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