src/base/bitfield.hh

66  * Extract the bitfield from position 'first' to 'last' (inclusive)
72 bits(T val, int first, int last)
74     int nbits = first - last + 1;
96 mbits(T val, int first, int last)
98     return val & (mask(first+1) & ~mask(last));
102 mask(int first, int last)
104     return mbits((uint64_t)-1LL, first, last);
120  * Return val with bits first to last set to bit_val
125 insertBits(T val, int first, int last, B bit_val)
128     T bmask = mask(first - last + 1) << last;
144  * A convenience function to replace bits first to last of val with bit_val
150 replaceBits(T& val, int first, int last, B bit_val)
152     val = insertBits(val, first, last, bit_val);