added flags to storage_number; added gap functionality; restored reset functionality...

[netdata.git] / src / storage_number.h

diff --git a/src/storage_number.h b/src/storage_number.h
index c21f42797620ddb1ed490f6a4b86c0c8bf7bea31..e26fde78767f14fe7278275415dd9c52d6907309 100755 (executable)
--- a/src/storage_number.h
+++ b/src/storage_number.h
@@ -15,7 +15,24 @@ typedef int32_t storage_number;
 typedef uint32_t ustorage_number;
 #define STORAGE_NUMBER_FORMAT "%d"
 
-storage_number pack_storage_number(calculated_number value);
+#define SN_NOT_EXISTS          (0x0 << 24)
+#define SN_EXISTS                      (0x1 << 24)
+#define SN_EXISTS_RESET                (0x2 << 24)
+#define SN_EXISTS_UNDEF1       (0x3 << 24)
+#define SN_EXISTS_UNDEF2       (0x4 << 24)
+#define SN_EXISTS_UNDEF3       (0x5 << 24)
+#define SN_EXISTS_UNDEF4       (0x6 << 24)
+
+#define SN_FLAGS_MASK          (~(0x6 << 24))
+
+// extract the flags
+#define get_storage_number_flags(value) ((((storage_number)value) & (1 << 24)) | (((storage_number)value) & (2 << 24)) | (((storage_number)value) & (4 << 24)))
+
+// checks
+#define does_storage_number_exist(value) ((get_storage_number_flags(value) != 0)?1:0)
+#define did_storage_number_reset(value)  ((get_storage_number_flags(value) == SN_EXISTS_RESET)?1:0)
+
+storage_number pack_storage_number(calculated_number value, uint32_t flags);
 calculated_number unpack_storage_number(storage_number value);
 
 int print_calculated_number(char *str, calculated_number value);
@@ -25,4 +42,8 @@ int print_calculated_number(char *str, calculated_number value);
 #define STORAGE_NUMBER_NEGATIVE_MAX -0.00001
 #define STORAGE_NUMBER_NEGATIVE_MIN -167772150000000.0
 
+// accepted accuracy loss
+#define ACCURACY_LOSS 0.0001
+#define accuracy_loss(t1, t2) ((t1 == t2 || t1 == 0.0 || t2 == 0.0) ? 0.0 : (100.0 - ((t1 > t2) ? (t2 * 100.0 / t1 ) : (t1 * 100.0 / t2))))
+
 #endif /* NETDATA_STORAGE_NUMBER_H */