至少三个值 [英] TAking the minimum of three values

问题描述

我需要找到至少三个浮点值。这样做最有效的方法是什么？有人可以和我分享#define宏或

这样做吗？谢谢


Sona

解决方案

" Sona" ; <所以********** @ nospam.com>在留言中写道

新闻：3f ******** @ clarion.carno.net.au ...

我需要找到至少三个浮点数价值..最有效的方法是什么？有人可以和我分享#define宏或
这样做吗？谢谢

Sona

x = min（a，min（b，c））;


-Howard

Sona写道：

我需要找到至少三个浮点值..什么这将是最有效的方式吗？有人可以和我分享#define宏或
这样做吗？谢谢

在C ++中

#include< algoritm>


double min3（双a，双b，双c）{

返回std :: min（a，std :: min（b，c））;

}

> #include< algoritm>

double min3（double a，double b，double c）{
return std :: min（a，std :: min（b， c））;
}

为了保持min的模板化方面，你甚至可以写出
命名空间

{

模板< class T>

T& min（T const& a，T const& b，T const& c）

{

return min（a，min（b，c））;

}

}


就像std :: min适用于任何类型，并且有2或3个参数

I need to find a minimum of three float values.. what would be the most
efficient way of doing this? Can someone please share a #define macro or
something with me for doing this? Thanks

Sona

解决方案

"Sona" <so**********@nospam.com> wrote in message
news:3f********@clarion.carno.net.au...

I need to find a minimum of three float values.. what would be the most
efficient way of doing this? Can someone please share a #define macro or
something with me for doing this? Thanks

Sona

x = min( a, min( b, c ) );

-Howard

Sona wrote:

I need to find a minimum of three float values.. what would be the most
efficient way of doing this? Can someone please share a #define macro or
something with me for doing this? Thanks

In C++

#include <algoritm>

double min3(double a, double b, double c) {
return std::min(a, std::min(b, c));
}

> #include <algoritm>

double min3(double a, double b, double c) {
return std::min(a, std::min(b, c));
}

To keep the templated aspect of min, you could even write

namespace
{
template<class T>
T& min(T const& a, T const& b, T const& c)
{
return min(a, min(b,c));
}
}

Like that std::min works with any type, and with 2 or 3 arguments

这篇关于至少三个值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！