/// Log2 - This function returns the log base 2 of the specified value
inline double Log2(double Value) {
#if defined(__ANDROID_API__) && __ANDROID_API__ < 18
- return (double)__builtin_log2l(Value);
+ return __builtin_log(Value) / __builtin_log(2.0);
#else
return log2(Value);
#endif
/// 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 size_t Log2_32(uint32_t Value) {
+inline unsigned Log2_32(uint32_t Value) {
return 31 - countLeadingZeros(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 size_t Log2_64(uint64_t Value) {
+inline unsigned Log2_64(uint64_t Value) {
return 63 - countLeadingZeros(Value);
}
/// Log2_32_Ceil - This function returns the ceil log base 2 of the specified
/// value, 32 if the value is zero. (32 bit edition).
/// Ex. Log2_32_Ceil(32) == 5, Log2_32_Ceil(1) == 0, Log2_32_Ceil(6) == 3
-inline size_t Log2_32_Ceil(uint32_t Value) {
+inline unsigned Log2_32_Ceil(uint32_t Value) {
return 32 - countLeadingZeros(Value - 1);
}
/// Log2_64_Ceil - This function returns the ceil log base 2 of the specified
/// value, 64 if the value is zero. (64 bit edition.)
-inline size_t Log2_64_Ceil(uint64_t Value) {
+inline unsigned Log2_64_Ceil(uint64_t Value) {
return 64 - countLeadingZeros(Value - 1);
}
///
/// Alignment should be a power of two. This method rounds up, so
/// alignAddr(7, 4) == 8 and alignAddr(8, 4) == 8.
-inline uintptr_t alignAddr(void *Addr, size_t Alignment) {
+inline uintptr_t alignAddr(const void *Addr, size_t Alignment) {
assert(Alignment && isPowerOf2_64((uint64_t)Alignment) &&
"Alignment is not a power of two!");
/// \brief Returns the necessary adjustment for aligning \c Ptr to \c Alignment
/// bytes, rounding up.
-inline size_t alignmentAdjustment(void *Ptr, size_t Alignment) {
+inline size_t alignmentAdjustment(const void *Ptr, size_t Alignment) {
return alignAddr(Ptr, Alignment) - (uintptr_t)Ptr;
}