matlab中关于floor函数的作用

uqHZau · 发表于 2020-7-7 18:55

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关于floor函数的作用：

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.

norm：求矩阵或向量的泛数

         x = [1 2 3 4 5 6];

         norm(x) = 9.5394

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

NNNei256 · 发表于 2020-7-7 20:04

matlab中关于floor函数的作用

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matlab中关于floor函数的作用

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