Increment the number stored at field in the hash at key by a double precision floating point
value. If key does not exist, a new key holding a hash is created. If field does not exist or
holds a string, the value is set to 0 before applying the operation. Since the value argument
is signed you can use this command to perform both increments and decrements.
<p>
The range of values supported by HINCRBYFLOAT is limited to double precision floating point
values.
<p>
<b>Time complexity:</b> O(1)
@param key
@param field
@param value
@return Double precision floating point reply The new value at field after the increment
operation.
Increment the number stored at field in the hash at key by a double precision floating point value. If key does not exist, a new key holding a hash is created. If field does not exist or holds a string, the value is set to 0 before applying the operation. Since the value argument is signed you can use this command to perform both increments and decrements. <p> The range of values supported by HINCRBYFLOAT is limited to double precision floating point values. <p> <b>Time complexity:</b> O(1) @param key @param field @param value @return Double precision floating point reply The new value at field after the increment operation.