vif: vif (vintage fortran compiler) vif: vif: VIF is an 'early FORTRAN' dialect, encompassing a large subset vif: of FORTRAN II/IV and FORTRAN 66/77. VIF is a front end using a gcc vif: compatible C99 compiler as back end. VIF uses gcc extensions to C, and vif: also gcc's libquadmath. vif: vif: vif: vif: vif: