s="memdesc:a990a046cc996cb957a94c4995bfe803a"><td class="mdescLeft">&#160;</td><td class="mdescRight">This routine computes the root of the function that is evaluated ! in the subroutine 'funcd'. It is based on the subroutine 'root' of Numerical Recipes 9.4, which makes use of a Newton-Raphson method with root bracketing. It has been modified to handle the two bra! cket endpoints carefully. The routine searches for a root in the inter! val [x1,x2] with a tolerance given by 'xacc', and returns this value as 