+#elif HAVE_C_STDATOMIC
+# include <stdatomic.h>
+# define atomic_add_8(X, Y) atomic_fetch_add(X, Y)
+# define atomic_add_16(X, Y) atomic_fetch_add(X, Y)
+# define atomic_add_32(X, Y) atomic_fetch_add(X, Y)
+# define atomic_add_size(X, Y) atomic_fetch_add(X, Y)
+# define atomic_dec_8(X) atomic_fetch_sub(X, 1)
+# define atomic_dec_16(X) atomic_fetch_sub(X, 1)
+# define atomic_dec_32(X) atomic_fetch_sub(X, 1)
+# define atomic_dec_size(X) atomic_fetch_sub(X, 1)
+/* The same as above, but these return the new value instead of void */
+# define ATOMIC_ADD_FETCH_DECL(T) \
+static inline T atomic_add_fetch_##T(ATOMIC T *ptr, T add) { \
+ T des, cur = atomic_load(ptr); \
+ do { \
+ des = cur + add; \
+ } while(!atomic_compare_exchange_weak(ptr, &cur, des)); \
+ return des; \
+}
+# define ATOMIC_SUB_FETCH_DECL(T) \
+T atomic_sub_fetch_##T(ATOMIC T *ptr) { \
+ T des, cur = atomic_load(ptr); \
+ do { \
+ des = cur - 1; \
+ } while(!atomic_compare_exchange_weak(ptr, &cur, des)); \
+ return des; \
+}
+ATOMIC_ADD_FETCH_DECL(uint8_t)
+# define atomic_add_8_nv(X, Y) atomic_add_fetch_uint8_t(X, Y)
+ATOMIC_ADD_FETCH_DECL(uint16_t)
+# define atomic_add_16_nv(X, Y) atomic_add_fetch_uint16_t(X, Y)
+ATOMIC_ADD_FETCH_DECL(uint32_t)
+# define atomic_add_32_nv(X, Y) atomic_add_fetch_uint32_t(X, Y)
+ATOMIC_ADD_FETCH_DECL(size_t)
+# define atomic_add_size_nv(X, Y) atomic_add_fetch_size_t(X, Y)
+# define atomic_dec_8_nv(X) atomic_sub_fetch<uint8_t>(X, Y)
+# define atomic_dec_16_nv(X) atomic_sub_fetch<uint16_t>(X, Y)
+# define atomic_dec_32_nv(X) atomic_sub_fetch<uint32_t>(X, Y)
+# define atomic_dec_size_nv(X) atomic_sub_fetch<size_t>(X, Y)
+#else
+#warning "Atomic operators not found so memslap will not work correctly"
+# define atomic_add_8(X, Y) 0
+# define atomic_add_16(X, Y) 0
+# define atomic_add_32(X, Y) 0
+# define atomic_add_size(X, Y) 0
+# define atomic_dec_8(X) 0
+# define atomic_dec_16(X) 0
+# define atomic_dec_32(X) 0
+# define atomic_dec_size(X) 0
+/* The same as above, but these return the new value instead of void */
+# define atomic_add_8_nv(X, Y) 0
+# define atomic_add_16_nv(X, Y) 0
+# define atomic_add_32_nv(X, Y) 0
+# define atomic_add_size_nv(X, Y) 0
+# define atomic_dec_8_nv(X) 0
+# define atomic_dec_16_nv(X) 0
+# define atomic_dec_32_nv(X) 0
+# define atomic_dec_size_nv(X) 0