X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-frexpl.c;h=5a5eae52c44cf94de1b32de38f62321d6ec2be69;hb=fba20d159fe191b9d67688738b7c31e769171aac;hp=f98fcf109db3d1fd12d98aa9a569dd0cd7e8139c;hpb=80689324582ff25f245c1ff52a401a59072c1928;p=gnulib.git

diff --git a/tests/test-frexpl.c b/tests/test-frexpl.c
index f98fcf109..5a5eae52c 100644
--- a/tests/test-frexpl.c
+++ b/tests/test-frexpl.c
@@ -1,10 +1,10 @@
 /* Test of splitting a 'long double' into fraction and mantissa.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 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
@@ -12,8 +12,7 @@
    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 <http://www.gnu.org/licenses/>.  */
 
 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
 
@@ -21,160 +20,59 @@
 
 #include <math.h>
 
-#include <float.h>
-#include <stdlib.h>
+#include "signature.h"
+SIGNATURE_CHECK (frexpl, long double, (long double, int *));
 
-#define ASSERT(expr) if (!(expr)) abort ();
+#include <float.h>
 
-static long double
-my_ldexp (long double x, int d)
-{
-  for (; d > 0; d--)
-    x *= 2.0L;
-  for (; d < 0; d++)
-    x *= 0.5L;
-  return x;
-}
+#include "fpucw.h"
+#include "isnanl-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+/* Avoid some warnings from "gcc -Wshadow".
+   This file doesn't use the exp() function.  */
+#undef exp
+#define exp exponent
+
+#undef INFINITY
+#undef NAN
+
+#define DOUBLE long double
+#define VOLATILE
+#define ISNAN isnanl
+#define INFINITY Infinityl ()
+#define NAN NaNl ()
+#define L_(literal) literal##L
+#define MINUS_ZERO minus_zerol
+#define MAX_EXP LDBL_MAX_EXP
+#define MIN_EXP LDBL_MIN_EXP
+/* On MIPS IRIX machines, LDBL_MIN_EXP is -1021, but the smallest reliable
+   exponent for 'long double' is -964.  Similarly, on PowerPC machines,
+   LDBL_MIN_EXP is -1021, but the smallest reliable exponent for 'long double'
+   is -968.  For exponents below that, the precision may be truncated to the
+   precision used for 'double'.  */
+#ifdef __sgi
+# define MIN_NORMAL_EXP (LDBL_MIN_EXP + 57)
+#elif defined __ppc || defined __ppc__ || defined __powerpc || defined __powerpc__
+# define MIN_NORMAL_EXP (LDBL_MIN_EXP + 53)
+#else
+# define MIN_NORMAL_EXP LDBL_MIN_EXP
+#endif
+#define FREXP frexpl
+#define RANDOM randoml
+#include "test-frexp.h"
 
 int
 main ()
 {
-  int i;
-  long double x;
-
-  { /* NaN.  */
-    int exp = -9999;
-    long double mantissa;
-    x = 0.0L / 0.0L;
-    mantissa = frexpl (x, &exp);
-    ASSERT (mantissa != mantissa);
-  }
-
-  { /* Positive infinity.  */
-    int exp = -9999;
-    long double mantissa;
-    x = 1.0L / 0.0L;
-    mantissa = frexpl (x, &exp);
-    ASSERT (mantissa == x);
-  }
-
-  { /* Negative infinity.  */
-    int exp = -9999;
-    long double mantissa;
-    x = -1.0L / 0.0L;
-    mantissa = frexpl (x, &exp);
-    ASSERT (mantissa == x);
-  }
-
-  { /* Positive zero.  */
-    int exp = -9999;
-    long double mantissa;
-    x = 0.0L;
-    mantissa = frexpl (x, &exp);
-    ASSERT (exp == 0);
-    ASSERT (mantissa == x);
-  }
-
-  { /* Negative zero.  */
-    int exp = -9999;
-    long double mantissa;
-    x = -0.0L;
-    mantissa = frexpl (x, &exp);
-    ASSERT (exp == 0);
-    ASSERT (mantissa == x);
-  }
-
-  for (i = 1, x = 1.0L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.5L);
-    }
-  for (i = 1, x = 1.0L; i >= LDBL_MIN_EXP; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.5L);
-    }
-  for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.5L);
-    }
-
-  for (i = 1, x = -1.0L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == -0.5L);
-    }
-  for (i = 1, x = -1.0L; i >= LDBL_MIN_EXP; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == -0.5L);
-    }
-  for (; i >= LDBL_MIN_EXP - 100 && x < 0.0L; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == -0.5L);
-    }
-
-  for (i = 1, x = 1.01L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.505L);
-    }
-  for (i = 1, x = 1.01L; i >= LDBL_MIN_EXP; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.505L);
-    }
-  for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa >= 0.5L);
-      ASSERT (mantissa < 1.0L);
-      ASSERT (mantissa == my_ldexp (x, - exp));
-    }
-
-  for (i = 1, x = 1.73205L; i <= LDBL_MAX_EXP; i++, x *= 2.0L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.866025L);
-    }
-  for (i = 1, x = 1.73205L; i >= LDBL_MIN_EXP; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.866025L);
-    }
-  for (; i >= LDBL_MIN_EXP - 100 && x > 0.0L; i--, x *= 0.5L)
-    {
-      int exp = -9999;
-      long double mantissa = frexpl (x, &exp);
-      ASSERT (exp == i || exp == i + 1);
-      ASSERT (mantissa >= 0.5L);
-      ASSERT (mantissa < 1.0L);
-      ASSERT (mantissa == my_ldexp (x, - exp));
-    }
+  DECL_LONG_DOUBLE_ROUNDING
+
+  BEGIN_LONG_DOUBLE_ROUNDING ();
+
+  test_function ();
 
   return 0;
 }