int convertToInteger(float num, char method) { switch (method) { case 'r': return round(num); case 'c': return ceil(num); case 'f': return floor(num); case 't': return trunc(num); default: return (int)num; } }
// to convert float to int without floating point operations int ownFloatToInt(int floatBits, int scaler) { int sign = (floatBits >> (EXPONENT_LENGTH + MANTISSA_LENGTH)) & 1; int exponent = (floatBits >> MANTISSA_LENGTH) & ((1 << EXPONENT_LENGTH) - 1); int mantissa = (floatBit...
4. Convert.ToInt32 该方式不仅可以将字符串类型转换为int,还可以将其他的类型转换为int。变量若为object或string类型,当其值为Nul时,会传回0,不会造成程序错误,但是若此string类型的值为string.Empty,转换成int时,程序仍会出错。 该方式对于float类型做四舍五入。 该方式同强制类型转换一样在处理char类型的...
Truncating conversionmeans that any fractional part is discarded, so that e.g. 3.9 is converted to 3. Such a conversion is the default floating to integer conversion in C in the sense that it is applied whenever a value of a floating-point type (float, double or long double) is to be ...
文章目录 一、num转string 1.1 int型数字转字符串 1.2 float/double型数字转字符串(不补0) 二、string转num 2.1 使用stringstream类处理 2.2...头文件 #include #include 1.1 int型数字转字符串 int num = 123; string num2str = to_string(num...int/float/double型数字(不补0) string str = "456.78"...
int dec_pl, sign, ndigits = 3; /* Keep 3 digits of precision. * / str = fcvt(num, ndigits, &dec-pl, &sign); /* Convert the float to a string. * / printf("Original number; %f\n" , num) ; /* Print the original
@@ lua_number2integer is a macro to convert lua_Number to lua_Integer. ** CHANGE them if you know a faster way to convert a lua_Number to ** int (with any rounding method and without throwing errors) in your ** system. In Pentium machines, a naive typecast from double to int ...
(操作符与操作数之间应有空格隔开...) 这里是另一种方式的中缀表达式转后缀表达式,还有一种方式更容易理解一点,但是代码量相对更多,详情可见C语言把中缀表达式转换为后缀表达式 void convert2postfix(char *src,...float cal(char *src) { float stack[MAX_LEN]; float opd1, opd2; int top; char *p, *...
Convert long to int in C119136 hits Convert int to long in C92956 hits Convert unsigned char to int in C88971 hits Convert char* to int in C69114 hits Convert unsigned long to int in C51158 hits Convert long to double in C51133 hits Convert float to double in C51086 hits Convert fl...
下面是本文介绍的float转int向下取整的类图示例: floatToInt+ float floatValue+ int intValue--+floatToInt()+convert() 结尾 通过以上步骤和代码示例,你可以实现Java中float转int向下取整的功能了。希望这篇文章对你有所帮助,如果有任何问题,欢迎随时向我提问。加油,小白!你一定可以掌握这个技巧的!