.\" @(#)PEXInvertMatrix2D.3 1.4 95/03/24 SMI;
.so man3/pex.macs
.TH PEXInvertMatrix2D 3 "May 1995" "Solaris PEXlib Reference Manual" ""
.SH NAME
PEXInvertMatrix2D - utility function
.SH SYNTAX
.HP
int PEXInvertMatrix2D\^(\^PEXMatrix3x3 \fItransform\fP, PEXMatrix3x3 \fItransform_return\fP\^)
.SH PARAMETERS
.IP \fItransform\fP 1i
The transformation matrix to invert.
.IP \fItransform_return\fP 1i
The inverse transformation.
.SH RETURNS
.LP
Zero if successful; non-zero if unsuccessful.
.SH DESCRIPTION
.\" indexing
.IX PEXInvertMatrix2D
.IX "Utility Functions" PEXInvertMatrix2D
.LP
This function computes the inverse of a 2D transformation
matrix.
.LP
An unsuccessful status is returned if the matrix is non-invertible.
.LP
The two arguments may be the same variable, in which case the inversion is
performed in-place, overwriting the original transform.
.SH ERRORS
None
.SH SEE ALSO
.LP
.nf
.BR PEXInvertMatrix (3)
.fi