diff options
Diffstat (limited to 'strtol.c')
| -rw-r--r-- | strtol.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/strtol.c b/strtol.c new file mode 100644 index 0000000..9ccee53 --- /dev/null +++ b/strtol.c @@ -0,0 +1,86 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +/* r = place to store result + * f = function call to test (or any expression) + * x = expected result + * m = message to print on failure (with formats for r & x) +**/ + +#define TEST(r, f, x, m) ( \ +msg = #f, ((r) = (f)) == (x) || \ +(printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, #f, r, x), err++, 0) ) + +#define TEST2(r, f, x, m) ( \ +((r) = (f)) == (x) || \ +(printf(__FILE__ ":%d: %s failed (" m ")\n", __LINE__, msg, r, x), err++, 0) ) + +int test_strtol(void) +{ + int i; + long l; + unsigned long ul; + long long ll; + unsigned long long ull; + char *msg=""; + int err=0; + char *s, *c; + + TEST(l, atol("2147483647"), 2147483647L, "max 32bit signed %ld != %ld"); + + TEST(l, strtol("2147483647", 0, 0), 2147483647L, "max 32bit signed %ld != %ld"); + TEST(ul, strtoul("4294967295", 0, 0), 4294967295UL, "max 32bit unsigned %lu != %lu"); + + if (sizeof(long) == 4) { + errno = 0; + TEST(l, strtol(s="2147483648", &c, 0), 2147483647L, "uncaught overflow %ld != %ld"); + TEST2(i, c-s, 10, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + errno = 0; + TEST(l, strtol(s="-2147483649", &c, 0), -2147483647L-1, "uncaught overflow %ld != %ld"); + TEST2(i, c-s, 11, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + errno = 0; + TEST(ul, strtoul(s="4294967296", &c, 0), 4294967295UL, "uncaught overflow %lu != %lu"); + TEST2(i, c-s, 10, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + errno = 0; + TEST(ul, strtoul(s="-1", &c, 0), 4294967295UL, "uncaught overflow %lu != %lu"); + TEST2(i, c-s, 2, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + errno = 0; + TEST(ul, strtoul(s="-2", &c, 0), 4294967295UL, "uncaught overflow %lu != %lu"); + TEST2(i, c-s, 2, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + errno = 0; + TEST(ul, strtoul(s="-2147483648", &c, 0), 4294967295UL, "uncaught overflow %lu != %lu"); + TEST2(i, c-s, 11, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + errno = 0; + TEST(ul, strtoul(s="-2147483649", &c, 0), 4294967295UL, "uncaught overflow %lu != %lu"); + TEST2(i, c-s, 11, "wrong final position %d != %d"); + TEST2(i, errno, ERANGE, "missing errno %d != %d"); + } else { + TEST(i, 0, 1, "64bit tests not implemented"); + } + + TEST(l, strtol("z", 0, 36), 35, "%ld != %ld"); + TEST(l, strtol("00010010001101000101011001111000", 0, 2), 0x12345678, "%ld != %ld"); + TEST(l, strtol(s="0F5F", &c, 16), 0x0f5f, "%ld != %ld"); + + TEST(l, strtol(s="0xz", &c, 16), 0, "%ld != %ld"); + TEST2(i, c-s, 1, "wrong final position %ld != %ld"); + + TEST(l, strtol(s="0x1234", &c, 16), 0x1234, "%ld != %ld"); + TEST2(i, c-s, 6, "wrong final position %ld != %ld"); + + errno = 0; + c = NULL; + TEST(l, strtol(s="123", &c, 37), 0, "%ld != %ld"); + TEST2(i, c-s, 0, "wrong final position %d != %d"); + TEST2(i, errno, EINVAL, "%d != %d"); + + return err; +} |