int v14_test_async_tx_get_bit(void *user_data)
{
async_tx_state_t *s;
int bit;
int parity_bit;
static int destuff = 0;
/* Special routine to test V.14 rate adaption, by randomly skipping
stop bits. */
s = (async_tx_state_t *) user_data;
if (s->bitpos == 0)
{
s->byte_in_progress = s->get_byte(s->user_data);
s->byte_in_progress &= (0xFFFF >> (16 - s->data_bits));
if (s->parity)
{
parity_bit = parity8(s->byte_in_progress);
if (s->parity == ASYNC_PARITY_ODD)
parity_bit ^= 1;
s->byte_in_progress |= (parity_bit << s->data_bits);
s->byte_in_progress |= (0xFFFF << (s->data_bits + 1));
}
else
{
s->byte_in_progress |= (0xFFFF << s->data_bits);
}
/* Start bit */
bit = 0;
s->bitpos++;
}
int main(int argc, char *argv[])
{
int i;
uint32_t x;
uint8_t ax;
uint8_t bx;
uint16_t ax16;
uint16_t bx16;
uint32_t ax32;
uint32_t bx32;
for (i = 0, x = 0; i < 100000; i++)
{
ax = top_bit_dumb(x);
bx = top_bit(x);
if (ax != bx)
{
printf("Test failed: top bit mismatch 0x%" PRIx32 " -> %u %u\n", x, ax, bx);
exit(2);
}
ax = bottom_bit_dumb(x);
bx = bottom_bit(x);
if (ax != bx)
{
printf("Test failed: bottom bit mismatch 0x%" PRIx32 " -> %u %u\n", x, ax, bx);
exit(2);
}
x = rand();
}
for (i = 0; i < 256; i++)
{
ax = bit_reverse8_dumb(i);
bx = bit_reverse8(i);
if (ax != bx)
{
printf("Test failed: bit reverse 8 - %02x %02x %02x\n", i, ax, bx);
exit(2);
}
}
for (i = 0; i < 1000000; i++)
from[i] = rand();
bit_reverse(to, from, 1000000);
for (i = 0; i < 1000000; i++)
{
if (bit_reverse8_dumb(from[i]) != to[i])
{
printf("Test failed: bit reverse - at %d, %02x %02x %02x\n", i, from[i], bit_reverse8(from[i]), to[i]);
exit(2);
}
}
for (i = 0; i < 256; i++)
{
x = i | (((i + 1) & 0xFF) << 8) | (((i + 2) & 0xFF) << 16) | (((i + 3) & 0xFF) << 24);
ax32 = bit_reverse_4bytes_dumb(x);
bx32 = bit_reverse_4bytes(x);
if (ax32 != bx32)
{
printf("Test failed: bit reverse 4 bytes - %" PRIx32 " %" PRIx32 " %" PRIx32 "\n", x, ax32, bx32);
exit(2);
}
}
for (i = 0; i < 65536; i++)
{
ax16 = bit_reverse16_dumb(i);
bx16 = bit_reverse16(i);
if (ax16 != bx16)
{
printf("Test failed: bit reverse 16 - %x %x %x\n", i, ax16, bx16);
exit(2);
}
}
for (i = 0; i < 0x7FFFFF00; i += 127)
{
ax32 = bit_reverse32_dumb(i);
bx32 = bit_reverse32(i);
if (ax32 != bx32)
{
printf("Test failed: bit reverse 32 - %d %" PRIx32 " %" PRIx32 "\n", i, ax32, bx32);
exit(2);
}
}
for (i = 0; i < 256; i++)
{
ax = parity8(i);
bx = parity8_dumb(i);
if (ax != bx)
{
printf("Test failed: parity 8 - %x %x %x\n", i, ax, bx);
exit(2);
}
}
for (i = -1; i < 32; i++)
{
ax32 = most_significant_one32(1 << i);
if (ax32 != (1 << i))
{
printf("Test failed: most significant one 32 - %x %" PRIx32 " %x\n", i, ax32, (1 << i));
exit(2);
}
ax32 = least_significant_one32(1 << i);
if (ax32 != (1 << i))
{
printf("Test failed: least significant one 32 - %x %" PRIx32 " %x\n", i, ax32, (1 << i));
exit(2);
}
}
for (i = 0x80000000; i < 0x800FFFFF; i++)
{
ax = one_bits32_dumb(i);
bx = one_bits32(i);
if (ax != bx)
{
printf("Test failed: one bits - %d, %x %x\n", i, ax, bx);
exit(2);
}
}
printf("Tests passed.\n");
return 0;
}