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| author | Dale Johannesen <dalej@apple.com> | 2009-05-13 00:24:22 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2009-05-13 00:24:22 +0000 |
| commit | 8634ce3bb4fd73a5096d1fc3ed6ffa20996e214e (patch) | |
| tree | b7bfebbf35cc0ff04599b78130048ee6b8f163b9 /include/llvm/Support/MathExtras.h | |
| parent | c10915b85165887e1886179338c7d14925f95c52 (diff) | |
| download | external_llvm-8634ce3bb4fd73a5096d1fc3ed6ffa20996e214e.zip external_llvm-8634ce3bb4fd73a5096d1fc3ed6ffa20996e214e.tar.gz external_llvm-8634ce3bb4fd73a5096d1fc3ed6ffa20996e214e.tar.bz2 | |
Add an int64_t variant of abs, for host environments
without one. Use it where we were using abs on
int64_t objects.
(I strongly suspect the casts to unsigned in the
fragments in LoopStrengthReduce are not doing whatever
the original intent was, but the obvious change to
uint64_t doesn't work. Maybe later.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71612 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Support/MathExtras.h')
| -rw-r--r-- | include/llvm/Support/MathExtras.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h index 0fb2760..fd3ac91 100644 --- a/include/llvm/Support/MathExtras.h +++ b/include/llvm/Support/MathExtras.h @@ -425,6 +425,13 @@ inline uint64_t RoundUpToAlignment(uint64_t Value, uint64_t Align) { return ((Value + Align - 1) / Align) * Align; } +/// abs64 - absolute value of a 64-bit int. Not all environments support +/// "abs" on whatever their name for the 64-bit int type is. The absolute +/// value of the largest negative number is undefined, as with "abs". +inline int64_t abs64(int64_t x) { + return (x < 0) ? -x : x; +} + } // End llvm namespace #endif |