首页 > 其他 > 详细

关于Matlab里面的四个取整(舍入)函数:Floor, Ceil, Fix, Round的解释(转)

时间:2015-06-12 09:51:17      阅读:219      评论:0      收藏:0      [点我收藏+]
 
floor:朝负无穷方向舍入
B = floor(A) rounds the elements of A to the nearest integers less than or equal to A.
 
ceil:朝正无穷方向舍入 
B = ceil(A) rounds the elements of A to the nearest integers greater than or equal to A.
 
fix:朝零方向舍入 
B = fix(A) rounds the elements of A toward zero, resulting in an array of integers.
 
round:四舍五入 
B = round(A) rounds the elements of X to the nearest integers.  
 
Example:
a=       [-0.9,  -2.1,  -0.4,  0.3,  0.8,  1.1,  2.7,  -1.2+2.9i];

floor(a)=[ -1,    -3,    -1,    0,    0,    1,    2,     -2+2i]

ceil(a)= [ 0,     -2,     0,    1,    1,    2,    3,     -1+3i]

fix(a)=  [ 0,     -2,     0,    0,    0,    1,    2,     -1+2i]

round(a)=[-1,     -2,     0,    0,    1,    1,    3,     -1+3i]

注:For complex X, for all the four fuctions the imaginary and real parts are rounded independently.
 

关于Matlab里面的四个取整(舍入)函数:Floor, Ceil, Fix, Round的解释(转)

原文:http://www.cnblogs.com/aminxu/p/4570857.html

(0)
(0)
   
举报
评论 一句话评论(0
关于我们 - 联系我们 - 留言反馈 - 联系我们:wmxa8@hotmail.com
© 2014 bubuko.com 版权所有
打开技术之扣,分享程序人生!