#define _printf_(a,b) __attribute__ ((format (printf, a, b)))
#define _alloc_(...) __attribute__ ((alloc_size(__VA_ARGS__)))
#define _sentinel_ __attribute__ ((sentinel))
-#define _noreturn_ __attribute__((noreturn))
#define _unused_ __attribute__ ((unused))
#define _destructor_ __attribute__ ((destructor))
#define _pure_ __attribute__ ((pure))
_a < _b ? _a : _b; \
})
+#define LESS_BY(A,B) \
+ __extension__ ({ \
+ typeof(A) _A = (A); \
+ typeof(B) _B = (B); \
+ _A > _B ? _A - _B : 0; \
+ })
+
#ifndef CLAMP
#define CLAMP(x, low, high) \
__extension__ ({ \
_found; \
})
-/* Define C11 thread_local attribute even on older compilers */
+/* Define C11 thread_local attribute even on older gcc compiler
+ * version */
#ifndef thread_local
/*
* Don't break on glibc < 2.16 that doesn't define __STDC_NO_THREADS__
#endif
#endif
+/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
+ * compiler versions */
+#ifndef noreturn
+#if __STDC_VERSION__ >= 201112L
+#define noreturn _Noreturn
+#else
+#define noreturn __attribute__((noreturn))
+#endif
+#endif
+
#include "log.h"