!   TITLE:  ztest.mac (VERIFICATION)
!
!---------------------------------------------------------------------------
!       Rev -   03/28/2001  D. Edwards
!---------------------------------------------------------------------------
!
!   Test zero.mac
!
!   Find where x = x^2.  Arrange the equation to give: 
!
!       yzero = f(x) = x - x^2 = 0
!
!---------------------------------------------------------------------------
!
!   Usage:  zero_test,x
!
!   Arguments:
!       
!       x   =   The independent variable
!
!---------------------------------------------------------------------------
!
!   Example:    ztest,3
!
!               will return yzero = f(3)
!
!---------------------------------------------------------------------------

clear_start_new

x=arg1

yzero=x*(1-x)