dtype.h

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#ifndef LIBPRESSIO_DTYPE_CPP
#define LIBPRESSIO_DTYPE_CPP
#include <pressio_dtype.h>
#include <std_compat/type_traits.h>
#include <cstdint>
#include <stdint.h>
 
namespace impl {
  template <class T, class... Ts>
  struct is_one_of : public compat::disjunction<std::is_same<T,Ts>...> {
  };
}
 
constexpr pressio_dtype pressio_size_type() {
    static_assert(sizeof(size_t) <= 8, "unexpected type");
    return (
        (sizeof(size_t) == 8 && std::is_unsigned<size_t>::value) ? pressio_uint64_dtype :
        (sizeof(size_t) == 8 && !std::is_unsigned<size_t>::value) ? pressio_int64_dtype :
        (sizeof(size_t) == 4 && std::is_unsigned<size_t>::value) ? pressio_uint32_dtype :
        (sizeof(size_t) == 4 && !std::is_unsigned<size_t>::value) ? pressio_int32_dtype :
        (sizeof(size_t) == 2 && std::is_unsigned<size_t>::value) ? pressio_uint16_dtype :
        (sizeof(size_t) == 2 && !std::is_unsigned<size_t>::value) ? pressio_int16_dtype :
        pressio_uint64_dtype
    );
}
 
template <class T>
constexpr pressio_dtype pressio_dtype_from_type() {
  static_assert(impl::is_one_of<T,double, float, bool, int8_t, int16_t, int32_t, int64_t, uint8_t, uint16_t, uint32_t, uint64_t, size_t, char, unsigned char>::value, 
      "unexpected type");
  return (std::is_same<T, double>::value ? pressio_double_dtype :
      std::is_same<T, float>::value ? pressio_float_dtype :
      std::is_same<T, int64_t>::value ? pressio_int64_dtype :
      std::is_same<T, int32_t>::value ? pressio_int32_dtype :
      std::is_same<T, int16_t>::value ? pressio_int16_dtype :
      std::is_same<T, int8_t>::value ? pressio_int8_dtype :
      std::is_same<T, size_t>::value ? pressio_size_type() :
      std::is_same<T, uint64_t>::value ? pressio_uint64_dtype :
      std::is_same<T, uint32_t>::value ? pressio_uint32_dtype :
      std::is_same<T, uint16_t>::value ? pressio_uint16_dtype :
      std::is_same<T, uint8_t>::value ? pressio_uint8_dtype :
      std::is_same<T, bool>::value ? pressio_bool_dtype :
      pressio_byte_dtype
      );
}
 
#endif /* end of include guard: LIBPRESSIO_DTYPE_CPP */