= Change the amount of HF exchange in functionals =
Only for BLYP series:

{{{
$scf
RKS
DFT
# new functional with cX*HF+(1-cX)*B88
VBLYP
hfexchange
0.0
charge
0
spin
1
THRESHCONV
1.d-12 1.d-10
OPTSCR
1
$end
}}}
||HF c_X ||Etot(a.u.) ||w1(eV) ||w2(eV) ||
||0.0 ||-114.58954137 ||3.1626 ||5.5590 ||