Forgot to support to_string<0>

pull/4/head
Clyne 4 years ago committed by GitHub
parent 4cffc3ffbc
commit 1d8ef0361c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23

@ -22,7 +22,7 @@ struct to_string_t {
// The lambda calculates what the string length of N will be, so that `buf` // The lambda calculates what the string length of N will be, so that `buf`
// fits to the number perfectly. // fits to the number perfectly.
char buf[([] { char buf[([] {
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 < 0 ? -N : N; n; len++, n /= base);
return len; return len;
}())] = {}; }())] = {};
@ -31,12 +31,16 @@ struct to_string_t {
* Constructs the object, filling `buf` with the string representation of N. * Constructs the object, filling `buf` with the string representation of N.
*/ */
constexpr to_string_t() noexcept { constexpr to_string_t() noexcept {
if (N != 0) {
auto ptr = buf + sizeof(buf) / sizeof(buf[0]); auto ptr = buf + sizeof(buf) / sizeof(buf[0]);
*--ptr = '\0'; *--ptr = '\0';
for (auto n = N < 0 ? -N : N; n; n /= base) for (auto n = N < 0 ? -N : N; n; n /= base)
*--ptr = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[n % base]; *--ptr = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"[n % base];
if (N < 0) if (N < 0)
*--ptr = '-'; *--ptr = '-';
} else {
buf[0] = '0';
}
} }
/** /**

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