Use fdiv in the tests for the deduce_bound

tests/python/unittest/test_arith_deduce_bound.py

@@ -35,11 +35,11 @@ def test_deduce():
     d_s = tvm.arith.IntervalSet(-3, -1)
     zero = tvm.const(0, "int32")
 
-    tdiv = tvm.truncdiv
+    fdiv = tvm.floordiv
 
     e0 = (-b)*a+c-d
     res0 = tvm.arith.DeduceBound(a, e0>=0, {b: b_s, c: c_s, d: d_s}, {})
-    ans0 = (tdiv(d - c, b*-1) + (-1))
+    ans0 = fdiv(d - c, b*-1)
     assert_expr_equal(res0.max_value, ans0)
 
     # expression containing variable a is on rhs
@@ -48,7 +48,7 @@ def test_deduce():
 
     e0 = d*a+c-d
     res0 = tvm.arith.DeduceBound(a, e0>=0, {b: b_s, c: c_s, d: d_s}, {})
-    ans0 = (tdiv(d-c,d) - 1)
+    ans0 = fdiv(d-c, d)
     assert_expr_equal(res0.max_value, ans0)
 
     # expression containing variable a is on rhs
@@ -58,7 +58,7 @@ def test_deduce():
 
     e1 = (a*4+b < c)
     res1 = tvm.arith.DeduceBound(a, e1, {b: b_s, c: c_s, d: d_s}, {})
-    ans1 = (tdiv((c - b) + -1,4) -1)
+    ans1 = fdiv(c-1-b, 4)
     assert_expr_equal(res1.max_value, ans1)
 
 
@@ -81,7 +81,7 @@ def test_deduce():
 
     e3 = (-b)+a*c-d
     res3 = tvm.arith.DeduceBound(a, e3>=0, {b: b_s, c: c_s, d: d_s}, {b: b_s, d: d_s})
-    ans3 = tdiv(2,c)+1
+    ans3 = fdiv(2,c)+1
     assert str(tvm.ir_pass.Simplify(res3.min_value)) == str(ans3)
 
     res3 = tvm.arith.DeduceBound(a, zero <= e3, {b: b_s, c: c_s, d: d_s}, {b: b_s, d: d_s})