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Optimize count_digits

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This commit is contained in:
Victor Zverovich
2020-08-02 07:39:14 -07:00
parent 8d9ab96736
commit 208291205d
2 changed files with 14 additions and 6 deletions
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7
include/fmt/format-inl.h
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@@ -263,6 +263,13 @@ const typename basic_data<T>::digit_pair basic_data<T>::digits[] = {
template <typename T>
const char basic_data<T>::hex_digits[] = "0123456789abcdef";
template <typename T>
const uint16_t basic_data<T>::bsr2log10[] = {
1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5,
6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10,
10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15,
15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20};
#define FMT_POWERS_OF_10(factor) \
factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \
(factor)*1000000, (factor)*10000000, (factor)*100000000, \