base::internal::ClampedLshOp< T, U, typename std::enable_if< std::is_integral< T >::value &&std::is_integral< U >::value >::type > Struct Template Reference

#include <clamped_math_impl.h>

Public Types
using	result_type = T

Static Public Member Functions
template<typename V = result_type>
static constexpr V	Do (T x, U shift)

Detailed Description

template<typename T, typename U>
struct base::internal::ClampedLshOp< T, U, typename std::enable_if< std::is_integral< T >::value &&std::is_integral< U >::value >::type >

Definition at line 191 of file clamped_math_impl.h.

Member Typedef Documentation

result_type

template<typename T , typename U >

using base::internal::ClampedLshOp< T, U, typename std::enable_if< std::is_integral< T >::value &&std::is_integral< U >::value >::type >::result_type = T

Definition at line 195 of file clamped_math_impl.h.

Member Function Documentation

Do()

template<typename T , typename U >

template<typename V = result_type>

static constexpr V base::internal::ClampedLshOp< T, U, typename std::enable_if< std::is_integral< T >::value &&std::is_integral< U >::value >::type >::Do ( T  x, U  shift  )

inlinestaticconstexpr

Definition at line 197 of file clamped_math_impl.h.

                                      {
    static_assert(!std::is_signed<U>::value, "Shift value must be unsigned.");
    if (BASE_NUMERICS_LIKELY(shift < std::numeric_limits<T>::digits)) {
      // Shift as unsigned to avoid undefined behavior.
      V result = static_cast<V>(as_unsigned(x) << shift);
      // If the shift can be reversed, we know it was valid.
      if (BASE_NUMERICS_LIKELY(result >> shift == x))
        return result;
    }
    return x ? CommonMaxOrMin<V>(IsValueNegative(x)) : 0;
  }

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The documentation for this struct was generated from the following file:

• third_party/accessibility/base/numerics/clamped_math_impl.h