Remove explicit casts from Eigen::half and Eigen::bfloat16 to bool

Both, Eigen::half and Eigen::Bfloat16 are implicitly convertible to
float and can hence be converted to bool via the conversion chain

  Eigen::{half,bfloat16} -> float -> bool

We thus remove the explicit cast operator to bool.

1 files changed, 0 insertions, 8 deletions

diff --git a/Eigen/src/Core/arch/Default/BFloat16.h b/Eigen/src/Core/arch/Default/BFloat16.h
index 6f81fe382..351f451a3 100644
--- a/Eigen/src/Core/arch/Default/BFloat16.h
+++ b/Eigen/src/Core/arch/Default/BFloat16.h
@@ -82,14 +82,6 @@ struct bfloat16 : public bfloat16_impl::bfloat16_base {
   EIGEN_DEVICE_FUNC operator float() const {  // NOLINT: Allow implicit conversion to float, because it is lossless.
     return bfloat16_impl::bfloat16_to_float(*this);
   }
-
-#if EIGEN_HAS_CXX11
-  EIGEN_DEVICE_FUNC EIGEN_EXPLICIT_CAST(bool) const {
-    // +0.0 and -0.0 become false, everything else becomes true.
-    return (value & 0x7fff) != 0;
-  }
-#endif
-
 };
 } // namespace Eigen