jax.numpy.arange(start, stop=None, step=None, dtype=None)[source]#

Return evenly spaced values within a given interval.

LAX-backend implementation of numpy.arange().


Using arange with the step argument can lead to precision errors, especially with lower-precision data types like fp8 and bf16. For more details, see the docstring of numpy.arange(). To avoid precision errors, consider using an expression like (jnp.arange(-600, 600) * .01).astype(jnp.bfloat16) to generate a sequence in a higher precision and then convert it to the desired lower precision.

Original docstring below.

arange can be called with a varying number of positional arguments:

  • arange(stop): Values are generated within the half-open interval [0, stop) (in other words, the interval including start but excluding stop).

  • arange(start, stop): Values are generated within the half-open interval [start, stop).

  • arange(start, stop, step) Values are generated within the half-open interval [start, stop), with spacing between values given by step.

For integer arguments the function is roughly equivalent to the Python built-in range, but returns an ndarray rather than a range instance.

When using a non-integer step, such as 0.1, it is often better to use numpy.linspace.

See the Warning sections below for more information.

  • start (integer or real, optional) – Start of interval. The interval includes this value. The default start value is 0.

  • stop (integer or real) – End of interval. The interval does not include this value, except in some cases where step is not an integer and floating point round-off affects the length of out.

  • step (integer or real, optional) – Spacing between values. For any output out, this is the distance between two adjacent values, out[i+1] - out[i]. The default step size is 1. If step is specified as a position argument, start must also be given.

  • dtype (dtype, optional) – The type of the output array. If dtype is not given, infer the data type from the other input arguments.


arange – Array of evenly spaced values.

For floating point arguments, the length of the result is ceil((stop - start)/step). Because of floating point overflow, this rule may result in the last element of out being greater than stop.

Return type: