def bond_fsas
import bend-prot@0.1.0.0/bonded.bend as Bondedimport Base
import bend-prot@0.1.0.0/geom.bend as G
279def bond_fsas(+s: U32, sa: U32, sb: U32, +pa: G.Vec3, +pb: G.Vec3, +k: F32, +r0: F32) -> G.Vec3:
280 bond_fpick(U32.is_eq(s, sa), U32.is_eq(s, sb), bond_fpair(G.Vec3.sub(pa, pb), G.Vec3.dist2(pa, pb), k, r0))