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Fix more Werrors

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- Werror=conversion,char-subscripts
This commit is contained in:
Maya Warrier 2023-12-12 21:26:48 -05:00
parent 7a21a8d6d7
commit 624ba49434
2 changed files with 5 additions and 10 deletions
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13
include/fast_float/ascii_number.h
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@ -7,6 +7,7 @@
#include <iterator>
#include <limits>
#include <type_traits>
#include <charconv>
#include "float_common.h"
@ -462,11 +463,6 @@ from_chars_result_t<UC> parse_int_string(UC const* p, UC const* pend, T& value,
++p;
}
// skip leading zeros
while (p != pend && *p == UC('0')) {
++p;
}
UC const* const start_digits = p;
uint64_t i = 0;
@ -512,10 +508,9 @@ from_chars_result_t<UC> parse_int_string(UC const* p, UC const* pend, T& value,
if (negative) {
// this weird workaround is required because:
// - converting unsigned to signed when its value is greater than signed max is UB pre-C++23.
// - reinterpret_cast<T>(~i + 1) would have worked, but it is not constexpr
// this should be optimized away.
value = -std::numeric_limits<T>::max() -
static_cast<T>(i - std::numeric_limits<T>::max());
// - reinterpret_casting (~i + 1) would work, but it is not constexpr
// this is always optimized into a neg instruction.
value = T(-std::numeric_limits<T>::max() - T(i - std::numeric_limits<T>::max()));
}
else value = T(i);

2
include/fast_float/float_common.h
View File

@ -741,7 +741,7 @@ constexpr uint64_t int_luts<T>::min_safe_u64[];
template <typename UC>
fastfloat_really_inline
constexpr uint8_t ch_to_digit(UC c) { return int_luts<>::chdigit[c]; }
constexpr uint8_t ch_to_digit(UC c) { return int_luts<>::chdigit[static_cast<unsigned char>(c)]; }
fastfloat_really_inline
constexpr size_t max_digits_u64(int base) { return int_luts<>::maxdigits_u64[base - 2]; }