c语言 quant函数
English Answer:
The `quant` function in C is used to convert a double-precision floating-point number to a __int64 integer. It is defined in the `<math.h>` header file. The syntax of the `quant` function is as follows:
c.
__int64 quant(double x);
The `quant` function takes a single argument, which is a double-precision floating-point number. It returns the __int64 integer that is closest to the argument. If the argument is exactly halfway between two integers, the function returns the even integer.
The `quant` function can be used to convert floating-point numbers to integers for a variety of purposes. For example, it can be used to convert the result of a calculation to an integer, or to convert the value of a user input to an integer.
Here is an example of how to use the `quant` function:
c.
#include <math.h>。
int main() {。
double x = 3.14;
__int64 y = quant(x);
printf("The __int64 integer closest to %f is %lld.\n", x, y);
return 0;
}。
This program will print the following output:
The __int64 integer closest to 3.140000 is 3.
Chinese Answer:
C语言中的`quant`函数用于将双精度浮点数转换为`__int64`整数。它在`<math.h>`头文件中定义。`quant`函数的语法如下:printf函数的用法python
c.
__int64 quant(double x);
`quant`函数接收一个参数,即双精度浮点数。它返回最接近该参数的`__int64`整数。如果参数恰好在两个整数之间,则该函数返回偶数整数。
`quant`函数可以用于将浮点数转换为整数,用于各种目的。例如,它可以用于将计算结果转换为整数,或将用户输入的值转换为整数。
以下是`quant`函数用法示例:
c.
#include <math.h>。
int main() {。
double x = 3.14;
__int64 y = quant(x);
printf("最接近%f的__int64整数是%lld。\n", x, y);
return 0;
}。
此程序将打印以下输出:
最接近3.140000的__int64整数是3。
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