matlab 里的mod,matlab中mod（）函数究竟有什么用？具体的作用（不要告诉我怎么算，我只想知道他有什么用）...

满意答案

hl2panluan

2013.10.09

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help mod

MOD Modulus after division.

MOD(x,y) is x - n.*y where n = floor(x./y) if y ~= 0. If y is not an

integer and the quotient x./y is within roundoff error of an integer,

then n is that integer. The inputs x and y must be real arrays of the

same size, or real scalars.

The statement "x and y are congruent mod m" means mod(x,m) == mod(y,m).

By convention:

MOD(x,0) is x.

MOD(x,x) is 0.

MOD(x,y), for x~=y and y~=0, has the same sign as y.

Note: REM(x,y), for x~=y and y~=0, has the same sign as x.

MOD(x,y) and REM(x,y) are equal if x and y have the same sign, but

differ by y if x and y have different signs.

See also rem.

Overloaded methods:

codistributed/mod

sym/mod

Reference page in Help browser

doc mod

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