, uint64_t const x) { *(uint64_t *) buf = x; }
|
|
|
|
static FORCE_INLINE CONSTEXPR uint16_t B_UNBUF16(void const * const buf) { return *(uint16_t const *) buf; }
|
|
static FORCE_INLINE CONSTEXPR uint32_t B_UNBUF32(void const * const buf) { return *(uint32_t const *) buf; }
|
|
static FORCE_INLINE CONSTEXPR uint64_t B_UNBUF64(void const * const buf) { return *(uint64_t const *) buf; }
|
|
|
|
|
|
////////// Abstract data operations //////////
|
|
|
|
#define ABSTRACT_DECL static FORCE_INLINE WARN_UNUSED_RESULT CONSTEXPR
|
|
|
|
template <typename T, typename X, typename Y> ABSTRACT_DECL T clamp(T in, X min, Y max) { return in <= (T) min ? (T) min : (in >= (T) max ? (T) max : in); }
|
|
template <typename T, typename X, typename Y> ABSTRACT_DECL T clamp2(T in, X min, Y max) { return in >= (T) max ? (T) max : (in <= (T) min ? (T) min : in); }
|
|
using std::min;
|
|
using std::max;
|
|
|
|
////////// Mathematical operations //////////
|
|
|
|
#ifdef __cplusplus
|
|
#ifdef HAVE_CXX11_HEADERS
|
|
template <typename T>
|
|
struct DivResult
|
|
{
|
|
T q; // quotient
|
|
T r; // remainder
|
|
};
|
|
template <typename T>
|
|
FORCE_INLINE CONSTEXPR DivResult<T> divide(T lhs, T rhs)
|
|
{
|
|
return DivResult<T>{(T)(lhs / rhs), (T)(lhs % rhs)};
|
|
}
|
|
template <native_t base, typename T>
|
|
FORCE_INLINE CONSTEXPR DivResult<T> divrhs(T lhs)
|
|
{
|
|
return divide(lhs, (T)base);
|
|
}
|
|
|
|
template <typename T, typename T2>
|
|
static FORCE_INLINE CONSTEXPR_CXX14 enable_if_t<is_signed<T>::value, T> NEGATE_ON_CONDITION(T value, T2 condition)
|
|
{
|
|
T const invert = !!condition;
|
|
return (value ^ -invert) + invert;
|
|
}
|
|
#endif
|
|
|
|
template <size_t base, typename T>
|
|
CONSTEXPR size_t logbase(T n)
|
|
{
|
|
return n < static_cast<T>(base) ? 1 : 1 + logbase<base>(n / static_cast<T>(base));
|
|
}
|
|
// hackish version to work around the impossibility of representing abs(INT*_MIN)
|
|
template <size_t base, typename T>
|
|
CONSTEXPR size_t logbasenegative(T n)
|
|
{
|
|
return n > static_cast<T>(-(native_t)base) ? 1 : 1 + logbase<base>(n / static_cast<T>(-(native_t)base));
|
|
}
|
|
|
|
#endif
|
|
|
|
#define isPow2OrZero(v) (((v) & ((v) - 1)) == 0)
|
|
#define isPow2(v) (isPow2OrZero(v) && (v))
|
|
|
|
////////// Bitfield manipulation //////////
|
|
|
|
#if 0
|
|
// Behold the probably most useless (de)optimization I ever discovered.
|
|
// Replacing a simple bit shift with a memory access through a global pointer is surely going to improve matters... >(
|
|
// Constexpr means shit here if the index is not a constant!
|
|
static CONSTEXPR const char pow2char[8] = {1,2,4,8,16,32,64,128u};
|
|
#else
|
|
// Revert the above to a real bit shift through some C++ operator magic. That saves me from reverting all the code that uses this construct.
|
|
static struct
|
|
{
|
|
constexpr uint8_t operator[](int index) const { return 1 << index; };
|
|
} pow2char;
|
|
#endif
|
|
|
|
static FORCE_INLINE void bitmap_set(uint8_t *const ptr, int const n) { ptr[n>>3] |= pow2char[n&7]; }
|
|
static FORCE_INLINE void bitmap_clear(uint8_t *const ptr, int const n) { ptr[n>>3] &= ~pow2char[n&7]; }
|
|
static FORCE_INLINE CONSTEXPR char bitmap_test(uint8_t const *const ptr, int const n) { return ptr[n>>3] & pow2char[n&7]; }
|
|
|
|
////////// Utility functions //////////
|
|
|
|
// breadth-first search helpers
|
|
template <typename T>
|
|
void bfirst_search_init(T *const list, uint8_t *const bitmap, T *const eltnumptr, int const maxelts, int const firstelt)
|
|
{
|
|
Bmemset(bitmap, 0, (maxelts+7)>>3);
|
|
|
|
list[0] = firstelt;
|
|
bitmap_set(bitmap, firstelt);
|
|
*eltnumptr = 1;
|
|
}
|
|
|
|
template <typename T>
|
|
void bfirst_search_try(T *const list, uint8_t *const bitmap, T *const eltnumptr, int const elt)
|
|
{
|
|
if (!bitmap_test(bitmap, elt))
|
|
{
|
|
bitmap_set(bitmap, elt);
|
|
list[(*eltnumptr)++] = elt;
|
|
}
|
|
}
|
|
|
|
// Copy min(strlen(src)+1, n) characters into dst, always terminate with a NUL.
|
|
static FORCE_INLINE char *Bstrncpyz(char *dst, const char *src, bsize_t n)
|
|
{
|
|
Bstrncpy(dst, src, n);
|
|
dst[n-1] = 0;
|
|
return dst;
|
|
}
|
|
|
|
////////// PANICKING ALLOCATION WRAPPERS //////////
|
|
|
|
|
|
#define Xstrdup(s) (strdup(s))
|
|
#define Xmalloc(size) (M_Malloc(size))
|
|
#define Xcalloc(nmemb, size) (M_Calloc(nmemb, size))
|
|
#define Xrealloc(ptr, size) (M_Realloc(ptr, size))
|
|
#define Xaligned_alloc(alignment, size) (M_Malloc(size))
|
|
#define Xaligned_calloc(alignment, count, size) (M_Calloc(count, size))
|
|
#define Xfree(ptr) (M_Free(ptr))
|
|
#define Xaligned_free(ptr) (M_Free(ptr))
|
|
|
|
////////// Inlined external libraries //////////
|
|
|
|
#include "fix16.h"
|
|
#include "vectors.h"
|
|
using ClockTicks = int;
|
|
|
|
inline FVector3 GetSoundPos(const vec3_t *pos)
|
|
{
|
|
// converts a Build coordinate to a sound system coordinate
|
|
const float xmul = 1 / 16.f;
|
|
const float ymul = -1 / 16.f;
|
|
const float zmul = -1 / 256.f;
|
|
return { pos->x* xmul, pos->z* zmul, pos->y* ymul };
|
|
}
|
|
|
|
/* End dependence on compat.o object. */
|
|
|
|
|
|
////////// EDuke32-specific features //////////
|
|
|
|
#ifndef TRUE
|
|
# define TRUE 1
|
|
#endif
|
|
|
|
#ifndef FALSE
|
|
# define FALSE 0
|
|
#endif
|
|
|
|
#define WITHKPLIB
|
|
|
|
#endif // compat_h_
|