// If _DecOnly is false: if the character is an alphanumeric digit, then
// return its corresponding base-36 value, otherwise return a value >= 127.
template<bool _DecOnly = false>
- _GLIBCXX23_CONSTEXPR unsigned char
+ _GLIBCXX20_CONSTEXPR unsigned char
__from_chars_alnum_to_val(unsigned char __c)
{
if _GLIBCXX17_CONSTEXPR (_DecOnly)
size_t
__int_from_arg(const basic_format_arg<_Context>& __arg);
+ constexpr bool __is_digit(char __c)
+ { return std::__detail::__from_chars_alnum_to_val(__c) < 10; }
+
+ constexpr bool __is_xdigit(char __c)
+ { return std::__detail::__from_chars_alnum_to_val(__c) < 16; }
+
template<typename _CharT>
struct _Spec
{
unsigned short& __val, bool& __arg_id,
basic_format_parse_context<_CharT>& __pc)
{
- if (std::isdigit(*__first))
+ if (__format::__is_digit(*__first))
{
auto [__v, __ptr] = __format::__parse_integer(__first, __last);
if (!__ptr)
if (__trailing_zeros)
{
- if (!std::isxdigit(__s[0]))
+ if (!__format::__is_xdigit(__s[0]))
--__sigfigs;
__z = __prec - __sigfigs;
}
{
__fill_char = _CharT('0');
// Write sign before zero filling.
- if (!std::isxdigit(__narrow_str[0]))
+ if (!__format::__is_xdigit(__narrow_str[0]))
{
*__out++ = __str[0];
__str.remove_prefix(1);