Avoid test failures on platforms where -0.0 and 0.0 are identical.

diff --git a/ChangeLog b/ChangeLog
index 378ca5f81a06126cc2070ab34efc0b1ef4f60b2e..77b3af7e5d216789ef117bca25fd3feb7a3afe11 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,23 @@
+2007-05-19  Bruno Haible  <bruno@clisp.org>
+
+       * tests/test-vasnprintf-posix.c (have_minus_zero): New function.
+       (test_function): Skip tests involving -0.0 on platforms where
+       -0.0 = 0.0.
+       * tests/test-vasprintf-posix.c (have_minus_zero): New function.
+       (test_function): Skip tests involving -0.0 on platforms where
+       -0.0 = 0.0.
+       * tests/test-snprintf-posix.h (have_minus_zero): New function.
+       (test_function): Skip tests involving -0.0 on platforms where
+       -0.0 = 0.0.
+       * tests/test-sprintf-posix.h (have_minus_zero): New function.
+       (test_function): Skip tests involving -0.0 on platforms where
+       -0.0 = 0.0.
+       * tests/test-fprintf-posix.h (test_function): Remove all -0.0 related
+       tests.
+       * tests/test-printf-posix.h (test_function): Likewise.
+       * tests/test-printf-posix.output: Remove all -0.0 related results.
+       Needed for IRIX 6.5.
+
 2007-05-19  Bruno Haible  <bruno@clisp.org>
 
        * tests/test-vasnprintf-posix.c (test_function): Allow NaN to be
@@ -5,6 +25,11 @@
        * tests/test-vasprintf-posix.c (test_function): Likewise.
        * tests/test-snprintf-posix.h (test_function): Likewise.
        * tests/test-sprintf-posix.h (test_function): Likewise.
+       * tests/test-fprintf-posix.h (NaN): Remove macro.
+       (test_function): Remove all NaN related tests.
+       * tests/test-printf-posix.h (NaN): Remove macro.
+       (test_function): Remove all NaN related tests.
+       * tests/test-printf-posix.output: Remove all NaN related results.
        Needed for IRIX 6.5.
 
 2007-05-19  Bruno Haible  <bruno@clisp.org>

diff --git a/tests/test-fprintf-posix.h b/tests/test-fprintf-posix.h
index 8671da42a4cfe54c649e1a3ee35401b738b0e153..f25602d76077897f97effdea35662f71ad4320a4 100644 (file)
--- a/tests/test-fprintf-posix.h
+++ b/tests/test-fprintf-posix.h
@@ -37,9 +37,6 @@ test_function (int (*my_fprintf) (FILE *, const char *, ...))
   /* Positive zero.  */
   my_fprintf (stdout, "%a %d\n", 0.0, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_fprintf (stdout, "%a %d\n", -0.0, 33, 44, 55);
-
   /* Positive infinity.  */
   my_fprintf (stdout, "%a %d\n", 1.0 / 0.0, 33, 44, 55);
 
@@ -63,9 +60,6 @@ test_function (int (*my_fprintf) (FILE *, const char *, ...))
   /* Positive zero.  */
   my_fprintf (stdout, "%f %d\n", 0.0, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_fprintf (stdout, "%f %d\n", -0.0, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_fprintf (stdout, "%015f %d\n", 1234.0, 33, 44, 55);
 
@@ -84,9 +78,6 @@ test_function (int (*my_fprintf) (FILE *, const char *, ...))
   /* Positive zero.  */
   my_fprintf (stdout, "%Lf %d\n", 0.0L, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_fprintf (stdout, "%Lf %d\n", -0.0L, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_fprintf (stdout, "%015Lf %d\n", 1234.0L, 33, 44, 55);
 
@@ -107,9 +98,6 @@ test_function (int (*my_fprintf) (FILE *, const char *, ...))
   /* Positive zero.  */
   my_fprintf (stdout, "%F %d\n", 0.0, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_fprintf (stdout, "%F %d\n", -0.0, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_fprintf (stdout, "%015F %d\n", 1234.0, 33, 44, 55);
 
@@ -128,9 +116,6 @@ test_function (int (*my_fprintf) (FILE *, const char *, ...))
   /* Positive zero.  */
   my_fprintf (stdout, "%LF %d\n", 0.0L, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_fprintf (stdout, "%LF %d\n", -0.0L, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_fprintf (stdout, "%015LF %d\n", 1234.0L, 33, 44, 55);
 

diff --git a/tests/test-printf-posix.h b/tests/test-printf-posix.h
index 367dba9abf36c0907124eb30daf2a702ea15425e..2f56487cdf7672ba3d717e3af2b8e3c2c6254e85 100644 (file)
--- a/tests/test-printf-posix.h
+++ b/tests/test-printf-posix.h
@@ -37,9 +37,6 @@ test_function (int (*my_printf) (const char *, ...))
   /* Positive zero.  */
   my_printf ("%a %d\n", 0.0, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_printf ("%a %d\n", -0.0, 33, 44, 55);
-
   /* Positive infinity.  */
   my_printf ("%a %d\n", 1.0 / 0.0, 33, 44, 55);
 
@@ -65,9 +62,6 @@ test_function (int (*my_printf) (const char *, ...))
   /* Positive zero.  */
   my_printf ("%f %d\n", 0.0, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_printf ("%f %d\n", -0.0, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_printf ("%015f %d\n", 1234.0, 33, 44, 55);
 
@@ -86,9 +80,6 @@ test_function (int (*my_printf) (const char *, ...))
   /* Positive zero.  */
   my_printf ("%Lf %d\n", 0.0L, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_printf ("%Lf %d\n", -0.0L, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_printf ("%015Lf %d\n", 1234.0L, 33, 44, 55);
 
@@ -109,9 +100,6 @@ test_function (int (*my_printf) (const char *, ...))
   /* Positive zero.  */
   my_printf ("%F %d\n", 0.0, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_printf ("%F %d\n", -0.0, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_printf ("%015F %d\n", 1234.0, 33, 44, 55);
 
@@ -130,9 +118,6 @@ test_function (int (*my_printf) (const char *, ...))
   /* Positive zero.  */
   my_printf ("%LF %d\n", 0.0L, 33, 44, 55);
 
-  /* Negative zero.  */
-  my_printf ("%LF %d\n", -0.0L, 33, 44, 55);
-
   /* FLAG_ZERO.  */
   my_printf ("%015LF %d\n", 1234.0L, 33, 44, 55);
 

diff --git a/tests/test-printf-posix.output b/tests/test-printf-posix.output
index 937ff1ae1f4bf35904136537e7db0c4f6e30112c..4a6a1706492598352d0db6e22237abf75a34fcfb 100644 (file)
--- a/tests/test-printf-posix.output
+++ b/tests/test-printf-posix.output
@@ -2,7 +2,6 @@
 12345672 33
 12345673 33
 0x0p+0 33
--0x0p+0 33
 inf 33
 -inf 33
        inf 33
@@ -10,28 +9,24 @@ inf 33
 1234567.000000 33
 -0.031250 33
 0.000000 33
--0.000000 33
 00001234.000000 33
 1234 33
 12.750000 33
 1234567.000000 33
 -0.031250 33
 0.000000 33
--0.000000 33
 00001234.000000 33
 1234 33
 12.750000 33
 1234567.000000 33
 -0.031250 33
 0.000000 33
--0.000000 33
 00001234.000000 33
 1234 33
 12.750000 33
 1234567.000000 33
 -0.031250 33
 0.000000 33
--0.000000 33
 00001234.000000 33
 1234 33
 55 33

diff --git a/tests/test-snprintf-posix.h b/tests/test-snprintf-posix.h
index dfd40cb002515f57febe876dabb4071eed099025..f751f5470b8586422dfc0f3c7189ea2f7980bd63 100644 (file)
--- a/tests/test-snprintf-posix.h
+++ b/tests/test-snprintf-posix.h
@@ -29,6 +29,15 @@ NaN ()
 # 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;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
+
 static int
 strmatch (const char *pattern, const char *string)
 {
@@ -141,7 +150,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%a %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -404,7 +414,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%La %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -761,7 +772,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%f %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1007,7 +1019,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%Lf %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1168,7 +1181,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%F %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1261,7 +1275,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%LF %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1459,8 +1474,9 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%e %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0
-           || strcmp (result, "-0.000000e+000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+             || strcmp (result, "-0.000000e+000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1717,7 +1733,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%Le %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1979,7 +1996,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%g %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -2229,7 +2247,8 @@ test_function (int (*my_snprintf) (char *, size_t, const char *, ...))
     char result[100];
     int retval =
       my_snprintf (result, sizeof (result), "%Lg %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 

diff --git a/tests/test-sprintf-posix.h b/tests/test-sprintf-posix.h
index 53065c7c36cb386ddd260c459f69e7325672f31c..3df6d128b08d1be2647634e94f6ce85b134d057f 100644 (file)
--- a/tests/test-sprintf-posix.h
+++ b/tests/test-sprintf-posix.h
@@ -29,6 +29,15 @@ NaN ()
 # 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;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
+
 static int
 strmatch (const char *pattern, const char *string)
 {
@@ -127,7 +136,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%a %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -390,7 +400,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%La %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -747,7 +758,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%f %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -987,7 +999,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%Lf %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1142,7 +1155,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%F %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1235,7 +1249,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%LF %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1433,8 +1448,9 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%e %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0
-           || strcmp (result, "-0.000000e+000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+             || strcmp (result, "-0.000000e+000 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1691,7 +1707,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%Le %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -1953,7 +1970,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%g %d", -0.0, 33, 44, 55);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 
@@ -2203,7 +2221,8 @@ test_function (int (*my_sprintf) (char *, const char *, ...))
     char result[1000];
     int retval =
       my_sprintf (result, "%Lg %d", -0.0L, 33, 44, 55);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (retval == strlen (result));
   }
 

diff --git a/tests/test-vasnprintf-posix.c b/tests/test-vasnprintf-posix.c
index cc042cca9089cdc13ca14cbda43f299248a99308..730c1053688e910fa02aabe3109f74a84d5c24d3 100644 (file)
--- a/tests/test-vasnprintf-posix.c
+++ b/tests/test-vasnprintf-posix.c
@@ -54,6 +54,15 @@ NaN ()
 # 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;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
+
 static int
 strmatch (const char *pattern, const char *string)
 {
@@ -187,7 +196,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%a %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -500,7 +510,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%La %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -911,7 +922,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%f %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -1189,7 +1201,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%Lf %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -1380,7 +1393,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%F %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -1495,7 +1509,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%LF %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -1716,8 +1731,9 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%e %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0
-           || strcmp (result, "-0.000000e+000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+             || strcmp (result, "-0.000000e+000 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2014,7 +2030,8 @@ 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);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2316,7 +2333,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%g %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }
@@ -2606,7 +2624,8 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     char *result =
       my_asnprintf (NULL, &length, "%Lg %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (length == strlen (result));
     free (result);
   }

diff --git a/tests/test-vasprintf-posix.c b/tests/test-vasprintf-posix.c
index c51421e6003d8d1a7a4e7ebac9beebc94050ef96..eb55ab4f972f324ff49a9eb49ed444ebd47b78f8 100644 (file)
--- a/tests/test-vasprintf-posix.c
+++ b/tests/test-vasprintf-posix.c
@@ -54,6 +54,15 @@ NaN ()
 # 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;
+  return memcmp (&plus_zero, &minus_zero, sizeof (double)) != 0;
+}
+
 static int
 strmatch (const char *pattern, const char *string)
 {
@@ -168,7 +177,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%a %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -481,7 +491,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%La %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0x0p+0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0x0p+0 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -892,7 +903,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%f %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -1170,7 +1182,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%Lf %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -1361,7 +1374,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%F %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -1476,7 +1490,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%LF %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -1697,8 +1712,9 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%e %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0
-           || strcmp (result, "-0.000000e+000 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0
+             || strcmp (result, "-0.000000e+000 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -1995,7 +2011,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%Le %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0.000000e+00 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -2297,7 +2314,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%g %d", -0.0, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }
@@ -2587,7 +2605,8 @@ test_function (int (*my_asprintf) (char **, const char *, ...))
     int retval =
       my_asprintf (&result, "%Lg %d", -0.0L, 33, 44, 55);
     ASSERT (result != NULL);
-    ASSERT (strcmp (result, "-0 33") == 0);
+    if (have_minus_zero ())
+      ASSERT (strcmp (result, "-0 33") == 0);
     ASSERT (retval == strlen (result));
     free (result);
   }