Imported Debian patch 0.9.6+really0.9.3-0.1debian/0.9.6+really0.9.3-0.1

1 files changed, 35 insertions, 25 deletions

diff --git a/tests/test-signbit.c b/tests/test-signbit.c
index 80e9a08..9581190 100644
--- a/tests/test-signbit.c
+++ b/tests/test-signbit.c
@@ -1,5 +1,5 @@
 /* Test of signbit() substitute.
-   Copyright (C) 2007-2015 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2008, 2009, 2010 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
@@ -28,14 +28,34 @@
 #include <float.h>
 #include <limits.h>
 
-#include "minus-zero.h"
-#include "infinity.h"
 #include "macros.h"
 
 float zerof = 0.0f;
 double zerod = 0.0;
 long double zerol = 0.0L;
 
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
+   So we use -zerof instead.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+   So we use -zerod instead.  */
+
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+   So we use minus_zerol instead.
+   IRIX cc can't put -0.0L into .data, but can compute at runtime.
+   Note that the expression -LDBL_MIN * LDBL_MIN does not work on other
+   platforms, such as when cross-compiling to PowerPC on MacOS X 10.5.  */
+#if defined __hpux || defined __sgi
+static long double
+compute_minus_zerol (void)
+{
+  return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
+#else
+long double minus_zerol = -0.0L;
+#endif
+
 static void
 test_signbitf ()
 {
@@ -48,13 +68,13 @@ test_signbitf ()
   ASSERT (signbit (-2.718e-30f));
   /* Zeros.  */
   ASSERT (!signbit (0.0f));
-  if (1.0f / minus_zerof < 0)
-    ASSERT (signbit (minus_zerof));
+  if (1.0f / -zerof < 0)
+    ASSERT (signbit (-zerof));
   else
-    ASSERT (!signbit (minus_zerof));
+    ASSERT (!signbit (-zerof));
   /* Infinite values.  */
-  ASSERT (!signbit (Infinityf ()));
-  ASSERT (signbit (- Infinityf ()));
+  ASSERT (!signbit (1.0f / 0.0f));
+  ASSERT (signbit (-1.0f / 0.0f));
   /* Quiet NaN.  */
   (void) signbit (zerof / zerof);
 #if defined FLT_EXPBIT0_WORD && defined FLT_EXPBIT0_BIT
@@ -93,13 +113,13 @@ test_signbitd ()
   ASSERT (signbit (-2.718e-30));
   /* Zeros.  */
   ASSERT (!signbit (0.0));
-  if (1.0 / minus_zerod < 0)
-    ASSERT (signbit (minus_zerod));
+  if (1.0 / -zerod < 0)
+    ASSERT (signbit (-zerod));
   else
-    ASSERT (!signbit (minus_zerod));
+    ASSERT (!signbit (-zerod));
   /* Infinite values.  */
-  ASSERT (!signbit (Infinityd ()));
-  ASSERT (signbit (- Infinityd ()));
+  ASSERT (!signbit (1.0 / 0.0));
+  ASSERT (signbit (-1.0 / 0.0));
   /* Quiet NaN.  */
   (void) signbit (zerod / zerod);
 #if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
@@ -141,8 +161,8 @@ test_signbitl ()
   else
     ASSERT (!signbit (minus_zerol));
   /* Infinite values.  */
-  ASSERT (!signbit (Infinityl ()));
-  ASSERT (signbit (- Infinityl ()));
+  ASSERT (!signbit (1.0L / 0.0L));
+  ASSERT (signbit (-1.0L / 0.0L));
   /* Quiet NaN.  */
   (void) signbit (zerol / zerol);
 #if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
@@ -151,16 +171,6 @@ test_signbitl ()
     #define NWORDS \
       ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
     typedef union { long double value; unsigned int word[NWORDS]; } memory_long_double;
-
-#if defined __powerpc__ && LDBL_MANT_DIG == 106
-    /* This is PowerPC "double double", a pair of two doubles.  Inf and Nan are
-       represented as the corresponding 64-bit IEEE values in the first double;
-       the second is ignored.  Manipulate only the first double.  */
-    #undef NWORDS
-    #define NWORDS \
-      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
-#endif
-
     memory_long_double m;
     m.value = zerol / zerol;
 # if LDBL_EXPBIT0_BIT > 0