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definiert in Header

<algorithm>

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<T> ilist);

 (3) (seit C++11)

template< class T, class Compare > T min( std::initializer_list<T> ilist, Compare comp );

 (4) (seit C++11)

1-2)

Liefert den kleineren der beiden Werte.

Original:

Returns the smaller of the two values.

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3-4)

Liefert den kleinsten der Werte der Initialisierungsliste ilist.

Original:

Returns the smallest of the values in initializer list ilist.

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Die Versionen (1,3) verwenden operator<, um die Werte zu vergleichen, die Versionen (2, 4) verwenden die angegebene Vergleichsfunktion comp.

Original:

The (1,3) versions use operator< to compare the values, the (2,4) versions use the given comparison function comp.

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Parameter

a, b -

die zu vergleichenden Werte

Original:

the values to compare

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ilist -

Initialisierungsliste mit den zu vergleichenden Werten

Original:

initializer list with the values to compare

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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:

bool cmp(const Type1 &a, const Type2 &b);

The signature does not need to have const &, but the function must not modify the objects passed to it.
The types Type1 and Type2 must be such that an object of type T can be implicitly converted to both of them. ​

Type requirements
-T must meet the requirements of LessThanComparable. for the overloads (1) and (3)
-T must meet the requirements of CopyConstructible. for the overloads (3) and (4)

Rückgabewert

1-2)

Der kleinere der a und b. Wenn die Werte gleichwertig sind, kehrt a .

Original:

The smaller of a and b. If the values are equivalent, returns a.

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3-4)

Der kleinste Wert in ilist. Wenn mehrere Werte entspricht der kleinsten sind, gibt die linke solcher Wert .

Original:

The smallest value in ilist. If several values are equivalent to the smallest, returns the leftmost such value.

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Komplexität

1-2)

Constant

Original:

Constant

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3-4)

Linear in ilist.size()

Original:

Linear in ilist.size()

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Mögliche Implementierung

First version 
template<class T> 
const T& min(const T& a, const T& b)
{
    return (a < b) ? a : b;
}
Second version 
template<class T, class Compare> 
const T& min(const T& a, const T& b, Compare comp)
{
    return (comp(a, b)) ? a : b;
}
Third version 
template<class T>
T min( std::initializer_list<T> ilist)
{
    return *std::min_element(ilist.begin(), ilist.end());
}
Fourth version 
template<class T, class Compare>
T min(std::initializer_list<T> ilist, Compare comp)
{
    return *std::min_element(ilist.begin(), ilist.end(), comp);
}

Beispiel

#include <algorithm>
#include <iostream>
 
int main()
{
    std::cout << "smaller of 1 and 9999: " << std::min(1, 9999) << '\n';
    std::cout << "smaller of 'a' and 'b': " << std::min('a', 'b') << '\n';
    std::cout << "smaller of 3.5 and 2.5: " << std::min(3.5, 2.5) << '\n';
}

Output: 

smaller of 1 and 9999: 1
smaller of 'a' and 'b': a
smaller of 3.5 and 2.5: 2.5

Siehe auch

liefert den größeren der beiden Elemente

Original:

returns the larger of two elements

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(Funktions-Template) [edit]

(C++11)

gibt den größeren und den kleineren der beiden Elemente

Original:

returns the larger and the smaller of two elements

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(Funktions-Template) [edit]

gibt das kleinste Element in einem Bereich

Original:

returns the smallest element in a range

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(Funktions-Template) [edit]