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c92fb33b42
2004-11-04 Matthias Clasen <mclasen@redhat.com> * glib/gstrfuncs.c (g_ascii_strtod): Handle numbers like 1e1, nan, -infinity. Also try harder to preserve errno. (#156421, Morten Welinder) * tests/strtod-test.c: Add testcases.
90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
#undef G_DISABLE_ASSERT
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#undef G_LOG_DOMAIN
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/* for NAN and INFINITY */
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#define _ISOC99_SOURCE
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#include <glib.h>
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#include <locale.h>
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#include <string.h>
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#include <stdlib.h>
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#include <math.h>
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void
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test_string (char *number, double res, gboolean check_end, int correct_len)
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{
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double d;
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char *locales[] = {"sv_SE", "en_US", "fa_IR", "C", "ru_RU"};
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int l;
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char *end;
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char *dummy;
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/* we try a copy of number, with some free space for malloc before that.
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* This is supposed to smash the some wrong pointer calculations. */
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dummy = g_malloc (100000);
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number = g_strdup (number);
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g_free (dummy);
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for (l = 0; l < G_N_ELEMENTS (locales); l++)
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{
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setlocale (LC_NUMERIC, locales[l]);
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d = g_ascii_strtod (number, &end);
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if ((isfinite(d) && isfinite(res) && d != res) ||
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(isnan (d) != isnan (res)) ||
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(isinf (d) != isinf (res)))
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{
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g_print ("g_ascii_strtod on \"%s\" for locale %s failed\n", number, locales[l]);
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g_print ("expected %lf (nan %d inf %d) actual %lf (nan %d inf %d)\n",
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res, isnan (res), isinf (res),
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d, isnan (d), isinf (d));
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}
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if (check_end && end - number != correct_len)
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g_print ("g_ascii_strtod on \"%s\" for locale %s endptr was wrong, leftover: %s\n", number, locales[l], end);
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if (!check_end && end - number != strlen (number))
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g_print ("g_ascii_strtod on \"%s\" for locale %s endptr was wrong, leftover: %s\n", number, locales[l], end);
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}
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g_free (number);
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}
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int
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main ()
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{
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gdouble d;
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char buffer[G_ASCII_DTOSTR_BUF_SIZE];
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test_string ("123.123", 123.123, FALSE, 0);
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test_string ("123.123e2", 123.123e2, FALSE, 0);
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test_string ("123.123e-2", 123.123e-2, FALSE, 0);
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test_string ("-123.123", -123.123, FALSE, 0);
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test_string ("-123.123e2", -123.123e2, FALSE, 0);
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test_string ("-123.123e-2", -123.123e-2, FALSE, 0);
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test_string ("5.4", 5.4, TRUE, 3);
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test_string ("5.4,5.5", 5.4, TRUE, 3);
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test_string ("5,4", 5.0, TRUE, 1);
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/* the following are for #156421 */
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test_string ("1e1", 1e1, FALSE, 0);
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test_string ("NAN", NAN, FALSE, 0);
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test_string ("-nan", -NAN, FALSE, 0);
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test_string ("INF", INFINITY, FALSE, 0);
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test_string ("-infinity", -INFINITY, FALSE, 0);
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d = 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.0;
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g_assert (d == g_ascii_strtod (g_ascii_dtostr (buffer, sizeof (buffer), d), NULL));
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d = -179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.0;
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g_assert (d == g_ascii_strtod (g_ascii_dtostr (buffer, sizeof (buffer), d), NULL));
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d = pow (2.0, -1024.1);
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g_assert (d == g_ascii_strtod (g_ascii_dtostr (buffer, sizeof (buffer), d), NULL));
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d = -pow (2.0, -1024.1);
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g_assert (d == g_ascii_strtod (g_ascii_dtostr (buffer, sizeof (buffer), d), NULL));
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return 0;
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}
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