xp.arange(n) in __truediv__ is not array-api compatible

Description

Lines such as the below in corr are not array-api compatible as xp.arange(n) produces an integer dtype which is not allowed in __truediv__.

a = (2 * xp.arange(n) + 1) / (4 * xp.pi) * cl

TypeError: Only floating-point dtypes are allowed in __truediv__

I just ran into this too

Can change to (2.0 * xp.arange(n) + 1) / (4 * xp.pi) * cl?

Or is xp.arange(n, float) a generic idiom to get a floating point range?