Allow direct use of math_ldbl.h in testsuite.

A few 'long double'-related tests include math_private.h just for
their variety of math_ldbl.h, which contains macros for assembling and
disassembling the binary representation of 'long double'.  math_ldbl.h
insists on being included from math_private.h, but if we relax this
restriction (and fix some portability sloppiness) we can use it
directly and not have to expose all of math_private.h to the testsuite.

	* sysdeps/generic/math_private.h: Use __BIG_ENDIAN and
	__LITTLE_ENDIAN, not BIG_ENDIAN and LITTLE_ENDIAN.

	* sysdeps/generic/math_ldbl.h
	* sysdeps/ia64/fpu/math_ldbl.h
	* sysdeps/ieee754/ldbl-128/math_ldbl.h
	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h
	* sysdeps/ieee754/ldbl-96/math_ldbl.h
	* sysdeps/powerpc/fpu/math_ldbl.h
	* sysdeps/x86_64/fpu/math_ldbl.h:
	Allow direct inclusion.  Use uintNN_t instead of u_intNN_t.
	Use __BIG_ENDIAN and __LITTLE_ENDIAN, not BIG_ENDIAN and
	LITTLE_ENDIAN.  Include endian.h and/or stdint.h if necessary.
	Add copyright notices.

	* sysdeps/ieee754/ldbl-128ibm/math_ldbl.h (ldbl_canonicalize_int):
	Don't use EXTRACT_WORDS64.

	* sysdeps/ieee754/ldbl-96/test-canonical-ldbl-96.c
	* sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c
	* sysdeps/ieee754/ldbl-128ibm/test-canonical-ldbl-128ibm.c
	* sysdeps/ieee754/ldbl-128ibm/test-totalorderl-ldbl-128ibm.c:
	Include math_ldbl.h, not math_private.h.

3 files changed, 33 insertions, 11 deletions

diff --git a/sysdeps/ieee754/ldbl-96/math_ldbl.h b/sysdeps/ieee754/ldbl-96/math_ldbl.h
index cca30657ce..ef897065b7 100644
--- a/sysdeps/ieee754/ldbl-96/math_ldbl.h
+++ b/sysdeps/ieee754/ldbl-96/math_ldbl.h
@@ -1,11 +1,31 @@
-#ifndef _MATH_PRIVATE_H_
-#error "Never use <math_ldbl.h> directly; include <math_private.h> instead."
-#endif
+/* Manipulation of the bit representation of 'long double' quantities.
+   Copyright (C) 1999-2017 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/>.  */
+
+#ifndef _MATH_LDBL_H_
+#define _MATH_LDBL_H_ 1
+
+#include <stdint.h>
+#include <endian.h>
 
 /* A union which permits us to convert between a long double and
    three 32 bit ints.  */
 
-#if __FLOAT_WORD_ORDER == BIG_ENDIAN
+#if __FLOAT_WORD_ORDER == __BIG_ENDIAN
 
 typedef union
 {
@@ -14,22 +34,22 @@ typedef union
   {
     int sign_exponent:16;
     unsigned int empty:16;
-    u_int32_t msw;
-    u_int32_t lsw;
+    uint32_t msw;
+    uint32_t lsw;
   } parts;
 } ieee_long_double_shape_type;
 
 #endif
 
-#if __FLOAT_WORD_ORDER == LITTLE_ENDIAN
+#if __FLOAT_WORD_ORDER == __LITTLE_ENDIAN
 
 typedef union
 {
   long double value;
   struct
   {
-    u_int32_t lsw;
-    u_int32_t msw;
+    uint32_t lsw;
+    uint32_t msw;
     int sign_exponent:16;
     unsigned int empty:16;
   } parts;
@@ -96,3 +116,5 @@ do {								\
   se_u.parts.sign_exponent = (exp);				\
   (d) = se_u.value;						\
 } while (0)
+
+#endif /* math_ldbl.h */
diff --git a/sysdeps/ieee754/ldbl-96/test-canonical-ldbl-96.c b/sysdeps/ieee754/ldbl-96/test-canonical-ldbl-96.c
index db9db04367..3254097754 100644
--- a/sysdeps/ieee754/ldbl-96/test-canonical-ldbl-96.c
+++ b/sysdeps/ieee754/ldbl-96/test-canonical-ldbl-96.c
@@ -18,7 +18,7 @@
 
 #include <float.h>
 #include <math.h>
-#include <math_private.h>
+#include <math_ldbl.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
diff --git a/sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c b/sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c
index eb21956e4f..4e01f15aa9 100644
--- a/sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c
+++ b/sysdeps/ieee754/ldbl-96/test-totalorderl-ldbl-96.c
@@ -18,7 +18,7 @@
 
 #include <float.h>
 #include <math.h>
-#include <math_private.h>
+#include <math_ldbl.h>
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>