Update ref
by subtracting value
from it.
tf.assign_sub(
ref, value, use_locking=None, name=None
)
This operation outputs ref
after the update is done.
This makes it easier to chain operations that need to use the reset value.
Unlike tf.math.subtract
, this op does not broadcast. ref
and value
must have the same shape.
Args |
ref
|
A mutable Tensor . Must be one of the following types: float32 ,
float64 , int64 , int32 , uint8 , uint16 , int16 , int8 ,
complex64 , complex128 , qint8 , quint8 , qint32 , half . Should be
from a Variable node.
|
value
|
A Tensor . Must have the same shape and dtype as ref . The value to
be subtracted to the variable.
|
use_locking
|
An optional bool . Defaults to False . If True, the
subtraction will be protected by a lock; otherwise the behavior is
undefined, but may exhibit less contention.
|
name
|
A name for the operation (optional).
|
Returns |
Same as "ref". Returned as a convenience for operations that want
to use the new value after the variable has been updated.
|