have bootstrap initialize git-merge-changelog if found

[gnulib.git] / tests / test-strtod.c

diff --git a/tests/test-strtod.c b/tests/test-strtod.c
index 6c63e13..d99e5fe 100644 (file)
--- a/tests/test-strtod.c
+++ b/tests/test-strtod.c
@@ -25,7 +25,7 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "isnand.h"
+#include "isnand-nolibm.h"
 
 #define ASSERT(expr) \
   do                                                                        \
@@ -39,6 +39,13 @@
     }                                                                       \
   while (0)
 
+/* Avoid requiring -lm just for fabs.  */
+#define FABS(d) ((d) < 0.0 ? -(d) : (d))
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+   So we use -zero instead.  */
+double zero = 0.0;
+
 int
 main ()
 {
@@ -163,7 +170,7 @@ main ()
     /* FIXME - gnulib's version is rather inaccurate.  It would be
        nice to guarantee an exact result, but for now, we settle for a
        1-ulp error.  */
-    ASSERT (abs (result - 0.5) < DBL_EPSILON);
+    ASSERT (FABS (result - 0.5) < DBL_EPSILON);
     ASSERT (ptr == input + 2);
     ASSERT (errno == 0);
   }
@@ -246,7 +253,7 @@ main ()
     /* FIXME - gnulib's version is rather inaccurate.  It would be
        nice to guarantee an exact result, but for now, we settle for a
        1-ulp error.  */
-    ASSERT (abs (result - 0.5) < DBL_EPSILON);
+    ASSERT (FABS (result - 0.5) < DBL_EPSILON);
     ASSERT (ptr == input + 4);
     ASSERT (errno == 0);
   }
@@ -314,7 +321,7 @@ main ()
     errno = 0;
     result = strtod (input, &ptr);
     ASSERT (result == 0.0);
-    ASSERT (!!signbit (result) == !!signbit (-0.0)); /* IRIX 6.5, OSF/1 4.0 */
+    ASSERT (!!signbit (result) == !!signbit (-zero)); /* IRIX 6.5, OSF/1 4.0 */
     ASSERT (ptr == input + 2);
     ASSERT (errno == 0);
   }
@@ -409,7 +416,7 @@ main ()
     errno = 0;
     result = strtod (input, &ptr);
     ASSERT (result == 0.0);
-    ASSERT (!!signbit (result) == !!signbit (-0.0)); /* MacOS X 10.3, FreeBSD 6.2, IRIX 6.5, OSF/1 4.0 */
+    ASSERT (!!signbit (result) == !!signbit (-zero)); /* MacOS X 10.3, FreeBSD 6.2, IRIX 6.5, OSF/1 4.0 */
     ASSERT (ptr == input + 2);          /* glibc-2.3.6, MacOS X 10.3, FreeBSD 6.2 */
     ASSERT (errno == 0);
   }
@@ -534,7 +541,7 @@ main ()
        0 on negative underflow, even though quality of implementation
        demands preserving the sign.  Disable this test until fixed
        glibc is more prevalent.  */
-    ASSERT (!!signbit (result) == !!signbit (-0.0)); /* glibc-2.3.6, mingw */
+    ASSERT (!!signbit (result) == !!signbit (-zero)); /* glibc-2.3.6, mingw */
 #endif
     ASSERT (ptr == input + 10);
     ASSERT (errno == ERANGE);
@@ -903,7 +910,7 @@ main ()
        errno = 0;
        result = strtod (input, &ptr);
        ASSERT (result == 0.0);
-       ASSERT (!!signbit (result) == !!signbit (-0.0)); /* IRIX 6.5, OSF/1 4.0 */
+       ASSERT (!!signbit (result) == !!signbit (-zero)); /* IRIX 6.5, OSF/1 4.0 */
        ASSERT (ptr == input + m);
        ASSERT (errno == 0);
       }