Tests for module 'rintf'.

* modules/rintf-tests: New file.
* tests/test-rintf.c: New file.

diff --git a/ChangeLog b/ChangeLog
index ed9e157..062a7bd 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-10-09  Bruno Haible  <bruno@clisp.org>
 
+       Tests for module 'rintf'.
+       * modules/rintf-tests: New file.
+       * tests/test-rintf.c: New file.
+
        New module 'rintf'.
        * lib/math.in.h (rintf): New declaration.
        * lib/rintf.c: New file.

diff --git a/modules/rintf-tests b/modules/rintf-tests
new file mode 100644 (file)
index 0000000..1b5a9c1
--- /dev/null
+++ b/modules/rintf-tests
@@ -0,0 +1,17 @@
+Files:
+tests/test-rintf.c
+tests/minus-zero.h
+tests/infinity.h
+tests/nan.h
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+isnanf-nolibm
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-rintf
+check_PROGRAMS += test-rintf
+test_rintf_LDADD = $(LDADD) @RINTF_LIBM@

diff --git a/tests/test-rintf.c b/tests/test-rintf.c
new file mode 100644 (file)
index 0000000..29d77ef
--- /dev/null
+++ b/tests/test-rintf.c
@@ -0,0 +1,91 @@
+/* Test of rintf() function.
+   Copyright (C) 2010-2011 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
+   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
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (rintf, float, (float));
+
+#include <float.h>
+#include <stdio.h>
+
+#include "isnanf-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+int
+main ()
+{
+  /* Consider the current rounding mode, cf.
+     <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/float.h.html>  */
+  if (FLT_ROUNDS == 1)
+    {
+      /* The current rounding mode is round-to-nearest
+         (the default in IEEE 754).  */
+
+      /* Zero.  */
+      ASSERT (rintf (0.0f) == 0.0f);
+      ASSERT (rintf (minus_zerof) == 0.0f);
+      /* Positive numbers.  */
+      ASSERT (rintf (0.3f) == 0.0f);
+      ASSERT (rintf (0.5f) == 0.0f); /* unlike roundf() */
+      ASSERT (rintf (0.7f) == 1.0f);
+      ASSERT (rintf (1.0f) == 1.0f);
+      ASSERT (rintf (1.5f) == 2.0f);
+      ASSERT (rintf (1.999f) == 2.0f);
+      ASSERT (rintf (2.0f) == 2.0f);
+      ASSERT (rintf (2.1f) == 2.0f);
+      ASSERT (rintf (2.5f) == 2.0f); /* unlike roundf() */
+      ASSERT (rintf (2.7f) == 3.0f);
+      ASSERT (rintf (65535.99f) == 65536.0f);
+      ASSERT (rintf (65536.0f) == 65536.0f);
+      ASSERT (rintf (65536.01f) == 65536.0f);
+      ASSERT (rintf (2.341e31f) == 2.341e31f);
+      /* Negative numbers.  */
+      ASSERT (rintf (-0.3f) == 0.0f);
+      ASSERT (rintf (-0.5f) == 0.0f); /* unlike roundf() */
+      ASSERT (rintf (-0.7f) == -1.0f);
+      ASSERT (rintf (-1.0f) == -1.0f);
+      ASSERT (rintf (-1.5f) == -2.0f);
+      ASSERT (rintf (-1.999f) == -2.0f);
+      ASSERT (rintf (-2.0f) == -2.0f);
+      ASSERT (rintf (-2.1f) == -2.0f);
+      ASSERT (rintf (-2.5f) == -2.0f); /* unlike roundf() */
+      ASSERT (rintf (-2.7f) == -3.0f);
+      ASSERT (rintf (-65535.99f) == -65536.0f);
+      ASSERT (rintf (-65536.0f) == -65536.0f);
+      ASSERT (rintf (-65536.01f) == -65536.0f);
+      ASSERT (rintf (-2.341e31f) == -2.341e31f);
+      /* Infinite numbers.  */
+      ASSERT (rintf (Infinityf ()) == Infinityf ());
+      ASSERT (rintf (- Infinityf ()) == - Infinityf ());
+      /* NaNs.  */
+      ASSERT (isnanf (rintf (NaNf ())));
+
+      return 0;
+    }
+  else
+    {
+      fputs ("Skipping test: non-standard rounding mode\n", stderr);
+      return 77;
+    }
+}