X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-frexp.c;h=f7a10f5bc1f5f24cbd2bc2a40c527b21617e8005;hb=1276a2c5f24c0c932426aca9c899fa524d2443f2;hp=9ce989b06db40540d786b5636ca73c4477abe3e7;hpb=75d146361fe980e1e1bbb9639edc6fbed5345e82;p=gnulib.git

diff --git a/tests/test-frexp.c b/tests/test-frexp.c
index 9ce989b06..f7a10f5bc 100644
--- a/tests/test-frexp.c
+++ b/tests/test-frexp.c
@@ -1,10 +1,10 @@
 /* Test of splitting a double into fraction and mantissa.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007-2014 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.  */
 
@@ -21,191 +20,48 @@
 
 #include <math.h>
 
-#include <float.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "isnan.h"
-
-#define ASSERT(expr) \
-  do									     \
-    {									     \
-      if (!(expr))							     \
-        {								     \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          abort ();							     \
-        }								     \
-    }									     \
-  while (0)
+#include "signature.h"
+SIGNATURE_CHECK (frexp, double, (double, int *));
 
-/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0.  */
-#ifdef __DECC
-static double
-NaN ()
-{
-  static double zero = 0.0;
-  return zero / zero;
-}
-#else
-# define NaN() (0.0 / 0.0)
-#endif
+#include <float.h>
 
-static double
-my_ldexp (double x, int d)
-{
-  for (; d > 0; d--)
-    x *= 2.0;
-  for (; d < 0; d++)
-    x *= 0.5;
-  return x;
-}
+#include "isnand-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 double
+/* The use of 'volatile' guarantees that excess precision bits are dropped
+   when dealing with denormalized numbers.  It is necessary on x86 systems
+   where double-floats are not IEEE compliant by default, to avoid that the
+   results become platform and compiler option dependent.  'volatile' is a
+   portable alternative to gcc's -ffloat-store option.  */
+#define VOLATILE volatile
+#define ISNAN isnand
+#define INFINITY Infinityd ()
+#define NAN NaNd ()
+#define L_(literal) literal
+#define MINUS_ZERO minus_zerod
+#define MAX_EXP DBL_MAX_EXP
+#define MIN_EXP DBL_MIN_EXP
+#define MIN_NORMAL_EXP DBL_MIN_EXP
+#define FREXP frexp
+#define RANDOM randomd
+#include "test-frexp.h"
 
 int
 main ()
 {
-  int i;
-  /* The use of 'volatile' guarantees that excess precision bits are dropped
-     when dealing with denormalized numbers.  It is necessary on x86 systems
-     where double-floats are not IEEE compliant by default, to avoid that the
-     results become platform and compiler option dependent.  'volatile' is a
-     portable alternative to gcc's -ffloat-store option.  */
-  volatile double x;
-
-  { /* NaN.  */
-    int exp = -9999;
-    double mantissa;
-    x = NaN ();
-    mantissa = frexp (x, &exp);
-    ASSERT (isnan (mantissa));
-  }
-
-  { /* Positive infinity.  */
-    int exp = -9999;
-    double mantissa;
-    x = 1.0 / 0.0;
-    mantissa = frexp (x, &exp);
-    ASSERT (mantissa == x);
-  }
-
-  { /* Negative infinity.  */
-    int exp = -9999;
-    double mantissa;
-    x = -1.0 / 0.0;
-    mantissa = frexp (x, &exp);
-    ASSERT (mantissa == x);
-  }
-
-  { /* Positive zero.  */
-    int exp = -9999;
-    double mantissa;
-    x = 0.0;
-    mantissa = frexp (x, &exp);
-    ASSERT (exp == 0);
-    ASSERT (mantissa == x);
-    ASSERT (!signbit (mantissa));
-  }
-
-  { /* Negative zero.  */
-    int exp = -9999;
-    double mantissa;
-    x = -0.0;
-    mantissa = frexp (x, &exp);
-    ASSERT (exp == 0);
-    ASSERT (mantissa == x);
-    ASSERT (signbit (mantissa));
-  }
-
-  for (i = 1, x = 1.0; i <= DBL_MAX_EXP; i++, x *= 2.0)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.5);
-    }
-  for (i = 1, x = 1.0; i >= DBL_MIN_EXP; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.5);
-    }
-  for (; i >= DBL_MIN_EXP - 100 && x > 0.0; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.5);
-    }
-
-  for (i = 1, x = -1.0; i <= DBL_MAX_EXP; i++, x *= 2.0)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == -0.5);
-    }
-  for (i = 1, x = -1.0; i >= DBL_MIN_EXP; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == -0.5);
-    }
-  for (; i >= DBL_MIN_EXP - 100 && x < 0.0; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == -0.5);
-    }
-
-  for (i = 1, x = 1.01; i <= DBL_MAX_EXP; i++, x *= 2.0)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.505);
-    }
-  for (i = 1, x = 1.01; i >= DBL_MIN_EXP; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.505);
-    }
-  for (; i >= DBL_MIN_EXP - 100 && x > 0.0; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa >= 0.5);
-      ASSERT (mantissa < 1.0);
-      ASSERT (mantissa == my_ldexp (x, - exp));
-    }
-
-  for (i = 1, x = 1.73205; i <= DBL_MAX_EXP; i++, x *= 2.0)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.866025);
-    }
-  for (i = 1, x = 1.73205; i >= DBL_MIN_EXP; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i);
-      ASSERT (mantissa == 0.866025);
-    }
-  for (; i >= DBL_MIN_EXP - 100 && x > 0.0; i--, x *= 0.5)
-    {
-      int exp = -9999;
-      double mantissa = frexp (x, &exp);
-      ASSERT (exp == i || exp == i + 1);
-      ASSERT (mantissa >= 0.5);
-      ASSERT (mantissa < 1.0);
-      ASSERT (mantissa == my_ldexp (x, - exp));
-    }
+  test_function ();
 
   return 0;
 }