libcruft-util/range.ipp

39 lines
1.1 KiB
C++

/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2010-2015 Danny Robson <danny@nerdcruft.net>
*/
#ifdef __UTIL_RANGE_IPP
#error
#else
#define __UTIL_RANGE_IPP
#endif
#include <type_traits>
//-----------------------------------------------------------------------------
namespace util {
template <typename T>
template <typename U>
U
range<T>::normalise (T val) const {
static_assert (std::is_floating_point<U>::value,
"normalise isn't implemented for integer types");
return static_cast<U> (val - min) /
static_cast<U> (max - min);
}
}