26 Algorithms library [algorithms]

26.10 Generalized numeric operations [numeric.ops]

26.10.16 Midpoint [numeric.ops.midpoint]

🔗
template<class T> constexpr T midpoint(T a, T b) noexcept;
1
#
Constraints: T is an arithmetic type other than bool.
2
#
Returns: Half the sum of a and b.
If T is an integer type and the sum is odd, the result is rounded towards a.
3
#
Remarks: No overflow occurs.
If T is a floating-point type, at most one inexact operation occurs.
🔗
template<class T> constexpr T* midpoint(T* a, T* b);
4
#
Constraints: T is an object type.
5
#
Mandates: T is a complete type.
6
#
Preconditions: a and b point to, respectively, elements i and j of the same array object x.
[Note 1: 
As specified in [basic.compound], an object that is not an array element is considered to belong to a single-element array for this purpose and a pointer past the last element of an array of n elements is considered to be equivalent to a pointer to a hypothetical array element n for this purpose.
— end note]
7
#
Returns: A pointer to array element of x, where the result of the division is truncated towards zero.