X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fhelper%2Ftypes.h;h=03ab5f0c2edd03ef2c8afa168c1b9f8343c54691;hb=0a9daddc2e20d9ff5053a9faf3e1ec11fd600c73;hp=a8753c5f149115c539e2e39d3eeb07256344f172;hpb=f0ce88b3af9a6090ac986160950d66317de5087e;p=openocd.git

diff --git a/src/helper/types.h b/src/helper/types.h
index a8753c5f14..03ab5f0c2e 100644
--- a/src/helper/types.h
+++ b/src/helper/types.h
@@ -60,6 +60,16 @@ typedef bool _Bool;
 #define __stringify(s) #s
 
 
+/**
+ * Compute the number of elements of a variable length array.
+ * <code>
+ * const char *strs[] = { "a", "b", "c" };
+ * unsigned num_strs = ARRAY_SIZE(strs);
+ * </code>
+ */
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(*(x)))
+
+
 /**
  * Cast a member of a structure out to the containing structure.
  * @param ptr The pointer to the member.
@@ -73,6 +83,15 @@ typedef bool _Bool;
 	(type *)( (char *)__mptr - offsetof(type,member) );})
 
 
+/**
+ * Rounds @c m up to the nearest multiple of @c n using division.
+ * @param m The value to round up to @c n.
+ * @param n Round @c m up to a multiple of this number.
+ * @returns The rounded integer value.
+ */
+#define DIV_ROUND_UP(m, n)	(((m) + (n) - 1) / (n))
+
+
 /* DANGER!!!! here be dragons!
  *
  * Leave these fn's as byte accesses because it is safe