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PsiL_{A}B Help Manual
Page

## Section:
Basic Matrix functions

## Name:
=<-.>

**Subtract a constant from the elements of the matrix a. **

The result is stored in an already allocated matrix c.

c.{i,j,k,...} <- a.{i,j,k,...} - b

Both matrices a and b must have the same size and dimension. The resulting matrix c is of the same size, type and dimension.

Supported types: [ *int,float,complex *]

[ c:('a, 'b, 'c) Matrix.t ] **=<-> **

a:('a, 'b, 'c) Matrix.t *

b:'a

Example:

[] let i = imatrix ~dim:[50;40] ~rand:[1000] () ;;
val i : (int, '_a, '_b) Matrix.t = <abstr>
[] let c = imatrix ~dim:[50;40] ;;
let j = imatrix ~dim:[50;40] ~rand:[1000] () ;;
[] c =<-> (i,1) ;;
- unit

With the operator =<.-> , the matrix and constant are interchanged.

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