FloatingPointHelpers::LeadingZerosPortability Namespace Reference

Functions
template<class T>
static constexpr unsigned int	count_leading_zeros (const T num)

Function Documentation

count_leading_zeros()

template<class T>

constexpr unsigned int FloatingPointHelpers::LeadingZerosPortability::count_leading_zeros ( const T num )

inlinestaticconstexpr

Definition at line 76 of file FPHelpers.h.

    {
      T probe = T(1) << (sizeof(T) * CHAR_BIT - 1);
      unsigned int ret = 0;
      while ((num & probe) == 0 && probe)
        {
          ++ret;
          probe >>= 1;
        }
      return ret;
    }