Eigen::numext Namespace Reference

Functions
template<>
EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE float	sqrt (const float &x)
template<>
EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE double	sqrt (const double &x)
template<typename Scalar >
EIGEN_DEVICE_FUNC	EIGEN_MATHFUNC_RETVAL (lgamma, Scalar) lgamma(const Scalar &x)
template<typename Scalar >
EIGEN_DEVICE_FUNC	EIGEN_MATHFUNC_RETVAL (digamma, Scalar) digamma(const Scalar &x)
template<typename Scalar >
EIGEN_DEVICE_FUNC	EIGEN_MATHFUNC_RETVAL (erf, Scalar) erf(const Scalar &x)
template<typename Scalar >
EIGEN_DEVICE_FUNC	EIGEN_MATHFUNC_RETVAL (erfc, Scalar) erfc(const Scalar &x)
template<typename T >
EIGEN_STRONG_INLINE void	swap (T &a, T &b)
template<typename T >
T	div_ceil (const T &a, const T &b)

---

Function Documentation

template<typename T >

T Eigen::numext::div_ceil	(	const T &	a,
		const T &	b
	)

Definition at line 408 of file Meta.h.

{
  return (a+b-1) / b;
}

template<typename Scalar >

EIGEN_DEVICE_FUNC Eigen::numext::EIGEN_MATHFUNC_RETVAL	(	lgamma	,
		Scalar
	)		const [inline]

Definition at line 409 of file SpecialFunctions.h.

                            {
  return EIGEN_MATHFUNC_IMPL(lgamma, Scalar)::run(x);
}

template<typename Scalar >

EIGEN_DEVICE_FUNC Eigen::numext::EIGEN_MATHFUNC_RETVAL	(	digamma	,
		Scalar
	)		const [inline]

Definition at line 415 of file SpecialFunctions.h.

                             {
  return EIGEN_MATHFUNC_IMPL(digamma, Scalar)::run(x);
}

template<typename Scalar >

EIGEN_DEVICE_FUNC Eigen::numext::EIGEN_MATHFUNC_RETVAL	(	erf	,
		Scalar
	)		const [inline]

Definition at line 421 of file SpecialFunctions.h.

                         {
  return EIGEN_MATHFUNC_IMPL(erf, Scalar)::run(x);
}

template<typename Scalar >

EIGEN_DEVICE_FUNC Eigen::numext::EIGEN_MATHFUNC_RETVAL	(	erfc	,
		Scalar
	)		const [inline]

Definition at line 427 of file SpecialFunctions.h.

                          {
  return EIGEN_MATHFUNC_IMPL(erfc, Scalar)::run(x);
}

template<>

EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE float Eigen::numext::sqrt

(

const float &

x

)

Definition at line 574 of file arch/SSE/MathFunctions.h.

{
  return internal::pfirst(internal::Packet4f(_mm_sqrt_ss(_mm_set_ss(x))));
}

template<>

EIGEN_DEVICE_FUNC EIGEN_ALWAYS_INLINE double Eigen::numext::sqrt

(

const double &

x

)

Definition at line 581 of file arch/SSE/MathFunctions.h.

{
#if EIGEN_COMP_GNUC_STRICT
  // This works around a GCC bug generating poor code for _mm_sqrt_pd
  // See https://bitbucket.org/eigen/eigen/commits/14f468dba4d350d7c19c9b93072e19f7b3df563b
  return internal::pfirst(internal::Packet2d(__builtin_ia32_sqrtsd(_mm_set_sd(x))));
#else
  return internal::pfirst(internal::Packet2d(_mm_sqrt_pd(_mm_set_sd(x))));
#endif
}

template<typename T >

EIGEN_STRONG_INLINE void Eigen::numext::swap	(	T &	a,
		T &	b
	)

Definition at line 396 of file Meta.h.

{ std::swap(a,b); }