-#ifndef _PDCLIB_AUX_H
-#define _PDCLIB_AUX_H
-
/* Auxiliary PDCLib code <_PDCLIB_aux.h>
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
+#ifndef __PDCLIB_AUX_H
+#define __PDCLIB_AUX_H __PDCLIB_AUX_H
+
/* -------------------------------------------------------------------------- */
/* You should not have to edit anything in this file; if you DO have to, it */
/* would be considered a bug / missing feature: notify the author(s). */
#endif
#ifdef __cplusplus
- #define _PDCLIB_BEGIN_EXTERN_C extern "C" {
- #define _PDCLIB_END_EXTERN_C }
typedef bool _PDCLIB_bool;
#else
- #define _PDCLIB_BEGIN_EXTERN_C
- #define _PDCLIB_END_EXTERN_C
typedef _Bool _PDCLIB_bool;
#endif
#endif
#ifdef __has_attribute
- #define _PDCLIB_HAS_ATTRIBUTE(x) __has_builtin(x)
+ #define _PDCLIB_HAS_ATTRIBUTE(x) __has_attribute(x)
#else
#define _PDCLIB_HAS_ATTRIBUTE(x) (0)
#endif
#define _PDCLIB_DEPRECATED __attribute__ ((__deprecated__))
#endif
+#if !defined(_PDCLIB_UNREACHABLE) && _PDCLIB_GCC_BUILTIN(__builtin_unreachable, 4, 0)
+ #define _PDCLIB_UNREACHABLE __builtin_unreachable()
+#endif
+
+#if !defined(_PDCLIB_UNDEFINED) && defined(__GNUC__)
+ #define _PDCLIB_UNDEFINED(_var) \
+ do { __asm__("" : "=X"(_var)); } while(0)
+#endif
+
/* No-op fallbacks */
#ifndef _PDCLIB_nothrow
#define _PDCLIB_DEPRECATED
#endif
+#ifndef _PDCLIB_UNREACHABLE
+ #define _PDCLIB_UNREACHABLE do {} while(0)
+#endif
+
+#ifndef _PDCLIB_UNDEFINED
+ #define _PDCLIB_UNDEFINED(_var) do {} while(0)
+#endif
+
/*#if _PDCLIB_C_VERSION != 1999
#error PDCLib might not be fully conforming to either C89 or C95 prior to v2.x.
#endif*/
/* Helper macros: */
/* _PDCLIB_cc( x, y ) concatenates two preprocessor tokens without extending */
/* _PDCLIB_concat( x, y ) concatenates two preprocessor tokens with extending */
+/* _PDCLIB_concat3( x, y, z ) is the same for three tokens */
+/* _PDCLIB_static_assert( x ) provides a compile-time check mechanism */
/* -------------------------------------------------------------------------- */
#define _PDCLIB_cc( x, y ) x ## y
#define _PDCLIB_concat( x, y ) _PDCLIB_cc( x, y )
#define _PDCLIB_concat3( x, y, z ) _PDCLIB_concat( _PDCLIB_concat( x, y ), z )
+#if _PDCLIB_C_VERSION >= 2011
+#define _PDCLIB_static_assert _Static_assert
+#else
+#define _PDCLIB_static_assert( e, m ) ;enum { _PDCLIB_concat( _PDCLIB_assert_, __LINE__ ) = 1 / ( !!( e ) ) }
+#endif
#define _PDCLIB_symbol2value( x ) #x
#define _PDCLIB_symbol2string( x ) _PDCLIB_symbol2value( x )