[wp] some more tests

src/plugins/wp/tests/wp_acsl/bitwise.i

@@ -138,5 +138,9 @@ unsigned char cast_uchar(int x) {
   //@ check bit_set_unset2: ok: (c & 0x77) == 0x66 && (x & 5) == (x & 7) ==> (P(x & 4) <==> P(x & 6)) ;
   //@ check bit_defined: ok:  (c & 0x77) == 0x66 && (x & ~0x77) == (~0x77 & 0xFFF0) ==> (P(c)<==>P(0xE6));
   //@ check bit_defined2: ok: (c & 0x77) == 0x66 && (x & ~0x77) == (~0x77 & 0xFFF0) ==> (P(x)<==>P(0xFFE6));
+  //@ check bit_to_signed_positive: ok:  (x & 0xFF) == 0x60 ==> (P((signed char) x) <==> P(0x60));
+  //@ check bit_to_signed_positive2: ok:  (x & 0xF0) == 0x60 ==> (((signed char) x) & (1 << 10)) == 0;
+  //@ check bit_to_signed_negative: ok:  (x & 0xFF) == 0x86 ==>  (P((signed char) x) <==> P(0x86|~255));
+  //@ check bit_to_signed_negative2: ok:  (x & 0xF0) == 0x80 ==> (((signed char) x) & (1 << 10)) != 0;
   return c;
 }

src/plugins/wp/tests/wp_acsl/oracle/bitwise.res.oracle

@@ -255,6 +255,26 @@ Prove: true.
 Goal Check 'bit_defined2,ok' (file bitwise.i, line 140):
 Prove: true.
 
+------------------------------------------------------------
+
+Goal Check 'bit_to_signed_positive,ok' (file bitwise.i, line 141):
+Prove: true.
+
+------------------------------------------------------------
+
+Goal Check 'bit_to_signed_positive2,ok' (file bitwise.i, line 142):
+Prove: true.
+
+------------------------------------------------------------
+
+Goal Check 'bit_to_signed_negative,ok' (file bitwise.i, line 143):
+Prove: true.
+
+------------------------------------------------------------
+
+Goal Check 'bit_to_signed_negative2,ok' (file bitwise.i, line 144):
+Prove: true.
+
 ------------------------------------------------------------
 ------------------------------------------------------------
   Function lemma

src/plugins/wp/tests/wp_acsl/oracle_qualif/bitwise.res.oracle

@@ -2,7 +2,7 @@
 [kernel] Parsing bitwise.i (no preprocessing)
 [wp] Running WP plugin...
 [wp] Warning: Missing RTE guards
-[wp] 45 goals scheduled
+[wp] 49 goals scheduled
 [wp] [Qed] Goal typed_band_ensures : Valid
 [wp] [Qed] Goal typed_band_ensures_band0 : Valid
 [wp] [Qed] Goal typed_band_bit0_ensures_band1 : Valid
@@ -48,8 +48,12 @@
 [wp] [Qed] Goal typed_cast_uchar_check_bit_set_unset2_ok : Valid
 [wp] [Qed] Goal typed_cast_uchar_check_bit_defined_ok : Valid
 [wp] [Qed] Goal typed_cast_uchar_check_bit_defined2_ok : Valid
-[wp] Proved goals:   45 / 45
-  Qed:            42 
+[wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_positive_ok : Valid
+[wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_positive2_ok : Valid
+[wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_negative_ok : Valid
+[wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_negative2_ok : Valid
+[wp] Proved goals:   49 / 49
+  Qed:            46 
   Alt-Ergo:        3
 ------------------------------------------------------------
  Functions                 WP     Alt-Ergo  Total   Success
@@ -63,5 +67,5 @@
   band_bool                 1        1        2       100%
   bxor_bool                 1        1        2       100%
   lemma                     7        -        7       100%
-  cast_uchar                8        -        8       100%
+  cast_uchar               12        -       12       100%
 ------------------------------------------------------------