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jax.numpy.spacing — JAX documentation

jax.numpy.spacing#
jax.numpy.spacing(x, /)[source]#

Return the spacing between x and the next adjacent number.

JAX implementation of numpy.spacing().

Parameters:

x (ArrayLike) – real-valued array. Integer or boolean types will be cast to float.

Returns:

Array of same shape as x containing spacing between each entry of x and its closest adjacent value.

Return type:

Array

Examples

>>> x = jnp.array([0.0, 0.25, 0.5, 0.75, 1.0], dtype='float32')
>>> jnp.spacing(x)
Array([1.4012985e-45, 2.9802322e-08, 5.9604645e-08, 5.9604645e-08,
      1.1920929e-07], dtype=float32)

For x = 1, the spacing is equal to the eps value given by jax.numpy.finfo:

>>> x = jnp.float32(1)
>>> jnp.spacing(x) == jnp.finfo(x.dtype).eps
Array(True, dtype=bool)

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