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Typing helper for the module
"""
from __future__ import annotations
from typing import Union, Any
import numpy as np
import jax
import jax.numpy as jnp
Tensor = Union[
np.ndarray, jax.numpy.ndarray
] #: Typing object for a numpy or jax tensor
def is_tensor(a: Any) -> bool:
"""
Test if object is a numpy or jax tensor
Args:
a: Object to be tested
Returns:
bool:
True if object is a numpy or jax.ndarray. False otherwise.
"""
return isinstance(a, (np.ndarray, jnp.ndarray))
def is_int(a: Any) -> bool:
"""
Test if object is a integer.
Args:
a: Object to be tested
Returns:
bool:
True if object is a integer. False otherwise.
"""
if isinstance(a, int):
return True
if (
isinstance(a, np.ndarray)
and np.isscalar(a)
and np.issubdtype(a.dtype, np.integer)
):
return True
if (
isinstance(a, jnp.ndarray)
and a.ndim == 0
and jnp.issubdtype(a.dtype, jnp.integer)
):
return True
return False
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