X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Futil.h;h=9e7b88f06825866358adca046f55108a6163b40a;hb=45a7de56bbcb2adfabf2082b1133e768777d44d6;hp=dad7b7c4047523f9cb71653e29260ee16272a533;hpb=bbb18ba723a1d82405961e4dd351a82758d633af;p=openvswitch

diff --git a/lib/util.h b/lib/util.h
index dad7b7c4..9e7b88f0 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -52,10 +52,19 @@
 
 extern const char *program_name;
 
+/* Returns the number of elements in ARRAY. */
 #define ARRAY_SIZE(ARRAY) (sizeof ARRAY / sizeof *ARRAY)
+
+/* Returns X / Y, rounding up.  X must be nonnegative to round correctly. */
 #define DIV_ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y))
+
+/* Returns X rounded up to the nearest multiple of Y. */
 #define ROUND_UP(X, Y) (DIV_ROUND_UP(X, Y) * (Y))
+
+/* Returns X rounded down to the nearest multiple of Y. */
 #define ROUND_DOWN(X, Y) ((X) / (Y) * (Y))
+
+/* Returns true if X is a power of 2, otherwise false. */
 #define IS_POW2(X) ((X) && !((X) & ((X) - 1)))
 
 #ifndef MIN
@@ -89,6 +98,7 @@ void ovs_print_version(char *date, char *time,
 void out_of_memory(void) NO_RETURN;
 void *xmalloc(size_t) MALLOC_LIKE;
 void *xcalloc(size_t, size_t) MALLOC_LIKE;
+void *xzalloc(size_t) MALLOC_LIKE;
 void *xrealloc(void *, size_t);
 void *xmemdup(const void *, size_t) MALLOC_LIKE;
 char *xmemdup0(const char *, size_t) MALLOC_LIKE;
@@ -111,6 +121,12 @@ bool str_to_uint(const char *, int base, unsigned int *);
 bool str_to_ulong(const char *, int base, unsigned long *);
 bool str_to_ullong(const char *, int base, unsigned long long *);
 
+bool str_to_double(const char *, double *);
+
+int hexit_value(int c);
+
+char *dir_name(const char *file_name);
+
 #ifdef  __cplusplus
 }
 #endif