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Optimize format_uint

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This commit is contained in:
Victor Zverovich 2020-10-21 08:19:21 -07:00
parent 7446818f98
commit 9755307842
1 changed files with 4 additions and 0 deletions
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4
include/fmt/format.h
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@ -1112,6 +1112,10 @@ Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits,
template <unsigned BASE_BITS, typename Char, typename It, typename UInt>
inline It format_uint(It out, UInt value, int num_digits, bool upper = false) {
if (auto ptr = to_pointer<Char>(out, num_digits)) {
format_uint<BASE_BITS>(ptr, value, num_digits, upper);
return out;
}
// Buffer should be large enough to hold all digits (digits / BASE_BITS + 1).
char buffer[num_bits<UInt>() / BASE_BITS + 1];
format_uint<BASE_BITS>(buffer, value, num_digits, upper);