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IMSL_INV

IMSL_INV

The IMSL_INV function computes the inverse of a real or complex, square matrix.

This routine requires an IDL Advanced Math and Stats license. For more information, contact your sales or technical support representative.

Example


Compute the incomplete beta function for the corresponding elements of A, B, and Z.

RM, a, 3, 3
; Define the matrix to be inverted.
row 0: 1 3 3
row 1: 1 3 4
row 2: 1 4 4
ainv = IMSL_INV(a)
 
; Call IMSL_INV to perform the inversion.
PM, a
 
; Output the original matrix.
1.00000    3.00000    3.00000
1.00000    3.00000    4.00000
1.00000    4.00000    4.00000
PM, ainv
 
; Output the computed inverse.
 4.00000   -0.00000   -3.00000
 0.00000   -1.00000    1.00000
-1.00000    1.00000    0.00000
PM, a # ainv
 
; Check the results.
1.00000    0.00000    0.00000
0.00000    1.00000    0.00000
0.00000    0.00000    1.00000

Syntax


Result = IMSL_INV( A, [, /DOUBLE])

Return Value


A two-dimensional matrix containing the inverse of the matrix A.

Arguments


A

Two-dimensional matrix containing the matrix to be inverted.

Keywords


DOUBLE (optional)

If present and nonzero, double precision is used.

Errors


Fatal Errors

MATH_SINGULAR_MATRIX: Input matrix is singular

Version History


6.4

Introduced



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