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// | |
// rescale.cpp | |
// CplusplusPractice | |
// | |
// Created by masai on 2015/05/20. | |
// Copyright (c) 2015年 masai. All rights reserved. | |
// | |
#include <iostream> | |
template<typename T, typename U> | |
U rescale(T x, T src_min, T src_max, U dst_min, U dst_max) { | |
U value = static_cast<U>(((x - src_min) * (dst_max - dst_min)) / (src_max - src_min) + dst_min); | |
return std::min(dst_max, std::max(value, dst_min)); | |
} | |
int main(int argc, const char * argv[]) { | |
int a = 10; | |
int b = 1; | |
int c = 100; | |
int d = 300; | |
int e = 500; | |
int result = rescale(a, b, c, d, e); | |
std::cout << result << std::endl; | |
} | |
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