# Synopsis

PDX_MSGT mth_SolveTwoLinearEqs(double a[2][2], double rhs[2], double tol, double sol[2])

# Purpose

Solve two linear equations in two unknowns.

# Description

This routine solves a system of two linear equations in two unknowns.

# Input

## a

The 2x2 coefficient array.

## rhs

The right hand side of the system (contents not overwritten unless (rhs) = (sol)).

## tol

The zero tolerance check (for singular system).

# Output

## sol

The solution. May occupy the same memory as rhs.

# Return

          MTH_NOERR
          MTH_SINGULAREQS
          .fi