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/* $Id: lshift-type.c 53089 2012-07-06 11:18:26Z vinc17/ypig $
Tests on left-shift type, written by Vincent Lefevre <vincent@vinc17.net>.
ISO C99 TC3 says: [6.5.7#3] "The integer promotions are performed on
each of the operands. The type of the result is that of the promoted
left operand."
*/
#include <stdio.h>
#define PTYPE(M) ((M) < 0 || -(M) < 0 ? -1 : 1) * (int) sizeof((M)+0)
#define CHECK(X,T) check(#X, PTYPE(X), PTYPE((X) << (T) 1))
#define TEST1(X,T) do { CHECK(X,T); CHECK(X,unsigned T); } while (0)
#define TEST2(X) \
do \
{ \
TEST1((X),short); \
TEST1((X),int); \
TEST1((X),long); \
TEST1((X),long long); \
} \
while (0)
#define TEST3(X,T) do { TEST2((T)(X)); TEST2((unsigned T)(X)); } while (0)
#define TEST4(X) \
do \
{ \
TEST3((X),short); \
TEST3((X),int); \
TEST3((X),long); \
TEST3((X),long long); \
} \
while (0)
static int debug, nfailed = 0;
static void check (const char *s, int arg1, int shift)
{
int failed = arg1 != shift;
if (debug || failed)
printf ("%s %d %d\n", s, arg1, shift);
nfailed += failed;
}
int main (int argc, char **argv)
{
debug = argc > 1;
TEST4(1);
TEST4(-1);
printf ("%d test(s) failed\n", nfailed);
return nfailed != 0;
}
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