pub unsafe extern "C" fn xc_gga_fxc(
p: *const xc_func_type,
np: c_ulong,
rho: *const f64,
sigma: *const f64,
v2rho2: *mut f64,
v2rhosigma: *mut f64,
v2sigma2: *mut f64
)Expand description
Evaluates the second derivative for a GGA functional