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glibc/stdio-common/tstdiomisc.c
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#include <float.h> | |
#include <math.h> | |
#include <stdio.h> | |
#include <string.h> | |
#include <wchar.h> | |
static int | |
t1 (void) | |
{ | |
int n = -1; | |
sscanf ("abc ", "abc %n", &n); | |
printf ("t1: count=%d\n", n); | |
return n != 5; | |
} | |
static int | |
t2 (void) | |
{ | |
int result = 0; | |
int n; | |
long N; | |
int retval; | |
#define SCAN(INPUT, FORMAT, VAR, EXP_RES, EXP_VAL) \ | |
VAR = -1; \ | |
retval = sscanf (INPUT, FORMAT, &VAR); \ | |
printf ("sscanf (\"%s\", \"%s\", &x) => %d, x = %ld\n", \ | |
INPUT, FORMAT, retval, (long int) VAR); \ | |
result |= retval != EXP_RES || VAR != EXP_VAL | |
SCAN ("12345", "%ld", N, 1, 12345); | |
SCAN ("12345", "%llllld", N, 0, -1); | |
SCAN ("12345", "%LLLLLd", N, 0, -1); | |
SCAN ("test ", "%*s%n", n, 0, 4); | |
SCAN ("test ", "%2*s%n", n, 0, -1); | |
SCAN ("12 ", "%l2d", n, 0, -1); | |
SCAN ("12 ", "%2ld", N, 1, 12); | |
n = -1; | |
N = -1; | |
retval = sscanf ("1 1", "%d %Z", &n, &N); | |
printf ("sscanf (\"1 1\", \"%%d %%Z\", &n, &N) => %d, n = %d, N = %ld\n", \ | |
retval, n, N); \ | |
result |= retval != 1 || n != 1 || N != -1; | |
return result; | |
} | |
#if FLT_EVAL_METHOD == 2 | |
volatile long double dbl_max = LDBL_MAX; | |
# define FLT_FLT_FMT "%Lf %LF" | |
# define FLT_FLT_WFMT L"%Lf %LF" | |
#else | |
volatile double dbl_max = DBL_MAX; | |
# define FLT_FLT_FMT "%f %F" | |
# define FLT_FLT_WFMT L"%f %F" | |
#endif | |
static int | |
F (void) | |
{ | |
char buf[20]; | |
wchar_t wbuf[10]; | |
int result; | |
snprintf (buf, sizeof buf, FLT_FLT_FMT, | |
dbl_max * dbl_max - dbl_max * dbl_max, | |
dbl_max * dbl_max - dbl_max * dbl_max); | |
result = strcmp (buf, "nan NAN") != 0; | |
printf ("expected \"nan NAN\", got \"%s\"\n", buf); | |
snprintf (buf, sizeof buf, "%f %F", DBL_MAX * DBL_MAX, DBL_MAX * DBL_MAX); | |
result |= strcmp (buf, "inf INF") != 0; | |
printf ("expected \"inf INF\", got \"%s\"\n", buf); | |
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), FLT_FLT_WFMT, | |
dbl_max * dbl_max - dbl_max * dbl_max, | |
dbl_max * dbl_max - dbl_max * dbl_max); | |
result |= wcscmp (wbuf, L"nan NAN") != 0; | |
printf ("expected L\"nan NAN\", got L\"%S\"\n", wbuf); | |
swprintf (wbuf, sizeof wbuf / sizeof (wbuf[0]), L"%f %F", | |
DBL_MAX * DBL_MAX, DBL_MAX * DBL_MAX); | |
result |= wcscmp (wbuf, L"inf INF") != 0; | |
printf ("expected L\"inf INF\", got L\"%S\"\n", wbuf); | |
return result; | |
} | |
int | |
main (int argc, char *argv[]) | |
{ | |
int result = 0; | |
result |= t1 (); | |
result |= t2 (); | |
result |= F (); | |
result |= fflush (stdout) == EOF; | |
return result; | |
} |