Comment.

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

diff --git a/tests/test-floorl.c b/tests/test-floorl.c
index 8f10f4e..f090c9c 100644 (file)
--- a/tests/test-floorl.c
+++ b/tests/test-floorl.c
@@ -20,6 +20,7 @@
 
 #include <math.h>
 
+#include <float.h>
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -38,6 +39,10 @@
     }                                                                       \
   while (0)
 
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+   So we use minus_zero instead.  */
+long double minus_zero = -LDBL_MIN * LDBL_MIN;
+
 int
 main ()
 {
@@ -47,7 +52,7 @@ main ()
 
   /* Zero.  */
   ASSERT (floorl (0.0L) == 0.0L);
-  ASSERT (floorl (-0.0L) == 0.0L);
+  ASSERT (floorl (minus_zero) == 0.0L);
   /* Positive numbers.  */
   ASSERT (floorl (0.3L) == 0.0L);
   ASSERT (floorl (0.7L) == 0.0L);