Add headers for _Float64, _Float32x testing.

This patch adds the headers required for testing _Float64 and
_Float32x function aliases (using double ulps).  The corresponding
makefile support will be included in the patch that actually adds
those aliases; there doesn't seem much point in adding makefile
conditionals for testing something that will be available
unconditionally.

In conjunction with other _Float64 / _Float32x changes, test for
x86_64 and with build-many-glibcs.py.

	* math/test-float32x.h: New file.
	* math/test-float64.h: Likewise.

1 files changed, 37 insertions, 0 deletions

diff --git a/math/test-float32x.h b/math/test-float32x.h
new file mode 100644
index 0000000000..2d73958314
--- /dev/null
+++ b/math/test-float32x.h
@@ -0,0 +1,37 @@
+/* Common definitions for libm tests for _Float32x.
+
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "test-math-floatn.h"
+
+/* Fixup builtins and constants for older compilers.  */
+#include <bits/floatn.h>
+#include <float.h>
+
+#define FUNC(function) function ## f32x
+#define FLOAT _Float32x
+#define CFLOAT __CFLOAT32X
+#define BUILD_COMPLEX(real, imag) (CMPLXF32X ((real), (imag)))
+#define PREFIX FLT32X
+#define TYPE_STR "double"
+#define ULP_IDX ULP_DBL
+#define ULP_I_IDX ULP_I_DBL
+#define LIT(x) __f32x (x)
+#define LITM(x) x ## f32x
+#define FTOSTR strfromf32x
+#define snan_value_MACRO SNANF32X