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unify fastReadNum

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This commit is contained in:
Drath Vader
2026-01-02 12:24:33 +01:00
parent a54b89bce8
commit c0af0dee95
4 changed files with 21 additions and 23 deletions
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16
include/utils.hpp
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@@ -22,18 +22,16 @@ ssize_t readFile(const std::string& path, char* buffer, size_t maxlen);
ssize_t readFile(const char* path, char* buffer, size_t maxlen);
std::string getFirstDir(const std::string_view& path);
/* reads a number from file REALLY fast */
template <typename T, size_t N>
/* reads a number fast and divides it if needed */
template <uint32_t Divider = 1, typename T, size_t N>
inline void fastReadNum(const std::string& path, char (&buf)[N], T& result) {
readFile(path, buf, N);
std::from_chars(buf, buf + N, result);
}
/* reads a number slightly slower and divides it */
template <uint32_t Divider, typename T, size_t N>
inline void fastReadNumDiv(const std::string& path, char (&buf)[N], T& result) {
if constexpr (Divider == 1) {
std::from_chars(buf, buf + N, result);
return;
}
uint64_t temp{};
fastReadNum(path, buf, temp);
std::from_chars(buf, buf + N, temp);
if constexpr (std::is_floating_point_v<T>)
result = temp / static_cast<T>(Divider);
else