expm1

rbc.stdlib.elementwise_functions.expm1(x)

Calculates an implementation-dependent approximation to exp(x)-1, having domain [-infinity,

+infinity] and codomain [-1, +infinity], for each element x_i of the input array x.

>>> from rbc.stdlib import array_api
>>> @heavydb('double[](double[])')
... def array_api_expm1(x):
...     return array_api.expm1(x)
>>> array_api_expm1(np.array([1.0, np.pi, np.e])).execute()
array([ 1.7182819, 22.140692 , 14.154263 ], dtype=float32)

Array-API ‘expm1’ doc