diff options
Diffstat (limited to 'Eigen/src/Core/IO.h')
| -rw-r--r-- | Eigen/src/Core/IO.h | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/Eigen/src/Core/IO.h b/Eigen/src/Core/IO.h index dfd9097cc..94e00f58b 100644 --- a/Eigen/src/Core/IO.h +++ b/Eigen/src/Core/IO.h @@ -125,32 +125,18 @@ DenseBase<Derived>::format(const IOFormat& fmt) const namespace internal { -template<typename Scalar, bool IsInteger> -struct significant_decimals_default_impl -{ - typedef typename NumTraits<Scalar>::Real RealScalar; - static inline int run() - { - using std::ceil; - using std::log; - return cast<RealScalar,int>(ceil(-log(NumTraits<RealScalar>::epsilon())/log(RealScalar(10)))); - } -}; - +// NOTE: This helper is kept for backward compatibility with previous code specializing +// this internal::significant_decimals_impl structure. In the future we should directly +// call digits10() which has been introduced in July 2016 in 3.3. template<typename Scalar> -struct significant_decimals_default_impl<Scalar, true> +struct significant_decimals_impl { static inline int run() { - return 0; + return NumTraits<Scalar>::digits10(); } }; -template<typename Scalar> -struct significant_decimals_impl - : significant_decimals_default_impl<Scalar, NumTraits<Scalar>::IsInteger> -{}; - /** \internal * print the matrix \a _m to the output stream \a s using the output format \a fmt */ template<typename Derived> |