22 return OS << N <<
" / " << D <<
" = "
23 <<
format(
"%g%%", ((
double)N / D) * 100.0);
28 static uint64_t
scale(uint64_t Num, uint32_t
N, uint32_t D) {
29 assert(D &&
"divide by 0");
36 uint64_t ProductHigh = (Num >> 32) * N;
37 uint64_t ProductLow = (Num & UINT32_MAX) * N;
40 uint32_t Upper32 = ProductHigh >> 32;
41 uint32_t Lower32 = ProductLow & UINT32_MAX;
42 uint32_t Mid32Partial = ProductHigh & UINT32_MAX;
43 uint32_t Mid32 = Mid32Partial + (ProductLow >> 32);
46 Upper32 += Mid32 < Mid32Partial;
52 uint64_t Rem = (uint64_t(Upper32) << 32) | Mid32;
53 uint64_t UpperQ = Rem / D;
56 if (UpperQ > UINT32_MAX)
59 Rem = ((Rem % D) << 32) | Lower32;
60 uint64_t LowerQ = Rem / D;
61 uint64_t Q = (UpperQ << 32) + LowerQ;
64 return Q < LowerQ ? UINT64_MAX : Q;
static uint64_t scale(uint64_t Num, uint32_t N, uint32_t D)
format_object< Ts...> format(const char *Fmt, const Ts &...Vals)
These are helper functions used to produce formatted output.
uint64_t scaleByInverse(uint64_t Num) const
Scale a large integer by the inverse.
raw_ostream & print(raw_ostream &OS) const
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
uint64_t scale(uint64_t Num) const
Scale a large integer.
This class implements an extremely fast bulk output stream that can only output to a stream...