import tensorflow as tf
x=tf.constant([-0.2,0.5,43.98,-23.1,26.58])
y=tf.clip_by_value(x,1e-10,1.0)
sess=tf.Session()
print sess.run(y)

sess.close() 

clip_by_value(
    t,
    clip_value_min,
    clip_value_max,
    name=None
)

Given a tensor t, this operation returns a tensor of the same type and shape as t with its values clipped to clip_value_min and clip_value_max. Any values less than clip_value_min are set to clip_value_min. Any values greater than clip_value_max are set to clip_value_max.

Args:

t: A Tensor.
clip_value_min: A 0-D (scalar) Tensor, or a Tensor with the same shape as t. The minimum value to clip by.
clip_value_max: A 0-D (scalar) Tensor, or a Tensor with the same shape as t. The maximum value to clip by.
name: A name for the operation (optional).
Returns:

A clipped Tensor.