Add a test

Author: Smit-create

integration_tests/CMakeLists.txt

@@ -494,6 +494,7 @@ RUN(NAME expr_19             LABELS cpython llvm c)
 RUN(NAME expr_20             LABELS cpython llvm c)
 RUN(NAME expr_21             LABELS cpython llvm c)
 RUN(NAME expr_22             LABELS cpython llvm c)
+RUN(NAME expr_23             LABELS cpython llvm c)
 
 RUN(NAME expr_01u            LABELS cpython llvm c NOFAST)
 RUN(NAME expr_02u            LABELS cpython llvm c NOFAST)

integration_tests/expr_23.py

@@ -0,0 +1,23 @@
+from lpython import f32, i32
+
+def flip_sign_check():
+    x: f32
+    eps: f32 = f32(1e-5)
+
+    number: i32 = 123
+    x = f32(5.5)
+
+    if (number%2 == 1):
+        x = -x
+
+    assert abs(x - f32(-5.5)) < eps
+
+    number = 124
+    x = f32(5.5)
+
+    if (number%2 == 1):
+        x = -x
+
+    assert abs(x - f32(5.5)) < eps
+
+flip_sign_check()