Index: uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/wordsize.h
===================================================================
--- uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/wordsize.h	(revision 25503)
+++ uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/wordsize.h	(working copy)
@@ -14,6 +14,6 @@
    to the double functions.  */
 # define __LONG_DOUBLE_MATH_OPTIONAL   1
 # ifndef __LONG_DOUBLE_128__
-#  undef __UCLIBC_HAS_LONG_DOUBLE_MATH__
+#  define __NO_LONG_DOUBLE_MATH	1
 # endif
 #endif
Index: uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/mathdef.h
===================================================================
--- uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/mathdef.h	(revision 25503)
+++ uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/mathdef.h	(working copy)
@@ -70,6 +70,8 @@ typedef double double_t;
 /* Signal that we do not really have a `long double'.  The disables the
    declaration of all the `long double' function variants.  */
 # if __WORDSIZE == 32
-#  undef __UCLIBC_HAS_LONG_DOUBLE_MATH__
+#  define __NO_LONG_DOUBLE_MATH	1
+# elif !defined __UCLIBC_HAS_LONG_DOUBLE_MATH__
+#  define __NO_LONG_DOUBLE_MATH	1
 # endif  /* __WORDSIZE == 32 */
 #endif  /* __UCLIBC_HAS_LONG_DOUBLE_MATH__ */
Index: uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/mathinline.h
===================================================================
--- uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/mathinline.h	(revision 25503)
+++ uClibc-0.9.30.1/libc/sysdeps/linux/powerpc/bits/mathinline.h	(working copy)
@@ -107,6 +107,14 @@ __NTH (lrintf (float __x))
 }
 # endif
 
+/* __MATH_INLINE int
+__NTH (__finite (double __x))
+{
+  return (__extension__
+    (((union { double __d; int __i[2]; }) { __d: __x}.__i[1]
+      & 0x7fffffff) - 0x7ff00000) >> 31);
+}
+*/
 __MATH_INLINE double fdim (double __x, double __y) __THROW;
 __MATH_INLINE double
 __NTH (fdim (double __x, double __y))