1 files changed, 74 insertions, 0 deletions
diff --git a/gnulib-tests/minus-zero.h b/gnulib-tests/minus-zero.h
new file mode 100644
index 0000000..df939ff
--- /dev/null
+++ b/gnulib-tests/minus-zero.h
@@ -0,0 +1,74 @@
+/* Macros for floating-point negative zero.
+   Copyright (C) 2010-2020 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 <https://www.gnu.org/licenses/>.  */
+
+/* Keep in sync with m4/minus-zero.m4!  */
+
+#include <float.h>
+
+
+/* minus_zerof represents the value -0.0f.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
+   ICC 10.0 has a bug when optimizing the expression -zero.
+   The expression -FLT_MIN * FLT_MIN does not work when cross-compiling
+   to PowerPC on Mac OS X 10.5.  */
+#if defined __hpux || defined __sgi || defined __ICC
+static float
+compute_minus_zerof (void)
+{
+  return -FLT_MIN * FLT_MIN;
+}
+# define minus_zerof compute_minus_zerof ()
+#else
+float minus_zerof = -0.0f;
+#endif
+
+
+/* minus_zerod represents the value -0.0.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
+   ICC 10.0 has a bug when optimizing the expression -zero.
+   The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
+   to PowerPC on Mac OS X 10.5.  */
+#if defined __hpux || defined __sgi || defined __ICC
+static double
+compute_minus_zerod (void)
+{
+  return -DBL_MIN * DBL_MIN;
+}
+# define minus_zerod compute_minus_zerod ()
+#else
+double minus_zerod = -0.0;
+#endif
+
+
+/* minus_zerol represents the value -0.0L.  */
+
+/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0L.
+   IRIX cc can't put -0.0L into .data, but can compute at runtime.
+   ICC 10.0 has a bug when optimizing the expression -zero.
+   The expression -LDBL_MIN * LDBL_MIN does not work when cross-compiling
+   to PowerPC on Mac OS X 10.5.  */
+#if defined __hpux || defined __sgi || defined __ICC
+static long double
+compute_minus_zerol (void)
+{
+  return -LDBL_MIN * LDBL_MIN;
+}
+# define minus_zerol compute_minus_zerol ()
+#else
+long double minus_zerol = -0.0L;
+#endif