lapack_inv_f32

void lapack_inv_f32(float * A, int n, int * info)

Single-precision in-place matrix inversion via LU.

Overwrites $A$ with $A^{-1}$ . Internally runs sgetrf_ (LU with partial pivoting) followed by sgetri_ (invert using the LU factors).

Math

$A A^{-1} = I_n$

References

LAPACK sgetrf_ + sgetri_.

Afloat*

Row-major

n \times n

matrix; replaced in place with

A^{-1}

nint

Side length.

infoint*

LAPACK status word. 0 = success; < 0 = illegal argument; > 0 = matrix is exactly singular (no inverse).

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void lapack_inv_f32(float * A, int n, int * info)