code: def gaussian(
      x: TensorType, mu: TensorType, var: TensorType
  ) -> tf.Tensor:
      return -0.5 * (
          np.log(2 * np.pi) + tf.math.log(var) + tf.square(mu - x) / var
      )
  
file_path: GPflow/gpflow/logdensities.py
imports: import numpy
  import tensorflow
  from check_shapes import check_shapes
  from .base import TensorType
  from .utilities import to_default_float
label_desc: Use image node_id 1 for calling a global function with example usage: gaussian(x, mu, var) and returns: unknown