asinh returns incorrect results at complex infinities #749
Description
As in the title.
Reproducer (using mpmath 1.3.0):
>>> mpmath.asinh(mpmath.mpc(mpmath.inf, 0))
mpc(real='0.0', imag='0.0')Expected result is mpc(real='+inf', imag='0.0') as in
>>> mpmath.asinh(mpmath.inf)
mpf('+inf')Another reproducer:
>>> mpmath.asinh(mpmath.mpc(mpmath.inf, 1))
mpc(real='0.0', imag='0.0')Expected result is mpc(real='+inf', imag='0.0') per https://en.cppreference.com/w/cpp/numeric/complex/asinh