base::internal::ClampedNegFastOp< T > Struct Template Reference

#include <safe_math_clang_gcc_impl.h>

Public Member Functions
	__attribute__ ((always_inline)) static T Do(T value)

Static Public Member Functions
static constexpr T	Do (T)

Static Public Attributes
static const bool	is_supported = std::is_signed<T>::value

Detailed Description

template<typename T>
struct base::internal::ClampedNegFastOp< T >

Definition at line 138 of file safe_math_clang_gcc_impl.h.

Member Function Documentation

__attribute__()

template<typename T >

base::internal::ClampedNegFastOp< T >::__attribute__ ( (always_inline)  )

inline

Definition at line 140 of file safe_math_clang_gcc_impl.h.

                                                      {
    // Use this when there is no assembler path available.
    if (!ClampedSubFastAsmOp<T, T>::is_supported) {
      T result;
      return !__builtin_sub_overflow(T(0), value, &result)
                 ? result
                 : std::numeric_limits<T>::max();
    }
 
    // Fallback to the normal subtraction path.
    return ClampedSubFastOp<T, T>::template Do<T>(T(0), value);
  }

Do()

template<typename T >

static constexpr T base::internal::ClampedNegFastOp< T >::Do ( T  )

inlinestaticconstexpr

Definition at line 104 of file safe_math_shared_impl.h.

                           {
    // Force a compile failure if instantiated.
    return CheckOnFailure::template HandleFailure<T>();
  }

Member Data Documentation

is_supported

template<typename T >

static const bool base::internal::ClampedNegFastOp< T >::is_supported = std::is_signed<T>::value

static

Definition at line 139 of file safe_math_clang_gcc_impl.h.

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

• third_party/accessibility/base/numerics/safe_math_clang_gcc_impl.h
• third_party/accessibility/base/numerics/safe_math_shared_impl.h