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Only implement the lgamma, erf, and erfc functions when using a compiler compliant with the C99 specification.

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This commit is contained in:
Benoit Steiner
2015-12-10 13:09:49 -08:00
parent 53b196aa5f
commit 48877a6933
2 changed files with 28 additions and 19 deletions
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43
Eigen/src/Core/SpecialFunctions.h
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@@ -28,6 +28,13 @@ struct lgamma_impl
}
};
template<typename Scalar>
struct lgamma_retval
{
typedef Scalar type;
};
#ifdef EIGEN_HAS_C99_MATH
template<>
struct lgamma_impl<float>
{
@@ -41,12 +48,7 @@ struct lgamma_impl<double>
EIGEN_DEVICE_FUNC
static EIGEN_STRONG_INLINE double run(const double& x) { return ::lgamma(x); }
};
template<typename Scalar>
struct lgamma_retval
{
typedef Scalar type;
};
#endif
/****************************************************************************
* Implementation of erf *
@@ -63,6 +65,13 @@ struct erf_impl
}
};
template<typename Scalar>
struct erf_retval
{
typedef Scalar type;
};
#ifdef EIGEN_HAS_C99_MATH
template<>
struct erf_impl<float>
{
@@ -76,12 +85,7 @@ struct erf_impl<double>
EIGEN_DEVICE_FUNC
static EIGEN_STRONG_INLINE double run(const double& x) { return ::erf(x); }
};
template<typename Scalar>
struct erf_retval
{
typedef Scalar type;
};
#endif // EIGEN_HAS_C99_MATH
/***************************************************************************
* Implementation of erfc *
@@ -98,6 +102,13 @@ struct erfc_impl
}
};
template<typename Scalar>
struct erfc_retval
{
typedef Scalar type;
};
#ifdef EIGEN_HAS_C99_MATH
template<>
struct erfc_impl<float>
{
@@ -111,15 +122,11 @@ struct erfc_impl<double>
EIGEN_DEVICE_FUNC
static EIGEN_STRONG_INLINE double run(const double x) { return ::erfc(x); }
};
template<typename Scalar>
struct erfc_retval
{
typedef Scalar type;
};
#endif // EIGEN_HAS_C99_MATH
} // end namespace internal
namespace numext {
template<typename Scalar>