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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65196 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman
2009-02-20 22:51:36 +00:00
parent d5ece81cc7
commit fe2cce63aa
22 changed files with 202 additions and 202 deletions
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50
include/llvm/Support/MathExtras.h
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@ -18,7 +18,7 @@
namespace llvm {
// NOTE: The following support functions use the _32/_64 extensions instead of
// NOTE: The following support functions use the _32/_64 extensions instead of
// type overloading so that signed and unsigned integers can be used without
// ambiguity.
@ -33,23 +33,23 @@ inline uint32_t Lo_32(uint64_t Value) {
}
/// is?Type - these functions produce optimal testing for integer data types.
inline bool isInt8 (int64_t Value) {
return static_cast<int8_t>(Value) == Value;
inline bool isInt8 (int64_t Value) {
return static_cast<int8_t>(Value) == Value;
}
inline bool isUInt8 (int64_t Value) {
return static_cast<uint8_t>(Value) == Value;
inline bool isUInt8 (int64_t Value) {
return static_cast<uint8_t>(Value) == Value;
}
inline bool isInt16 (int64_t Value) {
return static_cast<int16_t>(Value) == Value;
inline bool isInt16 (int64_t Value) {
return static_cast<int16_t>(Value) == Value;
}
inline bool isUInt16(int64_t Value) {
return static_cast<uint16_t>(Value) == Value;
inline bool isUInt16(int64_t Value) {
return static_cast<uint16_t>(Value) == Value;
}
inline bool isInt32 (int64_t Value) {
return static_cast<int32_t>(Value) == Value;
inline bool isInt32 (int64_t Value) {
return static_cast<int32_t>(Value) == Value;
}
inline bool isUInt32(int64_t Value) {
return static_cast<uint32_t>(Value) == Value;
inline bool isUInt32(int64_t Value) {
return static_cast<uint32_t>(Value) == Value;
}
/// isMask_32 - This function returns true if the argument is a sequence of ones
@ -66,20 +66,20 @@ inline bool isMask_64(uint64_t Value) {
return Value && ((Value + 1) & Value) == 0;
}
/// isShiftedMask_32 - This function returns true if the argument contains a
/// isShiftedMask_32 - This function returns true if the argument contains a
/// sequence of ones with the remainder zero (32 bit version.)
/// Ex. isShiftedMask_32(0x0000FF00U) == true.
inline bool isShiftedMask_32(uint32_t Value) {
return isMask_32((Value - 1) | Value);
}
/// isShiftedMask_64 - This function returns true if the argument contains a
/// isShiftedMask_64 - This function returns true if the argument contains a
/// sequence of ones with the remainder zero (64 bit version.)
inline bool isShiftedMask_64(uint64_t Value) {
return isMask_64((Value - 1) | Value);
}
/// isPowerOf2_32 - This function returns true if the argument is a power of
/// isPowerOf2_32 - This function returns true if the argument is a power of
/// two > 0. Ex. isPowerOf2_32(0x00100000U) == true (32 bit edition.)
inline bool isPowerOf2_32(uint32_t Value) {
return Value && !(Value & (Value - 1));
@ -172,7 +172,7 @@ inline unsigned CountLeadingOnes_32(uint32_t Value) {
}
/// CountLeadingZeros_64 - This function performs the platform optimal form
/// of counting the number of zeros from the most significant bit to the first
/// of counting the number of zeros from the most significant bit to the first
/// one bit (64 bit edition.)
/// Returns 64 if the word is zero.
inline unsigned CountLeadingZeros_64(uint64_t Value) {
@ -216,7 +216,7 @@ inline unsigned CountLeadingZeros_64(uint64_t Value) {
}
/// CountLeadingOnes_64 - This function performs the operation
/// of counting the number of ones from the most significant bit to the first
/// of counting the number of ones from the most significant bit to the first
/// zero bit (64 bit edition.)
/// Returns 64 if the word is all ones.
inline unsigned CountLeadingOnes_64(uint64_t Value) {
@ -249,7 +249,7 @@ inline unsigned CountTrailingOnes_32(uint32_t Value) {
}
/// CountTrailingZeros_64 - This function performs the platform optimal form
/// of counting the number of zeros from the least significant bit to the first
/// of counting the number of zeros from the least significant bit to the first
/// one bit (64 bit edition.)
/// Returns 64 if the word is zero.
inline unsigned CountTrailingZeros_64(uint64_t Value) {
@ -268,7 +268,7 @@ inline unsigned CountTrailingZeros_64(uint64_t Value) {
}
/// CountTrailingOnes_64 - This function performs the operation
/// of counting the number of ones from the least significant bit to the first
/// of counting the number of ones from the least significant bit to the first
/// zero bit (64 bit edition.)
/// Returns 64 if the word is all ones.
inline unsigned CountTrailingOnes_64(uint64_t Value) {
@ -301,14 +301,14 @@ inline unsigned CountPopulation_64(uint64_t Value) {
#endif
}
/// Log2_32 - This function returns the floor log base 2 of the specified value,
/// Log2_32 - This function returns the floor log base 2 of the specified value,
/// -1 if the value is zero. (32 bit edition.)
/// Ex. Log2_32(32) == 5, Log2_32(1) == 0, Log2_32(0) == -1, Log2_32(6) == 2
inline unsigned Log2_32(uint32_t Value) {
return 31 - CountLeadingZeros_32(Value);
}
/// Log2_64 - This function returns the floor log base 2 of the specified value,
/// Log2_64 - This function returns the floor log base 2 of the specified value,
/// -1 if the value is zero. (64 bit edition.)
inline unsigned Log2_64(uint64_t Value) {
return 63 - CountLeadingZeros_64(Value);
@ -321,7 +321,7 @@ inline unsigned Log2_32_Ceil(uint32_t Value) {
return 32-CountLeadingZeros_32(Value-1);
}
/// Log2_64 - This function returns the ceil log base 2 of the specified value,
/// Log2_64 - This function returns the ceil log base 2 of the specified value,
/// 64 if the value is zero. (64 bit edition.)
inline unsigned Log2_64_Ceil(uint64_t Value) {
return 64-CountLeadingZeros_64(Value-1);
@ -337,7 +337,7 @@ inline uint64_t GreatestCommonDivisor64(uint64_t A, uint64_t B) {
}
return A;
}
/// BitsToDouble - This function takes a 64-bit integer and returns the bit
/// equivalent double.
inline double BitsToDouble(uint64_t Bits) {
@ -424,7 +424,7 @@ static inline uint64_t NextPowerOf2(uint64_t A) {
inline uint64_t RoundUpToAlignment(uint64_t Value, uint64_t Align) {
return ((Value + Align - 1) / Align) * Align;
}
} // End llvm namespace
#endif