From a9a31b1de5776a3b08a82101a4fa711294f0dd1d Mon Sep 17 00:00:00 2001
From: "Manuel A. Fernandez Montecelo" <manuel.montezelo@gmail.com>
Date: Fri, 27 May 2016 14:28:30 +0100
Subject: Imported Upstream version 0.9.6+really0.9.3

---
 tests/test-isnanl.h | 57 ++++++++++++++++++++++++++++++++---------------------
 1 file changed, 34 insertions(+), 23 deletions(-)

(limited to 'tests/test-isnanl.h')

diff --git a/tests/test-isnanl.h b/tests/test-isnanl.h
index 2e65afae..1665cf41 100644
--- a/tests/test-isnanl.h
+++ b/tests/test-isnanl.h
@@ -1,5 +1,5 @@
 /* Test of isnanl() substitute.
-   Copyright (C) 2007-2015 Free Software Foundation, Inc.
+   Copyright (C) 2007-2010 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
@@ -19,11 +19,25 @@
 #include <float.h>
 #include <limits.h>
 
-#include "minus-zero.h"
-#include "infinity.h"
 #include "nan.h"
 #include "macros.h"
 
+/* On HP-UX 10.20, negating 0.0L does not yield -0.0L.
+   So we use minus_zero 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_zero (void)
+{
+  return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zero compute_minus_zero ()
+#else
+long double minus_zero = -0.0L;
+#endif
+
 int
 main ()
 {
@@ -40,10 +54,10 @@ main ()
   ASSERT (!isnanl (-2.718e30L));
   ASSERT (!isnanl (-2.718e-30L));
   ASSERT (!isnanl (0.0L));
-  ASSERT (!isnanl (minus_zerol));
+  ASSERT (!isnanl (minus_zero));
   /* Infinite values.  */
-  ASSERT (!isnanl (Infinityl ()));
-  ASSERT (!isnanl (- Infinityl ()));
+  ASSERT (!isnanl (1.0L / 0.0L));
+  ASSERT (!isnanl (-1.0L / 0.0L));
   /* Quiet NaN.  */
   ASSERT (isnanl (NaNl ()));
 
@@ -51,15 +65,6 @@ main ()
   /* A bit pattern that is different from a Quiet NaN.  With a bit of luck,
      it's a Signalling NaN.  */
   {
-#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 = NaNl ();
 # if LDBL_EXPBIT0_BIT > 0
@@ -74,13 +79,13 @@ main ()
   }
 #endif
 
-#if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_)) && !HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
+#if ((defined __ia64 && LDBL_MANT_DIG == 64) || (defined __x86_64__ || defined __amd64__) || (defined __i386 || defined __i386__ || defined _I386 || defined _M_IX86 || defined _X86_))
 /* Representation of an 80-bit 'long double' as an initializer for a sequence
    of 'unsigned int' words.  */
 # ifdef WORDS_BIGENDIAN
 #  define LDBL80_WORDS(exponent,manthi,mantlo) \
      { ((unsigned int) (exponent) << 16) | ((unsigned int) (manthi) >> 16), \
-       ((unsigned int) (manthi) << 16) | ((unsigned int) (mantlo) >> 16),   \
+       ((unsigned int) (manthi) << 16) | (unsigned int) (mantlo) >> 16),    \
        (unsigned int) (mantlo) << 16                                        \
      }
 # else
@@ -98,31 +103,37 @@ main ()
       { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
     ASSERT (isnanl (x.value));
   }
-  /* isnanl should return something for noncanonical values.  */
+  /* The isnanl function should recognize Pseudo-NaNs, Pseudo-Infinities,
+     Pseudo-Zeroes, Unnormalized Numbers, and Pseudo-Denormals, as defined in
+       Intel IA-64 Architecture Software Developer's Manual, Volume 1:
+       Application Architecture.
+       Table 5-2 "Floating-Point Register Encodings"
+       Figure 5-6 "Memory to Floating-Point Register Data Translation"
+   */
   { /* Pseudo-NaN.  */
     static memory_long_double x =
       { LDBL80_WORDS (0xFFFF, 0x40000001, 0x00000000) };
-    ASSERT (isnanl (x.value) || !isnanl (x.value));
+    ASSERT (isnanl (x.value));
   }
   { /* Pseudo-Infinity.  */
     static memory_long_double x =
       { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
-    ASSERT (isnanl (x.value) || !isnanl (x.value));
+    ASSERT (isnanl (x.value));
   }
   { /* Pseudo-Zero.  */
     static memory_long_double x =
       { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
-    ASSERT (isnanl (x.value) || !isnanl (x.value));
+    ASSERT (isnanl (x.value));
   }
   { /* Unnormalized number.  */
     static memory_long_double x =
       { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
-    ASSERT (isnanl (x.value) || !isnanl (x.value));
+    ASSERT (isnanl (x.value));
   }
   { /* Pseudo-Denormal.  */
     static memory_long_double x =
       { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
-    ASSERT (isnanl (x.value) || !isnanl (x.value));
+    ASSERT (isnanl (x.value));
   }
 #endif
 
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