Matlab取整函数

matlab中小数取整的函数大约有四个：floor、ceil、round、fix若 A = [-2.0, -1.9, -1.55, -1.45, -1.1, 1.0, 1.1, 1.45, 1.55,  1.9, 2.0];floor:朝负无穷方向靠近最近的整数；floor(A)ans =    -2    -2    -2    -2    -2     1     1     1     1     1     2ceil:朝正无穷方向靠近最近的整数；ceil(A)ans =    -2    -1    -1    -1    -1     1     2     2     2     2     2round:取最近的整数（相当于四舍五入）round(A)ans =    -2    -2    -2    -1    -1     1     1     1     2     2     2fix:取离0最近的整数 fix(A)ans =    -2    -1    -1    -1    -1     1     1     1     1     1     2