Function tcod_sys::TCOD_heightmap_lerp_hm

pub unsafe extern "C" fn TCOD_heightmap_lerp_hm(
    hm1: *const TCOD_heightmap_t, 
    hm2: *const TCOD_heightmap_t, 
    hmres: *mut TCOD_heightmap_t, 
    coef: f32
)