Matlab基本函数-floor函数

1、floor函数：朝负无穷大方向取整

2、用法说明：

      y = floor(x) 函数将x中元素取整，值y为不大于本身的最大整数。对于复数，分别对实部和虚部取整

3、用法举例

>> x = [3+4i 6-7i 9+11i 1-4i 3.4-4.5i 90.67-123i]

x =

   1.0e+02 *

  Columns 1 through 5

   0.0300 + 0.0400i   0.0600 - 0.0700i   0.0900 + 0.1100i   0.0100 - 0.0400i   0.0340 - 0.0450i

  Column 6

   0.9067 - 1.2300i

>> y = floor(x)

y =

   1.0e+02 *

  Columns 1 through 5

   0.0300 + 0.0400i   0.0600 - 0.0700i   0.0900 + 0.1100i   0.0100 - 0.0400i   0.0300 - 0.0500i

  Column 6

   0.9000 - 1.2300i

4、附录

>> help floor
 floor  Round towards minus infinity.
    floor(X) rounds the elements of X to the nearest integers
    towards minus infinity.
 
    See also round, ceil, fix.

    Overloaded methods:
       codistributed/floor
       gpuArray/floor

    Reference page in Help browser
       doc floor