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# zeros

null matrix

### Syntax

```y=zeros(m1,m2,...)
y=zeros(x)
y=zeros()```

### Arguments

x,y

matrices

m1, m2,..

integers

type

optional character string: 'double', 'boolean','int8', 'uint8', 'int16', 'uint16', 'int32', 'uint32', 'int64', or 'uint64'.

### Description

Returns a null matrix. By default the returned matrix is of double precision floating point type but a given type can be precised in the type argument.

zeros(m1,m2,..,mn)

creates a `(m1,m2,..,mn)` null matrix.

zeros(m1,m2,..,mn,type)

returns a `(m1,m2,..,mn)` null matrix with type given by `type`. In the case of boolean type the matrix is filled with `%F` value.

zeros(x)

returns a null matrix with the same size as `x`.

zeros(m1,m2,..,mn,type)

returns a null matrix with the same size as `x` and type given by `type`. In the case of boolean type the matrix is filled with `%F` value.

zeros(x)

is also valid for `x` a `syslin` list.

### Remarks

• Note that `zeros(3)` is `zeros(a)` with `a=3` i.e it is NOT a 3x3 matrix!

• zeros() is equivalent to zeros(1,1).

• `zeros(3,-3)` and `zeros(-3,-3)` both return an empty matrix.

 `repmat(1, sizes)` can be used to generate an array of zeros with `sizes=[m1 m2 ..]` given as a vector.

### Examples

```zeros(3)
zeros(3,3)
zeros(3,3,"uint8")
zeros(3,3,"boolean")
zeros(2,3,2)

repmat(1, [2 4 2])```

• eye — identity matrix
• ones — matrix made of ones
• repmat — Replicate and tile an array
• -0 — Processing of -0 versus 0