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* gcc.c-torture/execute/arith-rand-ll.c: New test.

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From-SVN: r55136
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J"orn Rennecke 2002-07-01 15:12:49 +00:00 committed by Joern Rennecke
parent e34cabb3b7
commit 03c5327857
2 changed files with 118 additions and 0 deletions
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4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
Mon Jul 1 12:51:05 2002 J"orn Rennecke <joern.rennecke@superh.com>
* gcc.c-torture/execute/arith-rand-ll.c: New test.
2002-07-01 Neil Booth <neil@daikokuya.co.uk>
* gcc.dg/cpp/trad/escaped-nl.c: New test.

114
gcc/testsuite/gcc.c-torture/execute/arith-rand-ll.c Normal file
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long long
simple_rand ()
{
static unsigned long long seed = 47114711;
unsigned long long this = seed * 1103515245 + 12345;
seed = this;
return this >> 8;
}
unsigned long long int
random_bitstring ()
{
unsigned long long int x;
int n_bits;
long long ran;
int tot_bits = 0;
x = 0;
for (;;)
{
ran = simple_rand ();
n_bits = (ran >> 1) % 16;
tot_bits += n_bits;
if (n_bits == 0)
return x;
else
{
x <<= n_bits;
if (ran & 1)
x |= (1 << n_bits) - 1;
if (tot_bits > 8 * sizeof (long long) + 6)
return x;
}
}
}
#define ABS(x) ((x) >= 0 ? (x) : -(x))
main ()
{
long long int i;
for (i = 0; i < 10000; i++)
{
unsigned long long x, y;
x = random_bitstring ();
y = random_bitstring ();
if (sizeof (int) == sizeof (long long))
goto save_time;
{ unsigned long long xx = x, yy = y, r1, r2;
if (yy == 0) continue;
r1 = xx / yy;
r2 = xx % yy;
if (r2 >= yy || r1 * yy + r2 != xx)
abort ();
}
{ signed long long xx = x, yy = y, r1, r2;
if ((unsigned long long) xx << 1 == 0 && yy == -1)
continue;
r1 = xx / yy;
r2 = xx % yy;
if (ABS (r2) >= (unsigned long long) ABS (yy) || (signed long long) (r1 * yy + r2) != xx)
abort ();
}
save_time:
{ unsigned int xx = x, yy = y, r1, r2;
if (yy == 0) continue;
r1 = xx / yy;
r2 = xx % yy;
if (r2 >= yy || r1 * yy + r2 != xx)
abort ();
}
{ signed int xx = x, yy = y, r1, r2;
if ((unsigned int) xx << 1 == 0 && yy == -1)
continue;
r1 = xx / yy;
r2 = xx % yy;
if (ABS (r2) >= (unsigned int) ABS (yy) || (signed int) (r1 * yy + r2) != xx)
abort ();
}
{ unsigned short xx = x, yy = y, r1, r2;
if (yy == 0) continue;
r1 = xx / yy;
r2 = xx % yy;
if (r2 >= yy || r1 * yy + r2 != xx)
abort ();
}
{ signed short xx = x, yy = y, r1, r2;
r1 = xx / yy;
r2 = xx % yy;
if (ABS (r2) >= (unsigned short) ABS (yy) || (signed short) (r1 * yy + r2) != xx)
abort ();
}
{ unsigned char xx = x, yy = y, r1, r2;
if (yy == 0) continue;
r1 = xx / yy;
r2 = xx % yy;
if (r2 >= yy || r1 * yy + r2 != xx)
abort ();
}
{ signed char xx = x, yy = y, r1, r2;
r1 = xx / yy;
r2 = xx % yy;
if (ABS (r2) >= (unsigned char) ABS (yy) || (signed char) (r1 * yy + r2) != xx)
abort ();
}
}
exit (0);
}