mem: add memeqzero.

[ccan] / ccan / mem / mem.h

diff --git a/ccan/mem/mem.h b/ccan/mem/mem.h
index 68a4aa3c18885c207a9fd11828bc5174bead6905..06a1b7a1f2411150147d043cc0bfdbf7635967e8 100644 (file)
--- a/ccan/mem/mem.h
+++ b/ccan/mem/mem.h
@@ -144,6 +144,19 @@ static inline bool memstarts(void const *data, size_t data_len,
  *     }
  */
 PURE_FUNCTION
+bool memeqzero(const void *data, size_t length);
+
+/**
+ * memeqzero - Is a byte array all zeroes?
+ * @data: byte array
+ * @length: length of @data in bytes
+ *
+ * Example:
+ *     if (memeqzero(somebytes, bytes_len)) {
+ *             printf("somebytes == 0!\n");
+ *     }
+ */
+PURE_FUNCTION
 static inline bool memeqstr(const void *data, size_t length, const char *string)
 {
        return memeq(data, length, string, strlen(string));