2 files changed, 70 insertions, 3 deletions
diff --git a/tests/fstar/arrays/Arrays.Clauses.Template.fst b/tests/fstar/arrays/Arrays.Clauses.Template.fst
index c189e41e..e695b89b 100644
--- a/tests/fstar/arrays/Arrays.Clauses.Template.fst
+++ b/tests/fstar/arrays/Arrays.Clauses.Template.fst
@@ -6,6 +6,25 @@ open Arrays.Types
 
 #set-options "--z3rlimit 50 --fuel 1 --ifuel 1"
 
+(** [arrays::sum]: decreases clause
+    Source: 'tests/src/arrays.rs', lines 242:0-250:1 *)
+unfold
+let sum_loop_decreases (s : slice u32) (sum1 : u32) (i : usize) : nat =
+  admit ()
+
+(** [arrays::sum2]: decreases clause
+    Source: 'tests/src/arrays.rs', lines 252:0-261:1 *)
+unfold
+let sum2_loop_decreases (s : slice u32) (s2 : slice u32) (sum1 : u32)
+  (i : usize) : nat =
+  admit ()
+
+(** [arrays::zero_slice]: decreases clause
+    Source: 'tests/src/arrays.rs', lines 303:0-310:1 *)
+unfold
+let zero_slice_loop_decreases (a : slice u8) (i : usize) (len : usize) : nat =
+  admit ()
+
 (** [arrays::iter_mut_slice]: decreases clause
     Source: 'tests/src/arrays.rs', lines 312:0-318:1 *)
 unfold
diff --git a/tests/fstar/arrays/Arrays.Funs.fst b/tests/fstar/arrays/Arrays.Funs.fst
index f77b9c40..6196e3b7 100644
--- a/tests/fstar/arrays/Arrays.Funs.fst
+++ b/tests/fstar/arrays/Arrays.Funs.fst
@@ -306,15 +306,49 @@ let take_array_t (a : array aB_t 2) : result unit =
 let non_copyable_array : result unit =
   take_array_t (mk_array aB_t 2 [ AB_A; AB_B ])
 
+(** [arrays::sum]: loop 0:
+    Source: 'tests/src/arrays.rs', lines 242:0-250:1 *)
+let rec sum_loop
+  (s : slice u32) (sum1 : u32) (i : usize) :
+  Tot (result u32) (decreases (sum_loop_decreases s sum1 i))
+  =
+  let i1 = slice_len u32 s in
+  if i < i1
+  then
+    let* i2 = slice_index_usize u32 s i in
+    let* sum3 = u32_add sum1 i2 in
+    let* i3 = usize_add i 1 in
+    sum_loop s sum3 i3
+  else Ok sum1
+
 (** [arrays::sum]:
     Source: 'tests/src/arrays.rs', lines 242:0-242:28 *)
 let sum (s : slice u32) : result u32 =
-  admit
+  sum_loop s 0 0
+
+(** [arrays::sum2]: loop 0:
+    Source: 'tests/src/arrays.rs', lines 252:0-261:1 *)
+let rec sum2_loop
+  (s : slice u32) (s2 : slice u32) (sum1 : u32) (i : usize) :
+  Tot (result u32) (decreases (sum2_loop_decreases s s2 sum1 i))
+  =
+  let i1 = slice_len u32 s in
+  if i < i1
+  then
+    let* i2 = slice_index_usize u32 s i in
+    let* i3 = slice_index_usize u32 s2 i in
+    let* i4 = u32_add i2 i3 in
+    let* sum3 = u32_add sum1 i4 in
+    let* i5 = usize_add i 1 in
+    sum2_loop s s2 sum3 i5
+  else Ok sum1
 
 (** [arrays::sum2]:
     Source: 'tests/src/arrays.rs', lines 252:0-252:41 *)
 let sum2 (s : slice u32) (s2 : slice u32) : result u32 =
-  admit
+  let i = slice_len u32 s in
+  let i1 = slice_len u32 s2 in
+  if not (i = i1) then Fail Failure else sum2_loop s s2 0 0
 
 (** [arrays::f0]:
     Source: 'tests/src/arrays.rs', lines 263:0-263:11 *)
@@ -380,10 +414,24 @@ let ite : result unit =
   let* _ = to_slice_mut_back s1 in
   Ok ()
 
+(** [arrays::zero_slice]: loop 0:
+    Source: 'tests/src/arrays.rs', lines 303:0-310:1 *)
+let rec zero_slice_loop
+  (a : slice u8) (i : usize) (len : usize) :
+  Tot (result (slice u8)) (decreases (zero_slice_loop_decreases a i len))
+  =
+  if i < len
+  then
+    let* (_, index_mut_back) = slice_index_mut_usize u8 a i in
+    let* i1 = usize_add i 1 in
+    let* a1 = index_mut_back 0 in
+    zero_slice_loop a1 i1 len
+  else Ok a
+
 (** [arrays::zero_slice]:
     Source: 'tests/src/arrays.rs', lines 303:0-303:31 *)
 let zero_slice (a : slice u8) : result (slice u8) =
-  admit
+  let len = slice_len u8 a in zero_slice_loop a 0 len
 
 (** [arrays::iter_mut_slice]: loop 0:
     Source: 'tests/src/arrays.rs', lines 312:0-318:1 *)