-#ifndef _PDCLIB_AUX_H
-#define _PDCLIB_AUX_H
+#ifndef __PDCLIB_AUX_H
+#define __PDCLIB_AUX_H __PDCLIB_AUX_H
/* Auxiliary PDCLib code <_PDCLIB_aux.h>
#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
/* 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 )