ArrayFire: inverse (original) (raw)

Invert a matrix. More...

Functions
AFAPI array inverse (const array &in, const matProp options=AF_MAT_NONE)
C++ Interface to invert a matrix. More...
AFAPI af_err af_inverse (af_array *out, const af_array in, const af_mat_prop options)
C Interface to invert a matrix. More...

Invert a matrix.

This function inverts a square matrix \(A\). The code snippet to demonstrate this can be seen below.

array IA = inverse(A);

array I = matmul(A, IA);

The sample output can be seen below.

A [3 3 1 1]

0.0100 3.0100 6.0100

1.0100 4.0100 7.0000

2.0000 5.0000 8.0000

IA [3 3 1 1]

48.9076 -99.9927 50.7518

-99.1552 199.9852 -100.4968

49.7451 -99.9926 50.2475

I [3 3 1 1]

1.0000 0.0001 -0.0000

0.0000 1.0000 0.0000

0.0000 0.0000 1.0000


af_inverse()

C Interface to invert a matrix.

The options parameter currently must be AF_MAT_NONE.

Parameters

[out] out inverse matrix
[in] in input matrix
[in] options determines various properties of matrix in

Returns

AF_SUCCESS, if function returns successfully, else an af_err code is given

C++ Interface to invert a matrix.

The options parameter currently must be AF_MAT_NONE.

This function is not supported in GFOR.

Parameters

[in] in input matrix
[in] options determines various properties of matrix in

Returns

inverse matrix