_lzo_config_check(void)
{
lzo_bool r = 1;
union {
lzo_xint a[2]; unsigned char b[2*sizeof(lzo_xint)];
unsigned short x[2]; lzo_uint32 y[2]; lzo_uint z[2];
} u;
lzo_voidp p;
u.a[0] = u.a[1] = 0;
p = u2p(&u, 0);
r &= ((* (lzo_bytep) p) == 0);
#if !defined(LZO_CFG_NO_CONFIG_CHECK)
#if defined(LZO_ABI_BIG_ENDIAN)
u.a[0] = u.a[1] = 0; u.b[sizeof(lzo_uint) - 1] = 128;
p = u2p(&u, 0);
r &= ((* (lzo_uintp) p) == 128);
#endif
#if defined(LZO_ABI_LITTLE_ENDIAN)
u.a[0] = u.a[1] = 0; u.b[0] = 128;
p = u2p(&u, 0);
r &= ((* (lzo_uintp) p) == 128);
#endif
#if defined(LZO_UNALIGNED_OK_2)
u.a[0] = u.a[1] = 0;
u.b[0] = 1; u.b[sizeof(unsigned short) + 1] = 2;
p = u2p(&u, 1);
r &= ((* (lzo_ushortp) p) == 0);
#endif
#if defined(LZO_UNALIGNED_OK_4)
u.a[0] = u.a[1] = 0;
u.b[0] = 3; u.b[sizeof(lzo_uint32) + 1] = 4;
p = u2p(&u, 1);
r &= ((* (lzo_uint32p) p) == 0);
#endif
#endif
return r == 1 ? LZO_E_OK : LZO_E_ERROR;
}
_lzo_config_check(void)
{
#if (LZO_CC_CLANG && (LZO_CC_CLANG >= 0x030100ul && LZO_CC_CLANG < 0x030300ul))
# if 0
/* work around a clang 3.1 and clang 3.2 compiler bug; clang 3.3 and 3.4 work */
volatile
# endif
#endif
union lzo_config_check_union u;
lzo_voidp p;
unsigned r = 1;
u.a[0] = u.a[1] = 0;
p = u2p(&u, 0);
r &= ((* (lzo_bytep) p) == 0);
#if !(LZO_CFG_NO_CONFIG_CHECK)
#if (LZO_ABI_BIG_ENDIAN)
u.a[0] = u.a[1] = 0; u.b[sizeof(lzo_uint) - 1] = 128;
p = u2p(&u, 0);
r &= ((* (lzo_uintp) p) == 128);
#endif
#if (LZO_ABI_LITTLE_ENDIAN)
u.a[0] = u.a[1] = 0; u.b[0] = 128;
p = u2p(&u, 0);
r &= ((* (lzo_uintp) p) == 128);
#endif
u.a[0] = u.a[1] = 0;
u.b[0] = 1; u.b[3] = 2;
p = u2p(&u, 1);
r &= UA_GET_NE16(p) == 0;
r &= UA_GET_LE16(p) == 0;
u.b[1] = 128;
r &= UA_GET_LE16(p) == 128;
u.a[0] = u.a[1] = 0;
u.b[0] = 3; u.b[5] = 4;
p = u2p(&u, 1);
r &= UA_GET_NE32(p) == 0;
r &= UA_GET_LE32(p) == 0;
u.b[1] = 128;
r &= UA_GET_LE32(p) == 128;
#if defined(UA_GET_NE64)
u.c[0] = u.c[1] = 0;
u.b[0] = 5; u.b[9] = 6;
p = u2p(&u, 1);
u.c[0] = u.c[1] = 0;
r &= UA_GET_NE64(p) == 0;
#if defined(UA_GET_LE64)
r &= UA_GET_LE64(p) == 0;
u.b[1] = 128;
r &= UA_GET_LE64(p) == 128;
#endif
#endif
#if defined(lzo_bitops_ctlz32)
{ unsigned i = 0; lzo_uint32_t v;
for (v = 1; v != 0 && r == 1; v <<= 1, i++) {
r &= lzo_bitops_ctlz32(v) == 31 - i;
r &= lzo_bitops_ctlz32_func(v) == 31 - i;
}}
#endif
#if defined(lzo_bitops_ctlz64)
{ unsigned i = 0; lzo_uint64_t v;
for (v = 1; v != 0 && r == 1; v <<= 1, i++) {
r &= lzo_bitops_ctlz64(v) == 63 - i;
r &= lzo_bitops_ctlz64_func(v) == 63 - i;
}}
#endif
#if defined(lzo_bitops_cttz32)
{ unsigned i = 0; lzo_uint32_t v;
for (v = 1; v != 0 && r == 1; v <<= 1, i++) {
r &= lzo_bitops_cttz32(v) == i;
r &= lzo_bitops_cttz32_func(v) == i;
}}
#endif
#if defined(lzo_bitops_cttz64)
{ unsigned i = 0; lzo_uint64_t v;
for (v = 1; v != 0 && r == 1; v <<= 1, i++) {
r &= lzo_bitops_cttz64(v) == i;
r &= lzo_bitops_cttz64_func(v) == i;
}}
#endif
#endif
LZO_UNUSED_FUNC(lzo_bitops_unused_funcs);
return r == 1 ? LZO_E_OK : LZO_E_ERROR;
}
