Guarantee a definition of NAN.

[gnulib.git] / tests / test-vasnprintf-posix.c

diff --git a/tests/test-vasnprintf-posix.c b/tests/test-vasnprintf-posix.c
index e947cc7..c29546a 100644 (file)
--- a/tests/test-vasnprintf-posix.c
+++ b/tests/test-vasnprintf-posix.c
@@ -21,6 +21,7 @@
 #include "vasnprintf.h"
 
 #include <float.h>
+#include <math.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -40,18 +41,6 @@
     }                                                                       \
   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 ()
@@ -105,7 +94,7 @@ 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 *, ...))
 {
@@ -257,7 +246,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
            && strisnan (result, 0, strlen (result) - 3, 0)
@@ -490,7 +479,7 @@ 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", NAN, 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> */
@@ -1086,7 +1075,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
            && strisnan (result, 0, strlen (result) - 3, 0)
@@ -1179,7 +1168,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -1658,7 +1647,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
            && strisnan (result, 0, strlen (result) - 3, 1)
@@ -1997,7 +1986,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
            && strisnan (result, 0, strlen (result) - 3, 0)
@@ -2108,7 +2097,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)
@@ -2699,7 +2688,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) >= 3 + 3
            && strisnan (result, 0, strlen (result) - 3, 0)
@@ -2803,7 +2792,7 @@ 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", NAN, 33, 44, 55);
     ASSERT (result != NULL);
     ASSERT (strlen (result) == 50 + 3
            && strisnan (result, strspn (result, " "), strlen (result) - 3, 0)