diff options
Diffstat (limited to 'src/base/bitfield.hh')
| -rw-r--r-- | src/base/bitfield.hh | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/base/bitfield.hh b/src/base/bitfield.hh index 1fc0bad5d..0f1233677 100644 --- a/src/base/bitfield.hh +++ b/src/base/bitfield.hh @@ -44,6 +44,7 @@ mask(int nbits) } + /** * Extract the bitfield from position 'first' to 'last' (inclusive) * from 'val' and right justify it. MSB is numbered 63, LSB is 0. @@ -69,6 +70,12 @@ mbits(T val, int first, int last) return val & (mask(first+1) & ~mask(last)); } +inline uint64_t +mask(int first, int last) +{ + return mbits((uint64_t)-1LL, first, last); +} + /** * Sign-extend an N-bit value to 64 bits. */ |