AI代码解释 context->m_query_embedding+=to_string(recommend_info->vecitem(0).vecscore(i)); 于是我把这个recommend_info->vecitem(0).vecscore(i)打印出来,这个数据精度是小数点后16位没问题,但是context->m_query_embedding是小数点后6问题。显然是这个std::to_string出现了精读丢失的问题。 果不其然,...
cpp #include <iostream> #include <sstream> #include <iomanip> // for std::setw and std::setfill #include <string> std::string hexStringToDecimalString(const std::string& hexStr) { // 将十六进制字符串转换为无符号长整型 unsigned long long decimalValue =...
double string_to_double(const std::string &str) { double dInteger = 0; // 整数部分 double dDecimal = 0; // 小数部分 int sign = 1; // 符号 bool bFindPoint = false; double dCount = 1; // 小数部分的值 for (int i = 0 ; i < str.length(); ++i) { if ((i) == '-') ...
[2] 整数的话，是 binary、octal、decimal、hex 哪种进制？是显式指定解析的进制，还是根据前缀 0、0...
The C++ std::string::stoull() function is used to convert a string to an unsigned long long integer. It analyse the string to extract the numerical value and ignores any whitespaces. It also supports optional parameters to specify the base for conversion, such as decimal, hexadecimal, or ...
Looks likestod()tries to use some "regional standards" from OS. So, every time I want to convert string to double there is a "request" to Windows about "What are correct decimal separator?" Or something... That situation leads to 2 major problems: ...
CString decimal = _T("4011"); ASSERT(_tcstoul(hex, 0, 16) == _ttoi(decimal)); 4、CString 型和 char* 类型的相互转化 这是初学者使用 CString 时最常见的问题。有了 C++ 的帮助,很多问题你不需要深入的去考虑它,直接拿来用就行了,但是如果你不能深入了解它的运行机制,又会有很多问题让你迷惑,特...
com/en-us/cpp/c-runtime-library/string-to-numeric-value-functions^strtof, strtod, strtoldhttps:...
使用C++11 的 std::to_string 函数: 代码语言:cpp 复制 #include<iostream> #include<string> #include<vector> int main() { int arr[] = {1, 2, 3, 4, 5}; int size = sizeof(arr) / sizeof(arr[0]); std::vector<std::string> str_arr; for (int i = 0; i< size; ++i) { ...
Converts a signed decimal integer to a string with the same content as whatstd::sprintf(buf,"%lld", value)would produce for sufficiently largebuf. The text has been machine-translated viaGoogle Translate. You can help to correct and verify the translation. Clickherefor instructions. ...