Increment the specified field
of a hash stored at key
, and representing a floating point number, by the specified increment
. If the increment value is negative, the result is to have the hash field value decremented instead of incremented. If the field does not exist, it is set to 0
before performing the operation. An error is returned if one of the following conditions occur:
The exact behavior of this command is identical to the one of the INCRBYFLOAT
command, please refer to the documentation of INCRBYFLOAT
for further information.
@return
@bulk-string-reply: the value of field
after the increment.
@examples
HSET mykey field 10.50
HINCRBYFLOAT mykey field 0.1
HINCRBYFLOAT mykey field -5
HSET mykey field 5.0e3
HINCRBYFLOAT mykey field 2.0e2
The command is always propagated in the replication link and the Append Only File as a HSET
operation, so that differences in the underlying floating point math implementation will not be sources of inconsistency.