libcruft-util/point.cpp
Danny Robson 34788756d2 build: don't use './' as an include prefix
GCC produces ODR error when including paths of the form './foo' and
'foo' in the same binary. Rather than managing duplication we just
universally pick the absolute form over the relative form.
2017-11-22 16:49:37 +11:00

88 lines
2.3 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 2011-2016 Danny Robson <danny@nerdcruft.net>
*/
#include "point.hpp"
#include "debug.hpp"
#include <cstdlib>
using util::point;
///////////////////////////////////////////////////////////////////////////////
template <size_t S, typename T>
util::vector<S,T>
util::point<S,T>::to (point<S,T> rhs) const
{
util::vector<S,T> out;
for (size_t i = 0; i < S; ++i)
out.data[i] = rhs.data[i] - this->data[i];
return out;
}
//-----------------------------------------------------------------------------
template <size_t S, typename T>
util::vector<S,T>
util::point<S,T>::from (point<S,T> rhs) const
{
util::vector<S,T> out;
for (size_t i = 0; i < S; ++i)
out.data[i] = this->data[i] - rhs.data[i];
return out;
}
///////////////////////////////////////////////////////////////////////////////
namespace util::debug {
template <size_t S, typename T>
struct validator<point<S,T>> {
static bool is_valid (const point<S,T> &p)
{
// ensure we don't have a nan anywhere
return std::all_of (p.cbegin (), p.cend (), [] (auto i) {
return !(std::is_floating_point<T>::value && std::isnan (i));
});
}
};
}
//-----------------------------------------------------------------------------
#define INSTANTIATE_S_T(S,T) \
template struct util::point<S,T>; \
template bool util::debug::is_valid (const point<S,T>&); \
template struct util::debug::validator<point<S,T>>;
#define INSTANTIATE(T) \
INSTANTIATE_S_T(1,T) \
INSTANTIATE_S_T(2,T) \
INSTANTIATE_S_T(3,T) \
INSTANTIATE_S_T(4,T)
INSTANTIATE(int16_t)
INSTANTIATE(int32_t)
INSTANTIATE(int64_t)
INSTANTIATE(uint16_t)
INSTANTIATE(uint32_t)
INSTANTIATE(uint64_t)
INSTANTIATE(float)
INSTANTIATE(double)