ref: 72d686424d6fccfdf180946efa3bdd9eb0746997
dir: /tests/libc/execute/0006-limits.c/
#include <limits.h> #include <stdio.h> /* * This test assumes that CHAR_BIT is the size of every * unit returned by sizeof. It also assumes 2 complement. */ /* output: test1 test2 test3 end: */ void test1() { puts("test1"); if (CHAR_BIT < 8 || CHAR_MAX < 127 || CHAR_MIN > 0 || CHAR_MAX != SCHAR_MAX && CHAR_MAX != UCHAR_MAX) puts("wrong char definition"); if (SCHAR_MAX < 127 || CHAR_MIN > -127) puts("wrong signed char definition"); if (UCHAR_MAX < 255 || UCHAR_MAX <= 0) puts("wrong unsigned char definition"); if (SHRT_MAX < 32767 || SHRT_MIN > -32767 || USHRT_MAX < 65535 || USHRT_MAX <= 0) puts("wrong short definition"); if (INT_MAX < 32767 || INT_MIN > -32767 || UINT_MAX < 65535 || UINT_MAX <= 0 || INT_MAX < SCHAR_MAX || INT_MIN > SCHAR_MIN || UINT_MAX < UCHAR_MAX || INT_MAX < SHRT_MAX || INT_MIN > SHRT_MIN || UINT_MAX < USHRT_MAX) puts("wrong int definition"); if (LONG_MAX < 2147483647 || LONG_MIN > -2147483647 || ULONG_MAX < 4294967295 || ULONG_MAX <= 0 || LONG_MAX < SCHAR_MAX || LONG_MIN > SCHAR_MIN || ULONG_MAX < UCHAR_MAX || LONG_MAX < SHRT_MAX || LONG_MIN > SHRT_MIN || ULONG_MAX < USHRT_MAX || LONG_MAX < INT_MAX || LONG_MIN > INT_MIN || ULONG_MAX < UINT_MAX) puts("wrong long definition"); if (LONG_MAX < 9223372036854775807 || LONG_MIN > -9223372036854775807 || ULONG_MAX < 18446744073709551615 || ULONG_MAX <= 0 || LONG_MAX < SCHAR_MAX || LONG_MIN > SCHAR_MIN || ULONG_MAX < UCHAR_MAX || LONG_MAX < SHRT_MAX || LONG_MIN > SHRT_MIN || ULONG_MAX < USHRT_MAX || LONG_MAX < LONG_MAX || LONG_MIN > LONG_MIN || ULONG_MAX < ULONG_MAX) puts("wrong long definition"); if (LLONG_MAX < 9223372036854775807 || LLONG_MIN > -9223372036854775807 || ULLONG_MAX < 18446744073709551615 || ULLONG_MAX <= 0 || LLONG_MAX < SCHAR_MAX || LLONG_MIN > SCHAR_MIN || ULLONG_MAX < UCHAR_MAX || LLONG_MAX < SHRT_MAX || LLONG_MIN > SHRT_MIN || ULLONG_MAX < USHRT_MAX || LLONG_MAX < LONG_MAX || LLONG_MIN > LONG_MIN || ULLONG_MAX < ULONG_MAX) puts("wrong long long definition"); if (MB_LEN_MAX < sizeof(char)) puts("wrong value for MB_LEN_MAX"); } void test2() { char c; int i; puts("test2"); if ('\xff' > 0) { for (c = i = 0; i < CHAR_BIT; i++) { c <<= 1; c |= 1; } if (c != CHAR_MAX) printf("wrong char max %d-%d", c, CHAR_MAX); if (CHAR_MIN != 0) printf("wrong char min %d-%d", c, CHAR_MIN); } else { for (c = i = 0; i < CHAR_BIT -1; i++) { c <<= 1; c |= 1; } if (c != CHAR_MAX) printf("wrong char max %d-%d", c, CHAR_MAX); c = -c - 1; if (c != CHAR_MIN) printf("wrong char min %d-%d", c, CHAR_MIN); } } #define SMAX(t) for (t = n = 0; n < sizeof(t)*CHAR_BIT -1; n++) {t <<= 1; t |= 1;} #define UMAX(t) for (t = n = 0; n < sizeof(t)*CHAR_BIT; n++) {t <<= 1; t |= 1;} void test3() { signed char sc; unsigned char uc; int i, n; unsigned u; long l; unsigned long ul; long long ll; unsigned long long ull; puts("test3"); SMAX(sc); if (sc != SCHAR_MAX) printf("wrong signed char max %d %d\n", sc, SCHAR_MAX); sc = -sc - 1; if (sc != SCHAR_MIN) printf("wrong signed char min %d %d\n", sc, SCHAR_MIN); UMAX(uc); if (uc != UCHAR_MAX) printf("wrong unsigned char max %u %u", uc, UCHAR_MAX); SMAX(i); if (i != INT_MAX) printf("wrong int max %d %d\n", i, INT_MAX); i = -i - 1; if (i != INT_MIN) printf("wrong int min %d %d\n", i, INT_MIN); UMAX(u); if (u != UINT_MAX) printf("wrong unsigned int max %u %u\n", u, UINT_MAX); SMAX(l); if (l != LONG_MAX) printf("wrong long max %ld %ld\n", l, (long) LONG_MAX); l = -l - 1; if (l != LONG_MIN) printf("wrong long max %ld %ld\n", l, (long) LONG_MIN); UMAX(ul); if (ul != ULONG_MAX) printf("wrong int max %lu %lu\n", ul, (unsigned long) ULONG_MAX); SMAX(ll); if (ll != LLONG_MAX) printf("wrong llong max %lld %lld\n", ll, (long long) LLONG_MAX); ll = -ll - 1; if (ll != LLONG_MIN) printf("wrong llong min %lld %lld\n", ll, (long long) LLONG_MIN); UMAX(ull); if (ull != ULLONG_MAX) printf("wrong ullong max %llu %llu\n", ull, (unsigned long long) ULLONG_MAX); } int main() { test1(); test2(); test3(); return 0; }