C语言数学函数ceil简介

程序例

matlab函数ceil简介(funcion name function function description Example)

C语言数学函数ceil简介

函数名: ceil

用 法: double ceil(double x);

功 能: 返回大于或者等于指定表达式的最小整数

头文件:math.h

程序例

#include <stdio.h>

#include <math.h>

int main(void)

{

double number = 123.54;

double down, up;

down = floor(number);

up = ceil(number);

printf("original number %5.2lf\", number);

printf("number rounded down %5.2lf\", down);

printf("number rounded up %5.2lf\", up);

return 0;

}

运行结果：

original number 123.54

number rounded down 123.00

number rounded up 124.00

matlab函数ceil简介

funcion name

ceil

function

Round symbolic matrix toward positive infinity Syntaxceil(x) 即向正方向舍入取整

function description

Y = ceil(X) is the matrix of the smallest integers greater than or equal to X.

Example

x = sym(-5/2)

[fix(x) floor(x) round(x) ceil(x) frac(x)]

= [ -2, -3, -3, -2, -1/2]