libm: allow long double wrappers for all architectures

If you enable these wrappers, be sure you don't need long double
precision on your embedded device, as these only enables
long double warpper functions to the existing double math
functions. Required to build some software as lvm2.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>

extra/Configs/Config.in.arch

@@ -195,6 +195,7 @@ config UCLIBC_HAS_LONG_DOUBLE_MATH
 	help
 	  If you want the uClibc math library to contain the full set of C99
 	  long double math library features, then answer Y.
+	  Danger: These are only wrappers to the double library functions!
 
 config KERNEL_HEADERS
 	string "Linux kernel header location"

libc/sysdeps/linux/arm/bits/mathdef.h

@@ -34,10 +34,6 @@ typedef double double_t;	/* `double' expressions are evaluated as
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  This disables the
-   declaration of all the `long double' function variants.  */
-/* XXX The FPA does support this but the patterns in GCC are currently
-   turned off.  */
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/c6x/bits/mathdef.h

@@ -31,8 +31,6 @@ typedef double double_t;
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  This disables the
-   declaration of all the `long double' function variants.  */
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/common/bits/mathdef.h

@@ -35,8 +35,6 @@ typedef double double_t;	/* `double' expressions are evaluated as
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  The disables the
-   declaration of all the `long double' function variants.  */
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/mips/bits/mathdef.h

@@ -37,10 +37,6 @@ typedef double double_t;	/* `double' expressions are evaluated as
 
 #endif	/* ISO C99 */
 
-#if ! defined __NO_LONG_DOUBLE_MATH && _MIPS_SIM == _ABIO32
-/* Signal that we do not really have a `long double'.  This disables the
-   declaration of all the `long double' function variants.  */
-# define __NO_LONG_DOUBLE_MATH	1
-#elif !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/nios2/bits/mathdef.h

@@ -34,10 +34,6 @@ typedef double double_t;	/* `double' expressions are evaluated as
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  This disables the
-   declaration of all the `long double' function variants.  */
-/* XXX The FPA does support this but the patterns in GCC are currently
-   turned off.  */
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/sh/bits/mathdef.h

@@ -41,8 +41,6 @@ typedef double double_t;	/* `double' expressions are evaluated as
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  The disables the
-   declaration of all the `long double' function variants.  */
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/sparc/bits/mathdef.h

@@ -20,8 +20,6 @@
 # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
 #endif
 
-#include <bits/wordsize.h>
-
 /* FIXME! This file describes properties of the compiler, not the machine;
    it should not be part of libc!  */
 
@@ -38,15 +36,6 @@ typedef double double_t;
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-
-# if __WORDSIZE == 32
-/* Signal that in 32bit ABI we do not really have a `long double'.
-   The disables the declaration of all the `long double' function
-   variants.  */
-#  define __NO_LONG_DOUBLE_MATH	1
-# elif !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
-#  define __NO_LONG_DOUBLE_MATH	1
-# endif
-
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
+# define __NO_LONG_DOUBLE_MATH	1
 #endif

libc/sysdeps/linux/xtensa/bits/mathdef.h

@@ -35,8 +35,6 @@ typedef double double_t;	/* `double' expressions are evaluated as
 
 #endif	/* ISO C99 */
 
-#ifndef __NO_LONG_DOUBLE_MATH
-/* Signal that we do not really have a `long double'.  The disables the
-   declaration of all the `long double' function variants.  */
+#if !defined __NO_LONG_DOUBLE_MATH && !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
 # define __NO_LONG_DOUBLE_MATH	1
 #endif