clyne/constexpr-to-string
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Fixed potential bug with -MINIMUM_VALUE #1

Merged
EnilPajic merged 3 commits from patch-1-negative-minimum-value into master 2020-06-27 19:09:26 -04:00
Conversation 0 Commits 3 Files Changed 1 +4 -4
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 N Number to convert
* @tparam base Desired base, can be from 2 to 36 * @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<std::is_integral_v<decltype(N)>, int> = 0,
std::enable_if_t<(base > 1 && base < 37), int> = 0> std::enable_if_t<(base > 1 && base < 37), int> = 0>
class to_string_t { class to_string_t {
@ -23,7 +23,7 @@ class to_string_t {
// fits to the number perfectly. // fits to the number perfectly.
char_type buf[([]() constexpr noexcept { char_type buf[([]() constexpr noexcept {
unsigned int len = N > 0 ? 1 : 2; 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; return len;
}())] = {}; }())] = {};
@ -35,8 +35,8 @@ class to_string_t {
auto ptr = end(); auto ptr = end();
*--ptr = '\0'; *--ptr = '\0';
if (N != 0) { if (N != 0) {
for (auto n = N < 0 ? -N : N; n; n /= base) for (auto n = N; n; n /= base)
*--ptr = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[n % base]; *--ptr = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[(N < 0 ? -1 : 1) * (n % base)];
if (N < 0) if (N < 0)
*--ptr = '-'; *--ptr = '-';
} else { } else {