Function pisinf

include/Eigen/src/Core/GenericPacketMath.h:1007–1011

/** \internal \returns isinf(a) */
template <typename Packet>
EIGEN_DEVICE_FUNC inline Packet pisinf(const Packet& a) {
  using Scalar = typename unpacket_traits<Packet>::type;
  constexpr Scalar inf = NumTraits<Scalar>::infinity();
  return pcmp_eq(pabs(a), pset1<Packet>(inf));
}

/** \internal \returns the sine of \a a (coeff-wise) */
template <typename Packet>