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Improve format_decimal

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Victor Zverovich 2024-07-22 17:24:56 -07:00
parent 4239dfe081
commit 4173a6315a
1 changed files with 14 additions and 10 deletions
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24
include/fmt/format.h
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@ -1308,20 +1308,24 @@ FMT_CONSTEXPR20 auto do_format_decimal(Char* out, UInt value, int size)
}
template <typename Char, typename UInt>
FMT_CONSTEXPR FMT_INLINE auto format_decimal(Char* out, UInt value, int size)
-> Char* {
do_format_decimal(out, value, size);
return out + size;
FMT_CONSTEXPR FMT_INLINE auto format_decimal(Char* out, UInt value,
int num_digits) -> Char* {
do_format_decimal(out, value, num_digits);
return out + num_digits;
}
template <typename Char, typename UInt, typename OutputIt,
FMT_ENABLE_IF(is_back_insert_iterator<OutputIt>::value)>
FMT_CONSTEXPR inline auto format_decimal(OutputIt out, UInt value, int size)
FMT_CONSTEXPR auto format_decimal(OutputIt out, UInt value, int num_digits)
-> OutputIt {
if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) {
do_format_decimal(ptr, value, num_digits);
return out;
}
// Buffer is large enough to hold all digits (digits10 + 1).
char buffer[digits10<UInt>() + 1] = {};
do_format_decimal(buffer, value, size);
return detail::copy_noinline<Char>(buffer, buffer + size, out);
do_format_decimal(buffer, value, num_digits);
return detail::copy_noinline<Char>(buffer, buffer + num_digits, out);
}
template <unsigned BASE_BITS, typename Char, typename UInt>
@ -1338,9 +1342,9 @@ FMT_CONSTEXPR auto format_uint(Char* buffer, UInt value, int num_digits,
return end;
}
template <unsigned BASE_BITS, typename Char, typename It, typename UInt>
FMT_CONSTEXPR inline auto format_uint(It out, UInt value, int num_digits,
bool upper = false) -> It {
template <unsigned BASE_BITS, typename Char, typename OutputIt, typename UInt>
FMT_CONSTEXPR inline auto format_uint(OutputIt out, UInt value, int num_digits,
bool upper = false) -> OutputIt {
if (auto ptr = to_pointer<Char>(out, to_unsigned(num_digits))) {
format_uint<BASE_BITS>(ptr, value, num_digits, upper);
return out;