rcx

commit ae8e306e4c19015767a8b50cb3ceafffab4d3f2d
parent 4fbb7f100122a0b189d4218bde0e0d0a9cf4945e
Author: Robert Russell <robertrussell.72001@gmail.com>
Date:   Thu, 25 May 2023 20:48:09 -0700

Add SWAP macro

Diffstat:
M
inc/alloc.h
 | 
2
+-
M
inc/def.h
 | 
7
+++++++

2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/inc/alloc.h b/inc/alloc.h
@@ -26,4 +26,4 @@ int   r_ereallocz(void *p, usize osize, usize nsize);
 int   r_ereallocn(void *p, usize len, usize size);
 int   r_ereallocnz(void *p, usize olen, usize nlen, usize size);
 
-void free(void *p); 
+void free(void *p);
diff --git a/inc/def.h b/inc/def.h
@@ -18,6 +18,13 @@
 #define MIN(a,b) ((a) < (b) ? (a) : (b))
 #define MAX(a,b) ((a) > (b) ? (a) : (b))
 
+#define SWAP(a, b) do { \
+		u8 r_swap_temp_[sizeof(a) == sizeof(b) ? (isize)sizeof(a) : -1]; \
+		memcpy(&r_swap_temp_, &(a), sizeof(a)); \
+		memcpy(&(a), &(b), sizeof(a)); \
+		memcpy(&(b), &r_swap_temp_, sizeof(a)); \
+	} while(0)
+
 #ifdef __GNUC__
 #define NOINLINE __attribute__((noinline))
 #define UNUSED __attribute__((unused))