macro.h

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#pragma once
 
#define CU_IF_NULL(expr) if ((expr) == NULL)
#define CU_IF_NOT_NULL(expr) if ((expr) != NULL)
#define CU_DIE(msg) cu_panic_handler("Fatal error: %s", msg)
 
#define CU_ALIGN_UP(x, align) (((x) + (align) - 1) & ~((align) - 1))
#define CU_UNUSED(expr) (void)(expr)
#define CU_ARRAY_LEN(arr) (sizeof(arr) / sizeof((arr)[0]))
#define CU_BIT(x) (1u << (x))
 
#define CU_CONCAT_(a, b) a##b
#define CU_CONCAT(a, b) CU_CONCAT_(a, b)
 
#define CU_MIN(a, b) ((a) < (b) ? (a) : (b))
#define CU_MAX(a, b) ((a) > (b) ? (a) : (b))
 
#if defined(_WIN32) || defined(_WIN64) 
#define CU_PLAT_WINDOWS 1
#else
#define CU_PLAT_WINDOWS 0
#endif
 
#if defined(__APPLE__)
#define CU_PLAT_MACOS 1
#else
#define CU_PLAT_MACOS 0
#endif
 
#if defined(__linux__)
#define CU_PLAT_LINUX 1
#else
#define CU_PLAT_LINUX 0
#endif
 
/* WebAssembly platform detection */
#if defined(__EMSCRIPTEN__) || defined(__wasm__) || defined(__wasm32__)
#define CU_PLAT_WASM 1
#else
#define CU_PLAT_WASM 0
#endif
 
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
#define CU_PLAT_BSD 1
#else
#define CU_PLAT_BSD 0
#endif
 
#if CU_PLAT_MACOS || CU_PLAT_LINUX || CU_PLAT_BSD
#define CU_PLAT_POSIX 1
#else
#define CU_PLAT_POSIX 0
#endif
 
#if defined(__clang__)
  #define CU_COMPILER_CLANG 1
#else
  #define CU_COMPILER_CLANG 0
#endif
 
#if defined(__GNUC__) && !CU_COMPILER_CLANG
  #define CU_COMPILER_GCC 1
#else
  #define CU_COMPILER_GCC 0
#endif
 
#if defined(_MSC_VER)
  #define CU_COMPILER_MSVC 1
#else
  #define CU_COMPILER_MSVC 0
#endif
 
#if defined(__TINYC__)
  #define CU_COMPILER_TCC 1
#else
  #define CU_COMPILER_TCC 0
#endif
 
#if defined(__INTEL_COMPILER) || defined(__ICC)
  #define CU_COMPILER_INTEL 1
#else
  #define CU_COMPILER_INTEL 0
#endif
 
#if defined(__llvm__) && !CU_COMPILER_CLANG
  #define CU_COMPILER_LLVM 1
#else
  #define CU_COMPILER_LLVM 0
#endif
 
#if CU_COMPILER_CLANG && CU_PLAT_WINDOWS
#undef noreturn
#endif
 
#define UNREACHABLE(msg) cu_panic_handler("Unreachable code reached: %s", msg)
 
#define TODO(msg) cu_panic_handler("TODO: %s", msg)
 
#define CU_AS(expr, T) (T)(expr)