/* Test of multiplying a 'long double' by a power of 2.
- Copyright (C) 2007-2009 Free Software Foundation, Inc.
+ Copyright (C) 2007-2011 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
#include "fpucw.h"
#include "isnanl-nolibm.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
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE long double
+#define ISNAN isnanl
+#define INFINITY Infinityl ()
+#define NAN NaNl ()
+#define L_(literal) literal##L
+#define MINUS_ZERO minus_zerol
+#define LDEXP ldexpl
+#define MIN_EXP LDBL_MIN_EXP
+#define MAX_EXP LDBL_MAX_EXP
+#include "test-ldexp.h"
int
main ()
{
- int i;
- long double x;
- long double y;
DECL_LONG_DOUBLE_ROUNDING
BEGIN_LONG_DOUBLE_ROUNDING ();
- { /* NaN. */
- x = NaNl ();
- y = ldexpl (x, 0); ASSERT (isnanl (y));
- y = ldexpl (x, 5); ASSERT (isnanl (y));
- y = ldexpl (x, -5); ASSERT (isnanl (y));
- }
-
- { /* Positive infinity. */
- x = 1.0L / 0.0L;
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x);
- y = ldexpl (x, -5); ASSERT (y == x);
- }
-
- { /* Negative infinity. */
- x = -1.0L / 0.0L;
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x);
- y = ldexpl (x, -5); ASSERT (y == x);
- }
-
- { /* Positive zero. */
- x = 0.0L;
- y = ldexpl (x, 0); ASSERT (y == x); ASSERT (!signbit (x));
- y = ldexpl (x, 5); ASSERT (y == x); ASSERT (!signbit (x));
- y = ldexpl (x, -5); ASSERT (y == x); ASSERT (!signbit (x));
- }
-
- { /* Negative zero. */
- x = minus_zero;
- y = ldexpl (x, 0); ASSERT (y == x); ASSERT (signbit (x));
- y = ldexpl (x, 5); ASSERT (y == x); ASSERT (signbit (x));
- y = ldexpl (x, -5); ASSERT (y == x); ASSERT (signbit (x));
- }
-
- { /* Positive finite number. */
- x = 1.73205L;
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x * 32.0L);
- y = ldexpl (x, -5); ASSERT (y == x * 0.03125L);
- }
-
- { /* Negative finite number. */
- x = -20.085536923187667742L;
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x * 32.0L);
- y = ldexpl (x, -5); ASSERT (y == x * 0.03125L);
- }
-
- for (i = 1, x = 1.73205L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
- {
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x * 32.0L);
- y = ldexpl (x, -5); ASSERT (y == x * 0.03125L);
- }
- for (i = 1, x = 1.73205L; i >= LDBL_MIN_EXP; i--, x *= 0.5L)
- {
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x * 32.0L);
- if (i - 5 >= LDBL_MIN_EXP)
- {
- y = ldexpl (x, -5); ASSERT (y == x * 0.03125L);
- }
- }
- for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
- {
- y = ldexpl (x, 0); ASSERT (y == x);
- y = ldexpl (x, 5); ASSERT (y == x * 32.0L);
- }
+ test_function ();
return 0;
}