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Simplify

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This commit is contained in:
Rui Ueyama 2022-10-14 15:27:25 +08:00
parent d3dc5e31eb
commit dd4048b7c4
1 changed files with 40 additions and 38 deletions
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78
inttypes.h
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@ -63,28 +63,29 @@ public:
LittleEndian(T x) { *this = x; }
operator T() const {
T x;
memcpy(&x, val, sizeof(T));
if constexpr (std::endian::native == std::endian::big)
x = bswap(x);
return x;
if constexpr (sizeof(T) == SIZE) {
T x;
memcpy(&x, val, sizeof(T));
if constexpr (std::endian::native == std::endian::big)
x = bswap(x);
return x;
} else {
static_assert(SIZE == 3);
return (val[2] << 16) | (val[1] << 8) | val[0];
}
}
LittleEndian &operator=(T x) {
if constexpr (std::endian::native == std::endian::big)
x = bswap(x);
memcpy(val, &x, sizeof(T));
return *this;
}
operator T() const requires (SIZE == 3) {
return (val[2] << 16) | (val[1] << 8) | val[0];
}
LittleEndian &operator=(T x) requires (SIZE == 3) {
val[2] = x >> 16;
val[1] = x >> 8;
val[0] = x;
if constexpr (sizeof(T) == SIZE) {
if constexpr (std::endian::native == std::endian::big)
x = bswap(x);
memcpy(val, &x, sizeof(T));
} else {
static_assert(SIZE == 3);
val[2] = x >> 16;
val[1] = x >> 8;
val[0] = x;
}
return *this;
}
@ -143,28 +144,29 @@ public:
BigEndian(T x) { *this = x; }
operator T() const {
T x;
memcpy(&x, val, sizeof(T));
if constexpr (std::endian::native == std::endian::little)
x = bswap(x);
return x;
if constexpr (sizeof(T) == SIZE) {
T x;
memcpy(&x, val, sizeof(T));
if constexpr (std::endian::native == std::endian::little)
x = bswap(x);
return x;
} else {
static_assert(SIZE == 3);
return (val[0] << 16) | (val[1] << 8) | val[2];
}
}
BigEndian &operator=(T x) {
if constexpr (std::endian::native == std::endian::little)
x = bswap(x);
memcpy(val, &x, sizeof(T));
return *this;
}
operator T() const requires (SIZE == 3) {
return (val[0] << 16) | (val[1] << 8) | val[2];
}
BigEndian &operator=(T x) requires (SIZE == 3) {
val[0] = x >> 16;
val[1] = x >> 8;
val[2] = x;
if constexpr (sizeof(T) == SIZE) {
if constexpr (std::endian::native == std::endian::little)
x = bswap(x);
memcpy(val, &x, sizeof(T));
} else {
static_assert(SIZE == 3);
val[0] = x >> 16;
val[1] = x >> 8;
val[2] = x;
}
return *this;
}