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/* Test arithmetics on bitfields. */
extern void abort (void);
extern void exit (int);
unsigned int
myrnd (void)
{
static unsigned int s = 1388815473;
s *= 1103515245;
s += 12345;
return (s / 65536) % 2048;
}
#define T(S) \
struct S s##S; \
struct S retme##S (struct S x) \
{ \
return x; \
} \
\
unsigned int fn1##S (unsigned int x) \
{ \
struct S y = s##S; \
y.k += x; \
y = retme##S (y); \
return y.k; \
} \
\
unsigned int fn2##S (unsigned int x) \
{ \
struct S y = s##S; \
y.k += x; \
y.k %= 15; \
return y.k; \
} \
\
unsigned int retit##S (void) \
{ \
return s##S.k; \
} \
\
unsigned int fn3##S (unsigned int x) \
{ \
s##S.k += x; \
return retit##S (); \
} \
\
void test##S (void) \
{ \
int i; \
unsigned int mask, v, a, r; \
struct S x; \
char *p = (char *) &s##S; \
for (i = 0; i < sizeof (s##S); ++i) \
*p++ = myrnd (); \
if (__builtin_classify_type (s##S.l) == 8) \
s##S.l = 5.25; \
s##S.k = -1; \
mask = s##S.k; \
v = myrnd (); \
a = myrnd (); \
s##S.k = v; \
x = s##S; \
r = fn1##S (a); \
if (x.i != s##S.i || x.j != s##S.j \
|| x.k != s##S.k || x.l != s##S.l \
|| ((v + a) & mask) != r) \
abort (); \
v = myrnd (); \
a = myrnd (); \
s##S.k = v; \
x = s##S; \
r = fn2##S (a); \
if (x.i != s##S.i || x.j != s##S.j \
|| x.k != s##S.k || x.l != s##S.l \
|| ((((v + a) & mask) % 15) & mask) != r) \
abort (); \
v = myrnd (); \
a = myrnd (); \
s##S.k = v; \
x = s##S; \
r = fn3##S (a); \
if (x.i != s##S.i || x.j != s##S.j \
|| s##S.k != r || x.l != s##S.l \
|| ((v + a) & mask) != r) \
abort (); \
}
struct A { unsigned int i : 6, l : 1, j : 10, k : 15; }; T(A)
struct B { unsigned int i : 6, j : 11, k : 15; unsigned int l; }; T(B)
struct C { unsigned int l; unsigned int i : 6, j : 11, k : 15; }; T(C)
struct D { unsigned long long l : 6, i : 6, j : 23, k : 29; }; T(D)
struct E { unsigned long long l, i : 12, j : 23, k : 29; }; T(E)
struct F { unsigned long long i : 12, j : 23, k : 29, l; }; T(F)
struct G { unsigned int i : 12, j : 13, k : 7; unsigned long long l; }; T(G)
struct H { unsigned int i : 12, j : 11, k : 9; unsigned long long l; }; T(H)
struct I { unsigned short i : 1, j : 6, k : 9; unsigned long long l; }; T(I)
struct J { unsigned short i : 1, j : 8, k : 7; unsigned short l; }; T(J)
struct K { unsigned int k : 6, l : 1, j : 10, i : 15; }; T(K)
struct L { unsigned int k : 6, j : 11, i : 15; unsigned int l; }; T(L)
struct M { unsigned int l; unsigned int k : 6, j : 11, i : 15; }; T(M)
struct N { unsigned long long l : 6, k : 6, j : 23, i : 29; }; T(N)
struct O { unsigned long long l, k : 12, j : 23, i : 29; }; T(O)
struct P { unsigned long long k : 12, j : 23, i : 29, l; }; T(P)
struct Q { unsigned int k : 12, j : 13, i : 7; unsigned long long l; }; T(Q)
struct R { unsigned int k : 12, j : 11, i : 9; unsigned long long l; }; T(R)
struct S { unsigned short k : 1, j : 6, i : 9; unsigned long long l; }; T(S)
struct T { unsigned short k : 1, j : 8, i : 7; unsigned short l; }; T(T)
struct U { unsigned short j : 6, k : 1, i : 9; unsigned long long l; }; T(U)
struct V { unsigned short j : 8, k : 1, i : 7; unsigned short l; }; T(V)
struct W { long double l; unsigned int k : 12, j : 13, i : 7; }; T(W)
struct X { unsigned int k : 12, j : 13, i : 7; long double l; }; T(X)
struct Y { unsigned int k : 12, j : 11, i : 9; long double l; }; T(Y)
struct Z { long double l; unsigned int j : 13, i : 7, k : 12; }; T(Z)
int
main (void)
{
testA ();
testB ();
testC ();
testD ();
testE ();
testF ();
testG ();
testH ();
testI ();
testJ ();
testK ();
testL ();
testM ();
testN ();
testO ();
testP ();
testQ ();
testR ();
testS ();
testT ();
testU ();
testV ();
testW ();
testX ();
testY ();
testZ ();
exit (0);
}
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