_C23_UNSEQ_ATTR
extern unsigned int stdc_trailing_ones_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_ones_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_ones_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_ones_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_zero_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_zero_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_zero_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_zero_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_one_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_one_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_one_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_leading_one_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_zero_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_zero_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_zero_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_zero_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_one_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_one_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_one_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_first_trailing_one_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_zeros_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_zeros_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_zeros_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_zeros_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_ones_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_ones_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_ones_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_ones_ul(unsigned long) _C23_UNSEQ_ATTR;
extern bool stdc_has_single_bit_uc(unsigned char) _C23_UNSEQ_ATTR;
extern bool stdc_has_single_bit_us(unsigned short) _C23_UNSEQ_ATTR;
extern bool stdc_has_single_bit_ui(unsigned int) _C23_UNSEQ_ATTR;
extern bool stdc_has_single_bit_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_width_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_width_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_width_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_width_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned char stdc_bit_floor_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned short stdc_bit_floor_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_floor_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned long stdc_bit_floor_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned char stdc_bit_ceil_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned short stdc_bit_ceil_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_ceil_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned long stdc_bit_ceil_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_zeros_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_ones_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_zeros_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_ones_ull(unsigned long long) _C23_UNSEQ_ATTR;
_C23_UNSEQ_ATTR;
_C23_UNSEQ_ATTR;
_C23_UNSEQ_ATTR;
_C23_UNSEQ_ATTR;
extern unsigned int stdc_count_zeros_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_count_ones_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern bool stdc_has_single_bit_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_bit_width_ull(unsigned long long) _C23_UNSEQ_ATTR;
_C23_UNSEQ_ATTR;
extern unsigned long long stdc_bit_ceil_ull(unsigned long long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_zeros_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_zeros_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_zeros_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_zeros_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_ones_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_ones_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_ones_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_leading_ones_ul(unsigned long) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_zeros_uc(unsigned char) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_zeros_us(unsigned short) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_zeros_ui(unsigned int) _C23_UNSEQ_ATTR;
extern unsigned int stdc_trailing_zeros_ul(unsigned long) _C23_UNSEQ_ATTR;