comparison armadillo-2.4.4/include/armadillo_bits/fn_trunc_log.hpp @ 0:8b6102e2a9b0

Armadillo Library

+// Copyright (C) 2008-2010 NICTA (www.nicta.com.au)
+// Copyright (C) 2008-2010 Conrad Sanderson
+// 
+// This file is part of the Armadillo C++ library.
+// It is provided without any warranty of fitness
+// for any purpose. You can redistribute this file
+// and/or modify it under the terms of the GNU
+// Lesser General Public License (LGPL) as published
+// by the Free Software Foundation, either version 3
+// of the License or (at your option) any later version.
+// (see http://www.opensource.org/licenses for more info)
+
+
+//! \addtogroup fn_trunc_log
+//! @{
+
+
+
+template<typename eT>
+inline 
+static
+typename arma_float_only<eT>::result
+trunc_log(const eT x)
+  {
+  if(std::numeric_limits<eT>::is_iec559)
+    {
+    if(x == std::numeric_limits<eT>::infinity())
+      {
+      return Math<eT>::log_max();
+      }
+    else
+      {
+      return (x <= eT(0)) ? Math<eT>::log_min() : std::log(x);
+      }
+    }
+  else
+    {
+    return std::log(x);
+    }
+  }
+
+
+
+template<typename eT>
+inline 
+static
+typename arma_integral_only<eT>::result
+trunc_log(const eT x)
+  {
+  return eT( trunc_log( double(x) ) );
+  }
+
+
+
+template<typename T>
+inline 
+static
+std::complex<T>
+trunc_log(const std::complex<T>& x)
+  {
+  return std::log(x);
+  }
+
+
+
+template<typename T1>
+arma_inline
+const eOp<T1, eop_trunc_log>
+trunc_log(const Base<typename T1::elem_type,T1>& A)
+  {
+  arma_extra_debug_sigprint();
+  
+  return eOp<T1, eop_trunc_log>(A.get_ref());
+  }
+
+
+
+template<typename T1>
+arma_inline
+const eOpCube<T1, eop_trunc_log>
+trunc_log(const BaseCube<typename T1::elem_type,T1>& A)
+  {
+  arma_extra_debug_sigprint();
+  
+  return eOpCube<T1, eop_trunc_log>(A.get_ref());
+  }
+
+
+
+//! @}