diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/ADT/APInt.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/ADT/APInt.h b/include/llvm/ADT/APInt.h index 6c418bd..88aa995 100644 --- a/include/llvm/ADT/APInt.h +++ b/include/llvm/ADT/APInt.h @@ -1234,6 +1234,11 @@ public: return BitWidth - 1 - countLeadingZeros(); } + /// @returns the ceil log base 2 of this APInt. + unsigned ceilLogBase2() const { + return BitWidth - (*this - 1).countLeadingZeros(); + } + /// @returns the log base 2 of this APInt if its an exact power of two, -1 /// otherwise int32_t exactLogBase2() const { |