arrayops.h

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// Copyright 2017-2020, Schlumberger
//
// 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.
 
#pragma once
 
#include <array>
#include <ostream>
 
namespace InternalZGY { namespace ArrayOps {
#if 0
}}
#endif
 
// Operations on arrays. TODO-Low ugly code smell.
// I probably need to make a dedicated "index3_t" type
// that will support these operators.
 
template<typename T, std::size_t N>
static std::array<T,N> operator+(const std::array<T,N>& a, const std::array<T,N>& b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] + b[dim];
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator-(const std::array<T,N>& a, const std::array<T,N>& b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] - b[dim];
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator*(const std::array<T,N>& a, const std::array<T,N>& b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] * b[dim];
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator/(const std::array<T,N>& a, const std::array<T,N>& b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] / b[dim];
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator+(const std::array<T,N>& a, T b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] + b;
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator-(const std::array<T,N>& a, T b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] - b;
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator*(const std::array<T,N>& a, T b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] * b;
  return result;
}
 
template<typename T, std::size_t N>
static std::array<T,N> operator/(const std::array<T,N>& a, T b)
{
  std::array<T,N> result;
  for (std::size_t dim=0; dim<N; ++dim)
    result[dim] = a[dim] / b;
  return result;
}
 
}} // namespace
 
namespace InternalZGY { namespace Formatters {
template<typename T, std::size_t N>
static std::ostream& operator<<(std::ostream& os, const std::array<T,N>& a)
{
  os << "(";
  for (std::size_t dim=0; dim<N; ++dim)
    os << a[dim] << (dim==N-1 ? "" : ", ");
  os << ")";
  return os;
}
 
}} // namespace