Remove float literals

Author: CasBex

src/common/sum_tree.jl

@@ -139,13 +139,13 @@ function correct_sample(t::SumTree, leaf_ind)
     p = t.tree[leaf_ind]
     # walk backwards until p != 0 or until leftmost leaf reached
     tmp_ind = leaf_ind
-    while p == 0f0 && (tmp_ind-1)*2 > length(t.tree)
+    while iszero(p) && (tmp_ind-1)*2 > length(t.tree)
         tmp_ind -= 1
         p = t.tree[tmp_ind]
     end
     # walk forwards until p != 0 or until rightmost leaf reached
-    p == 0f0 && (tmp_ind = leaf_ind)
-    while p == 0f0 && (tmp_ind - t.nparents) <= t.length
+    iszero(p) && (tmp_ind = leaf_ind)
+    while iszero(p) && (tmp_ind - t.nparents) <= t.length
         tmp_ind += 1
         p = t.tree[tmp_ind]
     end