diff options
Diffstat (limited to 'include/llvm/Support/MathExtras.h')
| -rw-r--r-- | include/llvm/Support/MathExtras.h | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h index dafb479..4627557 100644 --- a/include/llvm/Support/MathExtras.h +++ b/include/llvm/Support/MathExtras.h @@ -14,8 +14,7 @@ #ifndef LLVM_SUPPORT_MATHEXTRAS_H #define LLVM_SUPPORT_MATHEXTRAS_H -#include "llvm/System/DataTypes.h" -#include "llvm/System/SwapByteOrder.h" +#include "llvm/Support/SwapByteOrder.h" namespace llvm { @@ -77,6 +76,12 @@ inline bool isUIntN(unsigned N, uint64_t x) { return x == (x & (~0ULL >> (64 - N))); } +/// isIntN - Checks if an signed integer fits into the given (dynamic) +/// bit width. +inline bool isIntN(unsigned N, int64_t x) { + return N >= 64 || (-(INT64_C(1)<<(N-1)) <= x && x < (INT64_C(1)<<(N-1))); +} + /// 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. @@ -119,19 +124,19 @@ inline bool isPowerOf2_64(uint64_t Value) { /// ByteSwap_16 - This function returns a byte-swapped representation of the /// 16-bit argument, Value. inline uint16_t ByteSwap_16(uint16_t Value) { - return sys::SwapByteOrder(Value); + return sys::SwapByteOrder_16(Value); } /// ByteSwap_32 - This function returns a byte-swapped representation of the /// 32-bit argument, Value. inline uint32_t ByteSwap_32(uint32_t Value) { - return sys::SwapByteOrder(Value); + return sys::SwapByteOrder_32(Value); } /// ByteSwap_64 - This function returns a byte-swapped representation of the /// 64-bit argument, Value. inline uint64_t ByteSwap_64(uint64_t Value) { - return sys::SwapByteOrder(Value); + return sys::SwapByteOrder_64(Value); } /// CountLeadingZeros_32 - this function performs the platform optimal form of |