|
| template<class T> |
| constexpr auto | utl::bit_size () |
| | Size of object in terms of bits.
|
| template<class T> |
| constexpr T | utl::bit_full () |
| | Integer with all bits set to 1.
|
| template<class T> |
| constexpr T | utl::bit_wrap () |
| | Wrap around mask for power of two number of bits within given integer type. For example: [ bit_wrap<uint8_t> = 8 - 1 = 0b111 ] [ bit_wrap<uint16_t> = 16 - 1 = 0b1111 ] [ bit_wrap<uint32_t> = 32 - 1 = 0b11111 ].
|
| template<class T> |
| constexpr auto | utl::bit_shft () |
| | Number of bits to fit bit_wrap<T> result, in other words bit width of (sizeof(T) * 8 - 1). For example: [ bit_shft<uint8_t> = bit_width(0b111) = 3 ] [ bit_shft<uint16_t> = bit_width(0b1111) = 4 ] [ bit_shft<uint32_t> = bit_width(0b11111) = 5 ].
|
| template<class T> |
| constexpr auto | utl::bit_ceil (auto x) |
| | Round up division by number of bits within given integer type, which sizeof(T) * 8 is power of two.
|
| constexpr unsigned | utl::cntlz (auto x) |
| | Count leading zeros.
|
| constexpr unsigned | utl::cnttz (auto x) |
| | Count trailing zeros.
|
| template<class T> |
| constexpr size_t | utl::words_in_bits (size_t n) |
| | Get number of words (integers) required to store N bits.
|
| constexpr size_t | utl::bytes_in_bits (size_t n) |
| | Get number of bytes required to store N bits.
|
| template<class T = unsigned> |
| constexpr T | utl::bit (int n) |
| | Make integer with bit at given position.
|
| template<class T> |
| constexpr bool | utl::get_bit (T x, int n) |
| | Get n-th bit of an integer.
|
| template<class T> |
| constexpr void | utl::set_bit (T &x, int n) |
| | Set n-th bit of an integer.
|
| template<class T> |
| constexpr void | utl::clr_bit (T &x, int n) |
| | Clear n-th bit of an integer.
|
| template<class T> |
| constexpr bool | utl::get_arr_bit (const T *p, unsigned n) |
| | Get n-th bit in array of words (starting from LSB).
|
| template<class T> |
| constexpr void | utl::set_arr_bit (T *p, unsigned n) |
| | Set n-th bit in array of words (starting from LSB).
|
| template<class T> |
| constexpr void | utl::clr_arr_bit (T *p, unsigned n) |
| | Clear n-th bit in array of words (starting from LSB).
|
| template<class T, size_t L> |
| constexpr void | utl::shift_left (T(&x)[L]) |
| | Shift bits left in array of integer elements from least significant bit and considering 0-th byte as the right most. uint16_t example: 0b10000000'11100001 ==> 0b00000001'11000010.
|
1.14.0