X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-logb.c;h=d65d2895bbda416add9e29d14c5129a50b83b154;hb=bbfcd2f1a92c9bdbb8d7d7d0a8a8c6665c316747;hp=8b7a612d8cf4095f02b22f9bf5ef502e8233a13e;hpb=de58fd98f4ede3c8da870f8df3934735ee1a3531;p=gnulib.git

diff --git a/tests/test-logb.c b/tests/test-logb.c
index 8b7a612d8..d65d2895b 100644
--- a/tests/test-logb.c
+++ b/tests/test-logb.c
@@ -1,5 +1,5 @@
 /* Test of logb() function.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2013 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
@@ -25,38 +25,30 @@ SIGNATURE_CHECK (logb, double, (double));
 
 #include <float.h>
 
+#include "minus-zero.h"
 #include "macros.h"
 
-volatile double x;
-double y;
+#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 HUGEVAL HUGE_VAL
+#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 LOGB logb
+#define RANDOM randomd
+#include "test-logb.h"
 
 int
 main ()
 {
-  /* Some particular values.  */
-  x = 0.6;
-  y = logb (x);
-  ASSERT (y == -1.0);
-
-  x = 1.2;
-  y = logb (x);
-  ASSERT (y == 0.0);
-
-  x = 2.1;
-  y = logb (x);
-  ASSERT (y == 1.0);
-
-  x = 3.9;
-  y = logb (x);
-  ASSERT (y == 1.0);
-
-  x = 4.0;
-  y = logb (x);
-  ASSERT (y == (FLT_RADIX == 2 ? 2.0 : 1.0));
-
-  x = 0.25;
-  y = logb (x);
-  ASSERT (y == (FLT_RADIX == 2 ? -2.0 : -1.0));
+  test_function ();
 
   return 0;
 }