X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-vasnprintf-posix.c;h=aa537fbd74dd4e6da5bb28064db1126578eaf7be;hb=a9bf022b6d70c5f3a55cf5b2a2b36a4a3f96da6c;hp=e77db529ddef548d6594226af402bbb79c82c94c;hpb=57fdfd3f8ec62b105c53bcdf6f127c35c7fe7391;p=gnulib.git

diff --git a/tests/test-vasnprintf-posix.c b/tests/test-vasnprintf-posix.c
index e77db529d..aa537fbd7 100644
--- a/tests/test-vasnprintf-posix.c
+++ b/tests/test-vasnprintf-posix.c
@@ -1,5 +1,5 @@
 /* Test of POSIX compatible vasnprintf() and asnprintf() functions.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2008 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -28,6 +28,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "nan.h"
+
 #define SIZEOF(array) (sizeof (array) / sizeof (array[0]))
 #define ASSERT(expr) \
   do									     \
@@ -35,32 +37,29 @@
       if (!(expr))							     \
         {								     \
           fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+          fflush (stderr);						     \
           abort ();							     \
         }								     \
     }									     \
   while (0)
 
-/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0.  */
-#ifdef __DECC
-static double
-NaN ()
-{
-  static double zero = 0.0;
-  return zero / zero;
-}
-#else
-# define NaN() (0.0 / 0.0)
-#endif
-
 /* The SGI MIPS floating-point format does not distinguish 0.0 and -0.0.  */
 static int
 have_minus_zero ()
 {
   static double plus_zero = 0.0;
-  static double minus_zero = -0.0;
+  double minus_zero = - plus_zero;
   return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
 }
 
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+   So we use -zerod instead.  */
+double zerod = 0.0;
+
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+   So we use minus_zerol instead.  */
+long double minus_zerol = -LDBL_MIN * LDBL_MIN;
+
 /* Representation of an 80-bit 'long double' as an initializer for a sequence
    of 'unsigned int' words.  */
 #ifdef WORDS_BIGENDIAN
@@ -105,7 +104,7 @@ strisnan (const char *string, size_t start_index, size_t end_index, int uppercas
     }
   return 0;
 }
-	  
+
 static void
 test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
 {
@@ -226,7 +225,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%a %d", -0.0, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%a %d", -zerod, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0x0p+0 33") == 0);
@@ -257,7 +256,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%a %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%a %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -490,7 +489,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* FLAG_ZERO with NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050a %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050a %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     /* "0000000nan 33" is not a valid result; see
        <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */
@@ -540,7 +539,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%La %d", -0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%La %d", minus_zerol, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0x0p+0 33") == 0);
@@ -571,7 +570,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%La %d", 0.0L / 0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%La %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -906,7 +905,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* FLAG_ZERO with NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050La %d", 0.0L / 0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050La %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     /* "0000000nan 33" is not a valid result; see
        <http://lists.gnu.org/archive/html/bug-gnulib/2007-04/msg00107.html> */
@@ -1053,7 +1052,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%f %d", -0.0, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%f %d", -zerod, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0.000000 33") == 0);
@@ -1086,7 +1085,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%f %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%f %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -1179,7 +1178,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* FLAG_ZERO with NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050f %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050f %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
 	    && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -1198,6 +1197,26 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2f %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2f %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   { /* A positive number.  */
     size_t length;
     char *result =
@@ -1332,7 +1351,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%Lf %d", -0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%Lf %d", minus_zerol, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0.000000 33") == 0);
@@ -1363,10 +1382,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%Lf %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%Lf %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -1558,10 +1576,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* FLAG_ZERO with NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050Lf %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050Lf %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
 	    && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -1580,6 +1597,26 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2Lf %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2Lf %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   /* Test the support of the %F format directive.  */
 
   { /* A positive number.  */
@@ -1625,7 +1662,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%F %d", -0.0, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%F %d", -zerod, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0.000000 33") == 0);
@@ -1658,7 +1695,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%F %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%F %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 1)
@@ -1698,6 +1735,26 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2F %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2F %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   { /* A positive number.  */
     size_t length;
     char *result =
@@ -1741,7 +1798,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%LF %d", -0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%LF %d", minus_zerol, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0.000000 33") == 0);
@@ -1772,10 +1829,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%LF %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%LF %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 1)
@@ -1815,6 +1871,26 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2LF %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.2LF %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000.00 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   /* Test the support of the %e format directive.  */
 
   { /* A positive number.  */
@@ -1963,7 +2039,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%e %d", -0.0, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%e %d", -zerod, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0.000000e+00 33") == 0
@@ -1997,7 +2073,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%e %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%e %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -2108,7 +2184,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* FLAG_ZERO with NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050e %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050e %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
 	    && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -2128,12 +2204,35 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4e %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "9.9995e+02 33") == 0
+	    || strcmp (result, "9.9995e+002 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4e %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.0000e+03 33") == 0
+	    || strcmp (result, "1.0000e+003 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   { /* A positive number.  */
     size_t length;
     char *result =
       my_asnprintf (NULL, &length, "%Le %d", 12.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.275000e+01 33") == 0);
+    ASSERT (strcmp (result, "1.275000e+01 33") == 0
+	    || strcmp (result, "1.275000e+001 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2143,7 +2242,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%Le %d", 1234567.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.234567e+06 33") == 0);
+    ASSERT (strcmp (result, "1.234567e+06 33") == 0
+	    || strcmp (result, "1.234567e+006 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2232,8 +2332,16 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
 	size_t length;
 	char *result =
 	  my_asnprintf (NULL, &length, "%Le", data[k].value);
+	const char *expected = data[k].string;
 	ASSERT (result != NULL);
-	ASSERT (strcmp (result, data[k].string) == 0);
+	ASSERT (strcmp (result, expected) == 0
+		/* Some implementations produce exponents with 3 digits.  */
+		|| (strlen (result) == strlen (expected) + 1
+		    && memcmp (result, expected, strlen (expected) - 2) == 0
+		    && result[strlen (expected) - 2] == '0'
+		    && strcmp (result + strlen (expected) - 1,
+			       expected + strlen (expected) - 2)
+		       == 0));
 	ASSERT (length == strlen (result));
 	free (result);
       }
@@ -2244,7 +2352,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%Le %d", -0.03125L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-3.125000e-02 33") == 0);
+    ASSERT (strcmp (result, "-3.125000e-02 33") == 0
+	    || strcmp (result, "-3.125000e-002 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2254,7 +2363,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%Le %d", 0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "0.000000e+00 33") == 0);
+    ASSERT (strcmp (result, "0.000000e+00 33") == 0
+	    || strcmp (result, "0.000000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2262,10 +2372,11 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%Le %d", -0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%Le %d", minus_zerol, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
-      ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+	      || strcmp (result, "-0.000000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2293,10 +2404,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%Le %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%Le %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -2411,7 +2521,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%15Le %d", 1.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "   1.750000e+00 33") == 0);
+    ASSERT (strcmp (result, "   1.750000e+00 33") == 0
+	    || strcmp (result, "  1.750000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2421,7 +2532,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%-15Le %d", 1.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.750000e+00    33") == 0);
+    ASSERT (strcmp (result, "1.750000e+00    33") == 0
+	    || strcmp (result, "1.750000e+000   33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2431,7 +2543,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%+Le %d", 1.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "+1.750000e+00 33") == 0);
+    ASSERT (strcmp (result, "+1.750000e+00 33") == 0
+	    || strcmp (result, "+1.750000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2441,7 +2554,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "% Le %d", 1.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, " 1.750000e+00 33") == 0);
+    ASSERT (strcmp (result, " 1.750000e+00 33") == 0
+	    || strcmp (result, " 1.750000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2451,7 +2565,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%#Le %d", 1.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.750000e+00 33") == 0);
+    ASSERT (strcmp (result, "1.750000e+00 33") == 0
+	    || strcmp (result, "1.750000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2461,7 +2576,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%#.Le %d", 1.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "2.e+00 33") == 0);
+    ASSERT (strcmp (result, "2.e+00 33") == 0
+	    || strcmp (result, "2.e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2471,7 +2587,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%#.Le %d", 9.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.e+01 33") == 0);
+    ASSERT (strcmp (result, "1.e+01 33") == 0
+	    || strcmp (result, "1.e+001 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2481,7 +2598,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%015Le %d", 1234.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "0001.234000e+03 33") == 0);
+    ASSERT (strcmp (result, "0001.234000e+03 33") == 0
+	    || strcmp (result, "001.234000e+003 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2498,10 +2616,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* FLAG_ZERO with NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050Le %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050Le %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
 	    && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -2515,7 +2632,30 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%.Le %d", 1234.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1e+03 33") == 0);
+    ASSERT (strcmp (result, "1e+03 33") == 0
+	    || strcmp (result, "1e+003 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4Le %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "9.9995e+02 33") == 0
+	    || strcmp (result, "9.9995e+002 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4Le %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1.0000e+03 33") == 0
+	    || strcmp (result, "1.0000e+003 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2666,7 +2806,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%g %d", -0.0, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%g %d", -zerod, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0 33") == 0);
@@ -2699,7 +2839,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%g %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%g %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -2803,7 +2943,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* FLAG_ZERO with NaN.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050g %d", NaN (), 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050g %d", NaNd (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
 	    && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -2823,6 +2963,26 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.5g %d", 999.951, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.5g %d", 999.996, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   { /* A positive number.  */
     size_t length;
     char *result =
@@ -2838,7 +2998,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%Lg %d", 1234567.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.23457e+06 33") == 0);
+    ASSERT (strcmp (result, "1.23457e+06 33") == 0
+	    || strcmp (result, "1.23457e+006 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2927,8 +3088,17 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
 	size_t length;
 	char *result =
 	  my_asnprintf (NULL, &length, "%Lg", data[k].value);
+	const char *expected = data[k].string;
 	ASSERT (result != NULL);
-	ASSERT (strcmp (result, data[k].string) == 0);
+	ASSERT (strcmp (result, expected) == 0
+		/* Some implementations produce exponents with 3 digits.  */
+		|| (expected[strlen (expected) - 4] == 'e'
+		    && strlen (result) == strlen (expected) + 1
+		    && memcmp (result, expected, strlen (expected) - 2) == 0
+		    && result[strlen (expected) - 2] == '0'
+		    && strcmp (result + strlen (expected) - 1,
+			       expected + strlen (expected) - 2)
+		       == 0));
 	ASSERT (length == strlen (result));
 	free (result);
       }
@@ -2957,7 +3127,7 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   { /* Negative zero.  */
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%Lg %d", -0.0L, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%Lg %d", minus_zerol, 33, 44, 55);
     ASSERT (result != NULL);
     if (have_minus_zero ())
       ASSERT (strcmp (result, "-0 33") == 0);
@@ -2988,10 +3158,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%Lg %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%Lg %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
 	    && strisnan (result, 0, strlen (result) - 3, 0)
@@ -3166,7 +3335,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%#.Lg %d", 9.75L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1.e+01 33") == 0);
+    ASSERT (strcmp (result, "1.e+01 33") == 0
+	    || strcmp (result, "1.e+001 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -3193,10 +3363,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
   }
 
   { /* FLAG_ZERO with NaN.  */
-    static long double zero = 0.0L;
     size_t length;
     char *result =
-      my_asnprintf (NULL, &length, "%050Lg %d", zero / zero, 33, 44, 55);
+      my_asnprintf (NULL, &length, "%050Lg %d", NaNl (), 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
 	    && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -3210,7 +3379,28 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%.Lg %d", 1234.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "1e+03 33") == 0);
+    ASSERT (strcmp (result, "1e+03 33") == 0
+	    || strcmp (result, "1e+003 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with no rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.5Lg %d", 999.951L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "999.95 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  { /* Precision with rounding.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.5Lg %d", 999.996L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "1000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -3252,6 +3442,151 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     ASSERT (length == strlen (result));
     free (result);
   }
+
+  /* Test the support of the left-adjust flag.  */
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "a%*sc", -3, "b");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "ab  c") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "a%-*sc", 3, "b");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "ab  c") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "a%-*sc", -3, "b");
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "ab  c") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  /* Test the support of large precision.  */
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4000d %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.*d %d", 4000, 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4000d %d", -1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    ASSERT (result[0] == '-');
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[1 + i] == '0');
+    ASSERT (strcmp (result + 1 + 4000 - 7, "1234567 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4000u %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "1234567 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4000o %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 7; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 7, "4553207 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.4000x %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    for (i = 0; i < 4000 - 6; i++)
+      ASSERT (result[i] == '0');
+    ASSERT (strcmp (result + 4000 - 6, "12d687 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%#.4000x %d", 1234567, 99);
+    size_t i;
+    ASSERT (result != NULL);
+    ASSERT (result[0] == '0');
+    ASSERT (result[1] == 'x');
+    for (i = 0; i < 4000 - 6; i++)
+      ASSERT (result[2 + i] == '0');
+    ASSERT (strcmp (result + 2 + 4000 - 6, "12d687 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
+  {
+    char input[5000];
+    size_t length;
+    char *result;
+    size_t i;
+
+    for (i = 0; i < sizeof (input) - 1; i++)
+      input[i] = 'a' + ((1000000 / (i + 1)) % 26);
+    input[i] = '\0';
+    result = my_asnprintf (NULL, &length, "%.4000s %d", input, 99);
+    ASSERT (result != NULL);
+    ASSERT (memcmp (result, input, 4000) == 0);
+    ASSERT (strcmp (result + 4000, " 99") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
 }
 
 static char *