Vrms2int - convert RMS velocity to interval velocity

Vrms2int < vrms.H weight= vrms= niter= eps= > vint.H

Least-square inversion, preconditioned by integration.

from history	integer	n1, n2
from par	integer	niter	number of iterations
	real	eps	scaling for preconditioning
	filename	weight	data weight for inversion
	filename	vrms	predicted RMS velocity

Modules: vrms2int.r90