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Add special functions to Eigen: lgamma, erf, erfc.

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Includes CUDA support and unit tests.
This commit is contained in:
Eugene Brevdo
2015-12-07 15:24:49 -08:00
parent 7dfe75f445
commit fa4f933c0f
14 changed files with 513 additions and 1 deletions
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44
Eigen/src/plugins/ArrayCwiseUnaryOps.h
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@@ -21,6 +21,9 @@ typedef CwiseUnaryOp<internal::scalar_atan_op<Scalar>, const Derived> AtanReturn
typedef CwiseUnaryOp<internal::scalar_tanh_op<Scalar>, const Derived> TanhReturnType;
typedef CwiseUnaryOp<internal::scalar_sinh_op<Scalar>, const Derived> SinhReturnType;
typedef CwiseUnaryOp<internal::scalar_cosh_op<Scalar>, const Derived> CoshReturnType;
typedef CwiseUnaryOp<internal::scalar_lgamma_op<Scalar>, const Derived> LgammaReturnType;
typedef CwiseUnaryOp<internal::scalar_erf_op<Scalar>, const Derived> ErfReturnType;
typedef CwiseUnaryOp<internal::scalar_erfc_op<Scalar>, const Derived> ErfcReturnType;
typedef CwiseUnaryOp<internal::scalar_pow_op<Scalar>, const Derived> PowReturnType;
typedef CwiseUnaryOp<internal::scalar_square_op<Scalar>, const Derived> SquareReturnType;
typedef CwiseUnaryOp<internal::scalar_cube_op<Scalar>, const Derived> CubeReturnType;
@@ -302,6 +305,47 @@ cosh() const
return CoshReturnType(derived());
}
/** \returns an expression of the coefficient-wise ln(|gamma(*this)|).
*
* Example: \include Cwise_lgamma.cpp
* Output: \verbinclude Cwise_lgamma.out
*
* \sa cos(), sin(), tan()
*/
inline const CwiseUnaryOp<internal::scalar_lgamma_op<Scalar>, Derived>
lgamma() const
{
return LgammaReturnType(derived());
}
/** \returns an expression of the coefficient-wise Gauss error
* function of *this.
*
* Example: \include Cwise_erf.cpp
* Output: \verbinclude Cwise_erf.out
*
* \sa cos(), sin(), tan()
*/
inline const CwiseUnaryOp<internal::scalar_erf_op<Scalar>, Derived>
erf() const
{
return ErfReturnType(derived());
}
/** \returns an expression of the coefficient-wise Complementary error
* function of *this.
*
* Example: \include Cwise_erfc.cpp
* Output: \verbinclude Cwise_erfc.out
*
* \sa cos(), sin(), tan()
*/
inline const CwiseUnaryOp<internal::scalar_erfc_op<Scalar>, Derived>
erfc() const
{
return ErfcReturnType(derived());
}
/** \returns an expression of the coefficient-wise power of *this to the given exponent.
*
* This function computes the coefficient-wise power. The function MatrixBase::pow() in the