(z, prec, rnd=round_fast)
return mpc_cos((b, mpf_neg(a)), prec, rnd)
Complex hyperbolic cosine. Computed as cosh(z) = cos(z*i).
Complex hyperbolic cosine. Computed as cosh(z) = cos(z*i).
Complex hyperbolic cosine . Computed as cosh ( z ) = cos ( z * i ) .
def mpc_cosh(z, prec, rnd=round_fast):
    """Complex hyperbolic cosine. Computed as cosh(z) = cos(z*i)."""
    a, b = z
    return mpc_cos((b, mpf_neg(a)), prec, rnd)
def mpc_cosh ( z , prec , rnd = round_fast ) : a , b = z return mpc_cos ( ( b , mpf_neg ( a ) ) , prec , rnd )