Changes the matrix to be the inverse of its original value. Not
all transformation matrices have inverses; if the matrix
collapses points together (it is degenerate),
then it has no inverse and this function will fail.
If the matrix has an inverse, modifies the matrix to
be the inverse matrix and returns #CAIRO_STATUS_SUCCESS. Otherwise,
returns #CAIRO_STATUS_INVALID_MATRIX.
Inputs
none
Results
status
status code indicating success or error (see above)