1. cell/floor(向上/向下取整)

use POSIX qw(ceil floor);

#向上取整
print ceil(5.5); # 6
print ceil(6)  ; # 6
print ceil(6.1); # 7
print ceil(6.5); # 7

#向下取整
print floor(5.5); # 5
print floor(6)  ; # 6
print floor(6.1); # 6
print floor(6.5); # 6

JZTXT

Perl学习笔记7_数字处理

1. cell/floor(向上/向下取整)