std::min
From Cppreference
Defined in header <algorithm>
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template< class T >
const T& min( const T& a, const T& b ); |
(1) | |
template< class T, class Compare >
const T& min( const T& a, const T& b, Compare comp ); |
(2) | |
template< class T >
T min( std::initializer_list ilist); |
(3) | (C++11 feature) |
template< class T, class Compare >
T min( std::initializer_list ilist, Compare comp ); |
(4) | (C++11 feature) |
1-2) Returns the smaller of the two values.
3-4) Returns the smallest of the values in initializer list ilist.
The (1,3) versions use operator< to compare the values, the (2,4) versions use the given comparison function comp.
Contents |
[edit] Parameters
a, b | - | the values to compare | |||||||||
ilist | - | initializer list with the values to compare | |||||||||
cmp | - | comparison function which returns true if if a is less than b. The signature of the comparison function should be equivalent to the following:
The signature does not need to have const &, but the function must not modify the objects passed to it. |
[edit] Return value
1-2) The smaller of a and b. If the values are equivalent, returns a.
3-4) The smallest value in ilist. If several values are equivalent to the smallest, returns the leftmost such value.
[edit] Complexity
1-2) Constant
3-4) Linear in ilist.size()
[edit] Equivalent function
First version |
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template<class T> const T& max(const T& a, const T& b) { return (a < b) ? a : b; } |
Second version |
template<class T, class Compare> const T& max(const T& a, const T& b, Compare comp) { return (comp(a, b)) ? a : b; } |
Third version |
template< class T > T min( std::initializer_list ilist) { return *std::min_element(ilist.begin(), ilist.end()); } |
Fourth version |
template< class T, class Compare > T min( std::initializer_list ilist, Compare comp ) { return *std::min_element(ilist.begin(), ilist.end(), comp); } |
[edit] Example
Output:
smaller of 1 and 9999: 1 smaller of 'a' and 'b': a smaller of 3.5 and 2.5: 2.5
This section is incomplete |
[edit] See also
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returns the larger of two elements (function template) |
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returns the larger and the smaller of two elements (function template) |
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returns the smallest element in a range (function template) |