clyne/constexpr-to-string
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Merge pull request #1 from EnilPajic/patch-1-negative-minimum-value

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Fixed potential bug with -MINIMUM_VALUE
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Clyne 2020-06-27 19:09:25 -04:00 committed by GitHub
commit d680c02d03
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1 changed files with 4 additions and 4 deletions
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8
to_string.hpp
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@ -15,7 +15,7 @@
* @tparam N Number to convert
* @tparam base Desired base, can be from 2 to 36
*/
template<auto N, unsigned int base, typename char_type,
template<auto N, int base, typename char_type,
std::enable_if_t<std::is_integral_v<decltype(N)>, int> = 0,
std::enable_if_t<(base > 1 && base < 37), int> = 0>
class to_string_t {
@ -23,7 +23,7 @@ class to_string_t {
// fits to the number perfectly.
char_type buf[([]() constexpr noexcept {
unsigned int len = N > 0 ? 1 : 2;
for (auto n = N < 0 ? -N : N; n; len++, n /= base);
for (auto n = N; n; len++, n /= base);
return len;
}())] = {};
@ -35,8 +35,8 @@ class to_string_t {
auto ptr = end();
*--ptr = '\0';
if (N != 0) {
for (auto n = N < 0 ? -N : N; n; n /= base)
*--ptr = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[n % base];
for (auto n = N; n; n /= base)
*--ptr = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[(N < 0 ? -1 : 1) * (n % base)];
if (N < 0)
*--ptr = '-';
} else {