92 lines
2.7 KiB
C++
92 lines
2.7 KiB
C++
#include "types.hpp"
|
|
|
|
#include <type_traits>
|
|
|
|
using namespace std;
|
|
|
|
|
|
#define do_type_to_string(T) \
|
|
template <> std::string type_to_string <T> (void) { return #T; } \
|
|
template <> std::string type_to_string <const T> (void) { return "const " #T; }
|
|
|
|
do_type_to_string (float)
|
|
do_type_to_string (double)
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
/* Big endian doesn't need swapping */
|
|
template <typename T>
|
|
T hton (T val) {
|
|
static_assert (is_fundamental <T>(), "hton implementation assumes fundamental types");
|
|
static_assert (is_unsigned <T>(), "hton implementation does not handle signed");
|
|
return val;
|
|
}
|
|
|
|
template <typename T>
|
|
T ntoh (T val) {
|
|
static_assert (is_fundamental <T>(), "ntoh implementation assumes fundamental types");
|
|
static_assert (is_unsigned <T>(), "ntoh implementation does not handle signed");
|
|
return val;
|
|
}
|
|
|
|
template <> uint8_t hton ( uint8_t);
|
|
template <> uint16_t hton (uint16_t);
|
|
template <> uint32_t hton (uint32_t);
|
|
template <> uint64_t hton (uint64_t);
|
|
|
|
template <> uint8_t ntoh ( uint8_t);
|
|
template <> uint16_t ntoh (uint16_t);
|
|
template <> uint32_t ntoh (uint32_t);
|
|
template <> uint64_t ntoh (uint64_t);
|
|
|
|
#else
|
|
|
|
static void
|
|
byte_swap (uint8_t *restrict dst, uint8_t *restrict src, size_t len) {
|
|
for (unsigned int i = 0; i < len; ++i)
|
|
dst[len - i - 1] = src[i];
|
|
}
|
|
|
|
|
|
template <typename T>
|
|
T
|
|
hton (T i) {
|
|
// Unsure if this will really be sensible for non-intrinsic types, or types larger than 8 bytes.
|
|
static_assert (is_fundamental <T>::value, "hton implementation assumes fundamental types");
|
|
static_assert (is_unsigned <T>::value, "hton implementation does not handle signed");
|
|
|
|
T swapped;
|
|
byte_swap (reinterpret_cast <uint8_t*>(&swapped),
|
|
reinterpret_cast <uint8_t*>(&i),
|
|
sizeof (T));
|
|
return swapped;
|
|
}
|
|
|
|
|
|
template <typename T>
|
|
T
|
|
ntoh (T i) {
|
|
// Unsure if this will really be sensible for non-intrinsic types, or types larger than 8 bytes.
|
|
static_assert (is_fundamental <T>::value, "ntoh implementation assumes fundamental types");
|
|
static_assert (is_unsigned <T>::value, "ntoh implementation does not handle signed");
|
|
|
|
T swapped;
|
|
byte_swap (reinterpret_cast <uint8_t*>(&swapped),
|
|
reinterpret_cast <uint8_t*>(&i),
|
|
sizeof (T));
|
|
return swapped;
|
|
}
|
|
|
|
template <> uint8_t hton (uint8_t i) { return i; }
|
|
template <> uint8_t ntoh (uint8_t i) { return i; }
|
|
|
|
template uint16_t ntoh<uint16_t> (uint16_t);
|
|
template uint32_t ntoh<uint32_t> (uint32_t);
|
|
template uint64_t ntoh<uint64_t> (uint64_t);
|
|
|
|
template uint16_t hton<uint16_t> (uint16_t);
|
|
template uint32_t hton<uint32_t> (uint32_t);
|
|
template uint64_t hton<uint64_t> (uint64_t);
|
|
|
|
#endif
|
|
|