diff options
Diffstat (limited to 'src/base')
| -rw-r--r-- | src/base/bitfield.hh | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/base/bitfield.hh b/src/base/bitfield.hh index 177279678..1fc0bad5d 100644 --- a/src/base/bitfield.hh +++ b/src/base/bitfield.hh @@ -58,6 +58,18 @@ bits(T val, int first, int last) } /** + * Mask off the given bits in place like bits() but without shifting. + * msb = 63, lsb = 0 + */ +template <class T> +inline +T +mbits(T val, int first, int last) +{ + return val & (mask(first+1) & ~mask(last)); +} + +/** * Sign-extend an N-bit value to 64 bits. */ template <int N> |