X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=tests%2Ftest-isnanl.h;h=baf04db0db8c55fbd1c6cccf051780a400159dca;hb=4097b52187106b6a2940d28968cfecd4e53f9b4e;hp=0dab89908ab8a0ffedf1e26967b2764f22702d74;hpb=8259385347f8d28f43f7e0d43debb4fdb60c7a1f;p=gnulib.git
diff --git a/tests/test-isnanl.h b/tests/test-isnanl.h
index 0dab89908..baf04db0d 100644
--- a/tests/test-isnanl.h
+++ b/tests/test-isnanl.h
@@ -1,10 +1,10 @@
/* Test of isnanl() substitute.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007-2009 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or modify
+ 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
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,19 +12,53 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program. If not, see . */
/* Written by Bruno Haible , 2007. */
+#include
#include
+#include
#include
-#define ASSERT(expr) if (!(expr)) abort ();
+#include "nan.h"
+
+#define ASSERT(expr) \
+ do \
+ { \
+ if (!(expr)) \
+ { \
+ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+ fflush (stderr); \
+ abort (); \
+ } \
+ } \
+ while (0)
+
+/* 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 ()
{
+ #define NWORDS \
+ ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
+ typedef union { unsigned int word[NWORDS]; long double value; }
+ memory_long_double;
+
/* Finite values. */
ASSERT (!isnanl (3.141L));
ASSERT (!isnanl (3.141e30L));
@@ -32,20 +66,20 @@ main ()
ASSERT (!isnanl (-2.718L));
ASSERT (!isnanl (-2.718e30L));
ASSERT (!isnanl (-2.718e-30L));
+ ASSERT (!isnanl (0.0L));
+ ASSERT (!isnanl (minus_zero));
/* Infinite values. */
ASSERT (!isnanl (1.0L / 0.0L));
ASSERT (!isnanl (-1.0L / 0.0L));
/* Quiet NaN. */
- ASSERT (isnanl (0.0L / 0.0L));
+ ASSERT (isnanl (NaNl ()));
+
#if defined LDBL_EXPBIT0_WORD && defined LDBL_EXPBIT0_BIT
- /* Signalling NaN. */
+ /* A bit pattern that is different from a Quiet NaN. With a bit of luck,
+ it's a Signalling NaN. */
{
- #define NWORDS \
- ((sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
- typedef union { long double value; unsigned int word[NWORDS]; }
- memory_long_double;
memory_long_double m;
- m.value = 0.0L / 0.0L;
+ m.value = NaNl ();
# if LDBL_EXPBIT0_BIT > 0
m.word[LDBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (LDBL_EXPBIT0_BIT - 1);
# else
@@ -57,5 +91,64 @@ main ()
ASSERT (isnanl (m.value));
}
#endif
+
+#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) (mantlo) << 16 \
+ }
+# else
+# define LDBL80_WORDS(exponent,manthi,mantlo) \
+ { mantlo, manthi, exponent }
+# endif
+ { /* Quiet NaN. */
+ static memory_long_double x =
+ { LDBL80_WORDS (0xFFFF, 0xC3333333, 0x00000000) };
+ ASSERT (isnanl (x.value));
+ }
+ {
+ /* Signalling NaN. */
+ static memory_long_double x =
+ { LDBL80_WORDS (0xFFFF, 0x83333333, 0x00000000) };
+ ASSERT (isnanl (x.value));
+ }
+ /* 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));
+ }
+ { /* Pseudo-Infinity. */
+ static memory_long_double x =
+ { LDBL80_WORDS (0xFFFF, 0x00000000, 0x00000000) };
+ ASSERT (isnanl (x.value));
+ }
+ { /* Pseudo-Zero. */
+ static memory_long_double x =
+ { LDBL80_WORDS (0x4004, 0x00000000, 0x00000000) };
+ ASSERT (isnanl (x.value));
+ }
+ { /* Unnormalized number. */
+ static memory_long_double x =
+ { LDBL80_WORDS (0x4000, 0x63333333, 0x00000000) };
+ ASSERT (isnanl (x.value));
+ }
+ { /* Pseudo-Denormal. */
+ static memory_long_double x =
+ { LDBL80_WORDS (0x0000, 0x83333333, 0x00000000) };
+ ASSERT (isnanl (x.value));
+ }
+#endif
+
return 0;
}