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  • MATLAB中的取整函数(fix、round、floor、ceil)

    • fix - 向零方向取整

    fix Round towards zero.
        fix(X) rounds the elements of X to the nearest integers towards zero.

    例:

    t =

    7.6806 3.5388 3.6130
    2.3309 3.4719 7.4163
    5.8736 2.5372 7.0590

    fix(t)

    ans =

    7 3 3
    2 3 7
    5 2 7

    • round - 向最近的方向取整,亦即“四舍五入”

    round rounds towards nearest decimal or integer
        round(X) rounds each element of X to the nearest integer.

    例:

    t =

    7.6806 3.5388 3.6130
    2.3309 3.4719 7.4163
    5.8736 2.5372 7.0590

    round(t)

    ans =

    8 4 4
    2 3 7
    6 3 7

    • floor - 向负无穷大方向取整

    floor Round towards minus infinity.
        floor(X) rounds the elements of X to the nearest integers towards minus infinity.

    例:

    t =

    7.6806 3.5388 3.6130
    2.3309 3.4719 7.4163
    5.8736 2.5372 7.0590

    floor(t)

    ans =

    7 3 3
    2 3 7
    5 2 7

    • ceil - 向正无穷大方向取整

    ceil Round towards plus infinity.
        ceil(X) rounds the elements of X to the nearest integers towards infinity.

    t =

    7.6806 3.5388 3.6130
    2.3309 3.4719 7.4163
    5.8736 2.5372 7.0590

    ceil(t)

    ans =

    8 4 4
    3 4 8
    6 3 8

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  • 原文地址:https://www.cnblogs.com/avin/p/7068594.html
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