diff options
Diffstat (limited to 'include/llvm/Support/MathExtras.h')
| -rw-r--r-- | include/llvm/Support/MathExtras.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h index 3b907808dd..dafb479a99 100644 --- a/include/llvm/Support/MathExtras.h +++ b/include/llvm/Support/MathExtras.h @@ -71,6 +71,12 @@ inline bool isUInt<32>(uint64_t x) { return static_cast<uint32_t>(x) == x; } +/// isUIntN - Checks if an unsigned integer fits into the given (dynamic) +/// bit width. +inline bool isUIntN(unsigned N, uint64_t x) { + return x == (x & (~0ULL >> (64 - N))); +} + /// isMask_32 - This function returns true if the argument is a sequence of ones /// starting at the least significant bit with the remainder zero (32 bit /// version). Ex. isMask_32(0x0000FFFFU) == true. |