Fix grouping when rounding increases number of integer digits.

1 files changed, 83 insertions, 0 deletions

diff --git a/stdio-common/tst-grouping.c b/stdio-common/tst-grouping.c
new file mode 100644
index 0000000..e8f4b8c
--- /dev/null
+++ b/stdio-common/tst-grouping.c
@@ -0,0 +1,83 @@
+/* BZ 12394, test by Bruno Haible.  */
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+static int
+do_test (void)
+{
+  char buf1[1000];
+  char buf2[1000];
+  int result = 0;
+
+  if (setlocale (LC_NUMERIC, "de_DE.UTF-8") == NULL)
+    return 1;
+
+  sprintf (buf1, "%'.2f",  999.996);
+  sprintf (buf2, "%'.2f", 1000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 2;
+
+  sprintf (buf1, "%'.2f",  999999.996);
+  sprintf (buf2, "%'.2f", 1000000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 2;
+
+  sprintf (buf1, "%'.2f",  999999999.996);
+  sprintf (buf2, "%'.2f", 1000000000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 2;
+
+  sprintf (buf1, "%'.2f",  999999999999.996);
+  sprintf (buf2, "%'.2f", 1000000000000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 2;
+
+  sprintf (buf1, "%'.2f",  999999999999999.996);
+  sprintf (buf2, "%'.2f", 1000000000000000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 2;
+
+  sprintf (buf1, "%'.5g",  999.996);
+  sprintf (buf2, "%'.5g", 1000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 4;
+
+  sprintf (buf1, "%'.4g",  9999.996);
+  sprintf (buf2, "%'.4g", 10000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 8;
+
+  sprintf (buf1, "%'.5g",  99999.996);
+  sprintf (buf2, "%'.5g", 100000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 8;
+
+  sprintf (buf1, "%'.6g",  999999.996);
+  sprintf (buf2, "%'.6g", 1000000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 8;
+
+  sprintf (buf1, "%'.7g",  9999999.996);
+  sprintf (buf2, "%'.7g", 10000000.004);
+  printf ("%d: \"%s\" vs \"%s\"\n", __LINE__, buf1, buf2);
+  if (strcmp (buf1, buf2) != 0)
+    result |= 8;
+
+  return result;
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"