Don't define libstdc++-internal macros in Solaris 10+ <math.h>

	libstdc++-v3:
	* acinclude.m4 (GLIBCXX_CHECK_MATH11_PROTO): Update comments.
	(__CORRECT_ISO_CPP11_MATH_H_PROTO): Rename to ...
	(__CORRECT_ISO_CPP11_MATH_H_PROTO_FP): ... this.
	Add test for C++11 <math.h> integral overloads.
	* configure: Regenerate.
	* config.h.in: Regenerate.

	* include/c_global/cmath [__cplusplus >= 201103L]: Reflect
	__CORRECT_ISO_CPP11_MATH_H_PROTO to
	__CORRECT_ISO_CPP11_MATH_H_PROTO_FP rename.
	* include/c_global/cmath [_GLIBCXX_USE_C99_MATH &&
	!_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC && __cplusplus >= 201103L]
	(std::fpclassify): Wrap in !__CORRECT_ISO_CPP11_MATH_H_PROTO_INT.
	(std::isfinite): Likewise.
	(std::isinf): Likewise.
	(std::isnan): Likewise.
	(std::isnormal): Likewise.
	(std::signbit): Likewise.
	(std::isgreater): Likewise.
	(std::isgreaterequal): Likewise.
	(std::isless): Likewise.
	(std::islessequal): Likewise.
	(std::islessgreater): Likewise.
	(std::isunordered): Likewise.
	[__cplusplus >= 201103L && _GLIBCXX_USE_C99_MATH_TR1]
	(std::acosh): Likewise.
	(std::asinh): Likewise.
	(std::atanh): Likewise.
	(std::cbrt): Likewise.
	(std::copysign): Likewise.
	(std::erf): Likewise.
	(std::erfc): Likewise.
	(std::exp2): Likewise.
	(std::expm1): Likewise.
	(std::fdim): Likewise.
	(std::fma): Likewise.
	(std::fmax): Likewise.
	(std::fmin): Likewise.
	(std::hypot): Likewise.
	(std::ilogb): Likewise.
	(std::lgamma): Likewise.
	(std::llrint): Likewise.
	(std::llround): Likewise.
	(std::log1p): Likewise.
	(std::log2): Likewise.
	(std::logb): Likewise.
	(std::lrint): Likewise.
	(std::lround): Likewise.
	(std::nearbyint): Likewise.
	(std::nextafter): Likewise.
	(std::nexttoward): Likewise.
	(std::remainder): Likewise.
	(std::remquo): Likewise.
	(std::rint): Likewise.
	(std::round): Likewise.
	(std::scalbln): Likewise.
	(std::scalbn): Likewise.
	(std::tgamma): Likewise.
	(std::trunc): Likewise.
	* include/tr1/cmath [_GLIBCXX_USE_C99_MATH_TR1 && __cplusplus >=
	201103L]: Reflect __CORRECT_ISO_CPP11_MATH_H_PROTO to
	__CORRECT_ISO_CPP11_MATH_H_PROTO_FP rename.

	fixincludes:
	* inclhack.def (solaris_math_12): New fix.
	(hpux11_fabsf): Replace bypass by *-hp-hpux11* mach selector.
	* fixincl.x: Regenerate.
	* tests/base/math.h [SOLARIS_MATH_12_CHECK]: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242671 138bc75d-0d04-0410-961f-82ee72b054a4

10 files changed, 466 insertions, 122 deletions

diff --git a/fixincludes/ChangeLog b/fixincludes/ChangeLog
index fef9f9fdc6f..d447171a8da 100644
--- a/fixincludes/ChangeLog
+++ b/fixincludes/ChangeLog
@@ -1,3 +1,10 @@
+2016-11-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* inclhack.def (solaris_math_12): New fix.
+	(hpux11_fabsf): Replace bypass by *-hp-hpux11* mach selector.
+	* fixincl.x: Regenerate.
+	* tests/base/math.h [SOLARIS_MATH_12_CHECK]: New test.
+
 2016-11-20  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	PR sanitizer/78267
diff --git a/fixincludes/fixincl.x b/fixincludes/fixincl.x
index 00d03be8ffe..b0eeef9dfdf 100644
--- a/fixincludes/fixincl.x
+++ b/fixincludes/fixincl.x
@@ -2,11 +2,11 @@
  * 
  * DO NOT EDIT THIS FILE   (fixincl.x)
  * 
- * It has been AutoGen-ed  November 20, 2016 at 11:44:36 AM by AutoGen 5.16.2
+ * It has been AutoGen-ed  November 20, 2016 at 12:02:46 PM by AutoGen 5.16.2
  * From the definitions    inclhack.def
  * and the template file   fixincl
  */
-/* DO NOT SVN-MERGE THIS FILE, EITHER Sun Nov 20 11:44:37 MET 2016
+/* DO NOT SVN-MERGE THIS FILE, EITHER Sun Nov 20 12:02:47 MET 2016
  *
  * You must regenerate it.  Use the ./genfixes script.
  *
@@ -15,7 +15,7 @@
  * certain ANSI-incompatible system header files which are fixed to work
  * correctly with ANSI C and placed in a directory that GNU C will search.
  *
- * This file contains 241 fixup descriptions.
+ * This file contains 242 fixup descriptions.
  *
  * See README for more information.
  *
@@ -4507,7 +4507,9 @@ tSCC zHpux11_FabsfList[] =
 /*
  *  Machine/OS name selection pattern
  */
-#define apzHpux11_FabsfMachs (const char**)NULL
+tSCC* apzHpux11_FabsfMachs[] = {
+        "*-hp-hpux11*",
+        (const char*)NULL };
 
 /*
  *  content selection pattern - do fix if pattern found
@@ -4515,15 +4517,8 @@ tSCC zHpux11_FabsfList[] =
 tSCC zHpux11_FabsfSelect0[] =
        "^[ \t]*#[ \t]*define[ \t]+fabsf\\(.*";
 
-/*
- *  content bypass pattern - skip fix if pattern found
- */
-tSCC zHpux11_FabsfBypass0[] =
-       "__cplusplus";
-
-#define    HPUX11_FABSF_TEST_CT  2
+#define    HPUX11_FABSF_TEST_CT  1
 static tTestDesc aHpux11_FabsfTests[] = {
-  { TT_NEGREP,   zHpux11_FabsfBypass0, (regex_t*)NULL },
   { TT_EGREP,    zHpux11_FabsfSelect0, (regex_t*)NULL }, };
 
 /*
@@ -7583,6 +7578,42 @@ static const char* apzSolaris_Math_11Patch[] = {
 
 /* * * * * * * * * * * * * * * * * * * * * * * * * *
  *
+ *  Description of Solaris_Math_12 fix
+ */
+tSCC zSolaris_Math_12Name[] =
+     "solaris_math_12";
+
+/*
+ *  File name selection pattern
+ */
+tSCC zSolaris_Math_12List[] =
+  "math.h\0";
+/*
+ *  Machine/OS name selection pattern
+ */
+tSCC* apzSolaris_Math_12Machs[] = {
+        "*-*-solaris2*",
+        (const char*)NULL };
+
+/*
+ *  content selection pattern - do fix if pattern found
+ */
+tSCC zSolaris_Math_12Select0[] =
+       "#undef.*_GLIBCXX_USE_C99_MATH";
+
+#define    SOLARIS_MATH_12_TEST_CT  1
+static tTestDesc aSolaris_Math_12Tests[] = {
+  { TT_EGREP,    zSolaris_Math_12Select0, (regex_t*)NULL }, };
+
+/*
+ *  Fix Command Arguments for Solaris_Math_12
+ */
+static const char* apzSolaris_Math_12Patch[] = { sed_cmd_z,
+    "-e", "/#undef[ \t]*_GLIBCXX_USE_C99_MATH/d",
+    (char*)NULL };
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * *
+ *
  *  Description of Solaris_Once_Init_1 fix
  */
 tSCC zSolaris_Once_Init_1Name[] =
@@ -9879,7 +9910,7 @@ static const char* apzX11_SprintfPatch[] = {
  */
 #define REGEX_COUNT          279
 #define MACH_LIST_SIZE_LIMIT 187
-#define FIX_COUNT            241
+#define FIX_COUNT            242
 
 /*
  *  Enumerate the fixes
@@ -10068,6 +10099,7 @@ typedef enum {
     SOLARIS_MATH_8_FIXIDX,
     SOLARIS_MATH_9_FIXIDX,
     SOLARIS_MATH_11_FIXIDX,
+    SOLARIS_MATH_12_FIXIDX,
     SOLARIS_ONCE_INIT_1_FIXIDX,
     SOLARIS_POSIX_SPAWN_RESTRICT_FIXIDX,
     SOLARIS_POW_INT_OVERLOAD_FIXIDX,
@@ -11044,6 +11076,11 @@ tFixDesc fixDescList[ FIX_COUNT ] = {
      SOLARIS_MATH_11_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
      aSolaris_Math_11Tests,   apzSolaris_Math_11Patch, 0 },
 
+  {  zSolaris_Math_12Name,    zSolaris_Math_12List,
+     apzSolaris_Math_12Machs,
+     SOLARIS_MATH_12_TEST_CT, FD_MACH_ONLY,
+     aSolaris_Math_12Tests,   apzSolaris_Math_12Patch, 0 },
+
   {  zSolaris_Once_Init_1Name,    zSolaris_Once_Init_1List,
      apzSolaris_Once_Init_1Machs,
      SOLARIS_ONCE_INIT_1_TEST_CT, FD_MACH_ONLY | FD_SUBROUTINE,
diff --git a/fixincludes/inclhack.def b/fixincludes/inclhack.def
index 931161b69ce..240fc7437e6 100644
--- a/fixincludes/inclhack.def
+++ b/fixincludes/inclhack.def
@@ -2334,9 +2334,9 @@ fix = {
  */
 fix = {
     hackname  = hpux11_fabsf;
+    mach      = "*-hp-hpux11*";
     files     = math.h;
     select    = "^[ \t]*#[ \t]*define[ \t]+fabsf\\(.*";
-    bypass    = "__cplusplus";
 
     c_fix     = format;
     c_fix_arg = "#ifndef __cplusplus\n%0\n#endif";
@@ -3868,6 +3868,23 @@ _EOText_;
 };
 
 /*
+ * Some versions of Solaris 10+ <math.h> #undef libstdc++-internal macros.
+ */
+fix = {
+    hackname  = solaris_math_12;
+    files     = math.h;
+    mach      = '*-*-solaris2*';
+    select    = '#undef.*_GLIBCXX_USE_C99_MATH';
+    sed       = "/#undef[ \t]*_GLIBCXX_USE_C99_MATH/d";
+    test_text = << _EOText_
+#if __cplusplus >= 201103L
+#undef  _GLIBCXX_USE_C99_MATH
+#undef  _GLIBCXX_USE_C99_MATH_TR1
+#endif
+_EOText_;
+};
+
+/*
  * Sun Solaris defines PTHREAD_ONCE_INIT as an array containing a
  * structure.  As such, it need two levels of brackets, but only
  * contains one.  Wrap the macro definition in an extra layer.
diff --git a/fixincludes/tests/base/math.h b/fixincludes/tests/base/math.h
index 766017280b5..c7da15ad2c7 100644
--- a/fixincludes/tests/base/math.h
+++ b/fixincludes/tests/base/math.h
@@ -85,6 +85,12 @@ extern int class();
 #endif  /* RS6000_DOUBLE_CHECK */
 
 
+#if defined( SOLARIS_MATH_12_CHECK )
+#if __cplusplus >= 201103L
+#endif
+#endif  /* SOLARIS_MATH_12_CHECK */
+
+
 #if defined( STRICT_ANSI_NOT_CTD_CHECK )
 #if 1 && \
 && defined(mumbling) |& ( !defined(__STRICT_ANSI__)) \
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index d82aaa4aff5..d364e2e48a8 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,68 @@
+2016-11-21  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* acinclude.m4 (GLIBCXX_CHECK_MATH11_PROTO): Update comments.
+	(__CORRECT_ISO_CPP11_MATH_H_PROTO): Rename to ...
+	(__CORRECT_ISO_CPP11_MATH_H_PROTO_FP): ... this.
+	Add test for C++11 <math.h> integral overloads.
+	* configure: Regenerate.
+	* config.h.in: Regenerate.
+
+	* include/c_global/cmath [__cplusplus >= 201103L]: Reflect
+	__CORRECT_ISO_CPP11_MATH_H_PROTO to
+	__CORRECT_ISO_CPP11_MATH_H_PROTO_FP rename.
+	* include/c_global/cmath [_GLIBCXX_USE_C99_MATH &&
+	!_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC && __cplusplus >= 201103L]
+	(std::fpclassify): Wrap in !__CORRECT_ISO_CPP11_MATH_H_PROTO_INT.
+	(std::isfinite): Likewise.
+	(std::isinf): Likewise.
+	(std::isnan): Likewise.
+	(std::isnormal): Likewise.
+	(std::signbit): Likewise.
+	(std::isgreater): Likewise.
+	(std::isgreaterequal): Likewise.
+	(std::isless): Likewise.
+	(std::islessequal): Likewise.
+	(std::islessgreater): Likewise.
+	(std::isunordered): Likewise.
+	[__cplusplus >= 201103L && _GLIBCXX_USE_C99_MATH_TR1]
+	(std::acosh): Likewise.
+	(std::asinh): Likewise.
+	(std::atanh): Likewise.
+	(std::cbrt): Likewise.
+	(std::copysign): Likewise.
+	(std::erf): Likewise.
+	(std::erfc): Likewise.
+	(std::exp2): Likewise.
+	(std::expm1): Likewise.
+	(std::fdim): Likewise.
+	(std::fma): Likewise.
+	(std::fmax): Likewise.
+	(std::fmin): Likewise.
+	(std::hypot): Likewise.
+	(std::ilogb): Likewise.
+	(std::lgamma): Likewise.
+	(std::llrint): Likewise.
+	(std::llround): Likewise.
+	(std::log1p): Likewise.
+	(std::log2): Likewise.
+	(std::logb): Likewise.
+	(std::lrint): Likewise.
+	(std::lround): Likewise.
+	(std::nearbyint): Likewise.
+	(std::nextafter): Likewise.
+	(std::nexttoward): Likewise.
+	(std::remainder): Likewise.
+	(std::remquo): Likewise.
+	(std::rint): Likewise.
+	(std::round): Likewise.
+	(std::scalbln): Likewise.
+	(std::scalbn): Likewise.
+	(std::tgamma): Likewise.
+	(std::trunc): Likewise.
+	* include/tr1/cmath [_GLIBCXX_USE_C99_MATH_TR1 && __cplusplus >=
+	201103L]: Reflect __CORRECT_ISO_CPP11_MATH_H_PROTO to
+	__CORRECT_ISO_CPP11_MATH_H_PROTO_FP rename.
+
 2016-11-15  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/59406
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 1fc4de16e21..c88e4732d0b 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -2181,7 +2181,8 @@ AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [
 ])
 
 dnl
-dnl Check whether required C++11 overloads are present in <math.h>.
+dnl Check whether required C++11 overloads for floating point and integral
+dnl types are present in <math.h>.
 dnl
 AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
 
@@ -2192,10 +2193,10 @@ AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
 
   case "$host" in
     *-*-solaris2.*)
-      # Solaris 12 introduced the C++11 <math.h> overloads.  A backport to
-      # a Solaris 11.3 SRU is likely, maybe even a Solaris 10 patch.
-      AC_MSG_CHECKING([for C++11 <math.h> overloads])
-      AC_CACHE_VAL(glibcxx_cv_math11_overload, [
+      # Solaris 12 Build 86, Solaris 11.3 SRU 3.6, and Solaris 10 Patch
+      # 11996[67]-02 introduced the C++11 <math.h> floating point overloads.
+      AC_MSG_CHECKING([for C++11 <math.h> floating point overloads])
+      AC_CACHE_VAL(glibcxx_cv_math11_fp_overload, [
 	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
 	  [#include <math.h>
 	   #undef isfinite
@@ -2204,21 +2205,73 @@ AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
 	     { return __builtin_isfinite(__x); }
 	   }
 	])],
-	[glibcxx_cv_math11_overload=no],
-	[glibcxx_cv_math11_overload=yes]
+	[glibcxx_cv_math11_fp_overload=no],
+	[glibcxx_cv_math11_fp_overload=yes]
       )])
 
       # autoheader cannot handle indented templates.
-      AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO],
-        [/* Define if all C++11 overloads are available in <math.h>.  */
+      AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO_FP],
+        [/* Define if all C++11 floating point overloads are available in <math.h>.  */
 #if __cplusplus >= 201103L
-#undef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
 #endif])
 
-      if test $glibcxx_cv_math11_overload = yes; then
-        AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO)
+      if test $glibcxx_cv_math11_fp_overload = yes; then
+        AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO_FP)
       fi
-      AC_MSG_RESULT([$glibcxx_cv_math11_overload])
+      AC_MSG_RESULT([$glibcxx_cv_math11_fp_overload])
+
+      # Solaris 12 Build 90, Solaris 11.3 SRU 5.6, and Solaris 10 Patch
+      # 11996[67]-02 introduced the C++11 <math.h> integral type overloads.
+      AC_MSG_CHECKING([for C++11 <math.h> integral type overloads])
+      AC_CACHE_VAL(glibcxx_cv_math11_int_overload, [
+	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
+	  [#include <math.h>
+	   namespace std {
+	     template<typename _Tp>
+	       struct __is_integer;
+	     template<>
+	       struct __is_integer<int>
+	       {
+	         enum { __value = 1 };
+	       };
+	   }
+	   namespace __gnu_cxx {
+	     template<bool, typename>
+	       struct __enable_if;
+	     template<typename _Tp>
+	       struct __enable_if<true, _Tp>
+	       { typedef _Tp __type; };
+	   }
+	   namespace std {
+	     template<typename _Tp>
+	       constexpr typename __gnu_cxx::__enable_if
+	       		 <__is_integer<_Tp>::__value, double>::__type
+	       log2(_Tp __x)
+	       { return __builtin_log2(__x); }
+	   }
+	   int
+	   main (void)
+	   {
+	     int i = 1000;
+	     return std::log2(i);
+	   }
+	])],
+	[glibcxx_cv_math11_int_overload=no],
+	[glibcxx_cv_math11_int_overload=yes]
+      )])
+
+      # autoheader cannot handle indented templates.
+      AH_VERBATIM([__CORRECT_ISO_CPP11_MATH_H_PROTO_INT],
+        [/* Define if all C++11 integral type overloads are available in <math.h>.  */
+#if __cplusplus >= 201103L
+#undef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
+#endif])
+
+      if test $glibcxx_cv_math11_int_overload = yes; then
+        AC_DEFINE(__CORRECT_ISO_CPP11_MATH_H_PROTO_INT)
+      fi
+      AC_MSG_RESULT([$glibcxx_cv_math11_int_overload])
       ;;
     *)
       # If <math.h> defines the obsolete isinf(double) and isnan(double)
diff --git a/libstdc++-v3/config.h.in b/libstdc++-v3/config.h.in
index 63996709ad4..09ddfeb7993 100644
--- a/libstdc++-v3/config.h.in
+++ b/libstdc++-v3/config.h.in
@@ -977,9 +977,14 @@
 /* Define to 1 if mutex_timedlock is available. */
 #undef _GTHREAD_USE_MUTEX_TIMEDLOCK
 
-/* Define if all C++11 overloads are available in <math.h>.  */
+/* Define if all C++11 floating point overloads are available in <math.h>.  */
 #if __cplusplus >= 201103L
-#undef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
+#endif
+
+/* Define if all C++11 integral type overloads are available in <math.h>.  */
+#if __cplusplus >= 201103L
+#undef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
 #endif
 
 #if defined (HAVE__ACOSF) && ! defined (HAVE_ACOSF)
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 55de4badd83..f32197e0fab 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -18236,11 +18236,11 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
   case "$host" in
     *-*-solaris2.*)
-      # Solaris 12 introduced the C++11 <math.h> overloads.  A backport to
-      # a Solaris 11.3 SRU is likely, maybe even a Solaris 10 patch.
-      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C++11 <math.h> overloads" >&5
-$as_echo_n "checking for C++11 <math.h> overloads... " >&6; }
-      if test "${glibcxx_cv_math11_overload+set}" = set; then :
+      # Solaris 12 Build 86, Solaris 11.3 SRU 3.6, and Solaris 10 Patch
+      # 11996[67]-02 introduced the C++11 <math.h> floating point overloads.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C++11 <math.h> floating point overloads" >&5
+$as_echo_n "checking for C++11 <math.h> floating point overloads... " >&6; }
+      if test "${glibcxx_cv_math11_fp_overload+set}" = set; then :
   $as_echo_n "(cached) " >&6
 else
 
@@ -18255,9 +18255,9 @@ else
 
 _ACEOF
 if ac_fn_cxx_try_compile "$LINENO"; then :
-  glibcxx_cv_math11_overload=no
+  glibcxx_cv_math11_fp_overload=no
 else
-  glibcxx_cv_math11_overload=yes
+  glibcxx_cv_math11_fp_overload=yes
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
@@ -18267,12 +18267,74 @@ fi
       # autoheader cannot handle indented templates.
 
 
-      if test $glibcxx_cv_math11_overload = yes; then
-        $as_echo "#define __CORRECT_ISO_CPP11_MATH_H_PROTO 1" >>confdefs.h
+      if test $glibcxx_cv_math11_fp_overload = yes; then
+        $as_echo "#define __CORRECT_ISO_CPP11_MATH_H_PROTO_FP 1" >>confdefs.h
 
       fi
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_math11_overload" >&5
-$as_echo "$glibcxx_cv_math11_overload" >&6; }
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_math11_fp_overload" >&5
+$as_echo "$glibcxx_cv_math11_fp_overload" >&6; }
+
+      # Solaris 12 Build 90, Solaris 11.3 SRU 5.6, and Solaris 10 Patch
+      # 11996[67]-02 introduced the C++11 <math.h> integral type overloads.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking for C++11 <math.h> integral type overloads" >&5
+$as_echo_n "checking for C++11 <math.h> integral type overloads... " >&6; }
+      if test "${glibcxx_cv_math11_int_overload+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <math.h>
+	   namespace std {
+	     template<typename _Tp>
+	       struct __is_integer;
+	     template<>
+	       struct __is_integer<int>
+	       {
+	         enum { __value = 1 };
+	       };
+	   }
+	   namespace __gnu_cxx {
+	     template<bool, typename>
+	       struct __enable_if;
+	     template<typename _Tp>
+	       struct __enable_if<true, _Tp>
+	       { typedef _Tp __type; };
+	   }
+	   namespace std {
+	     template<typename _Tp>
+	       constexpr typename __gnu_cxx::__enable_if
+	       		 <__is_integer<_Tp>::__value, double>::__type
+	       log2(_Tp __x)
+	       { return __builtin_log2(__x); }
+	   }
+	   int
+	   main (void)
+	   {
+	     int i = 1000;
+	     return std::log2(i);
+	   }
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+  glibcxx_cv_math11_int_overload=no
+else
+  glibcxx_cv_math11_int_overload=yes
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+
+      # autoheader cannot handle indented templates.
+
+
+      if test $glibcxx_cv_math11_int_overload = yes; then
+        $as_echo "#define __CORRECT_ISO_CPP11_MATH_H_PROTO_INT 1" >>confdefs.h
+
+      fi
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_math11_int_overload" >&5
+$as_echo "$glibcxx_cv_math11_int_overload" >&6; }
       ;;
     *)
       # If <math.h> defines the obsolete isinf(double) and isnan(double)
diff --git a/libstdc++-v3/include/c_global/cmath b/libstdc++-v3/include/c_global/cmath
index 24ce811adf2..bea9b18ef58 100644
--- a/libstdc++-v3/include/c_global/cmath
+++ b/libstdc++-v3/include/c_global/cmath
@@ -539,7 +539,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 #if __cplusplus >= 201103L
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr int
   fpclassify(float __x)
   { return __builtin_fpclassify(FP_NAN, FP_INFINITE, FP_NORMAL,
@@ -556,13 +556,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 				FP_SUBNORMAL, FP_ZERO, __x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
                                               int>::__type
     fpclassify(_Tp __x)
     { return __x != 0 ? FP_NORMAL : FP_ZERO; }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isfinite(float __x)
   { return __builtin_isfinite(__x); }
@@ -576,13 +578,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isfinite(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
                                               bool>::__type
     isfinite(_Tp __x)
     { return true; }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isinf(float __x)
   { return __builtin_isinf(__x); }
@@ -601,13 +605,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isinf(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
                                               bool>::__type
     isinf(_Tp __x)
     { return false; }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isnan(float __x)
   { return __builtin_isnan(__x); }
@@ -626,13 +632,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isnan(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
                                               bool>::__type
     isnan(_Tp __x)
     { return false; }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isnormal(float __x)
   { return __builtin_isnormal(__x); }
@@ -646,13 +654,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isnormal(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
                                               bool>::__type
     isnormal(_Tp __x)
     { return __x != 0 ? true : false; }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   // Note: middle-end/36757 is fixed, __builtin_signbit is type-generic.
   constexpr bool
   signbit(float __x)
@@ -667,13 +677,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_signbit(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value,
                                               bool>::__type
     signbit(_Tp __x)
     { return __x < 0 ? true : false; }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isgreater(float __x, float __y)
   { return __builtin_isgreater(__x, __y); }
@@ -687,6 +699,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isgreater(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename
     __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
@@ -696,8 +709,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return __builtin_isgreater(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isgreaterequal(float __x, float __y)
   { return __builtin_isgreaterequal(__x, __y); }
@@ -711,6 +725,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isgreaterequal(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename
     __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
@@ -720,8 +735,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return __builtin_isgreaterequal(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isless(float __x, float __y)
   { return __builtin_isless(__x, __y); }
@@ -735,6 +751,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isless(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename
     __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
@@ -744,8 +761,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return __builtin_isless(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   islessequal(float __x, float __y)
   { return __builtin_islessequal(__x, __y); }
@@ -759,6 +777,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_islessequal(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename
     __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
@@ -768,8 +787,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return __builtin_islessequal(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   islessgreater(float __x, float __y)
   { return __builtin_islessgreater(__x, __y); }
@@ -783,6 +803,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_islessgreater(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename
     __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
@@ -792,8 +813,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return __builtin_islessgreater(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr bool
   isunordered(float __x, float __y)
   { return __builtin_isunordered(__x, __y); }
@@ -807,6 +829,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_isunordered(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename
     __gnu_cxx::__enable_if<(__is_arithmetic<_Tp>::__value
@@ -816,6 +839,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return __builtin_isunordered(__type(__x), __type(__y));
     }
+#endif
 
 #else
 
@@ -1196,7 +1220,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   using ::truncl;
 
   /// Additional overloads.
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   acosh(float __x)
   { return __builtin_acoshf(__x); }
@@ -1206,13 +1230,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_acoshl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     acosh(_Tp __x)
     { return __builtin_acosh(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   asinh(float __x)
   { return __builtin_asinhf(__x); }
@@ -1222,13 +1248,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_asinhl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     asinh(_Tp __x)
     { return __builtin_asinh(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   atanh(float __x)
   { return __builtin_atanhf(__x); }
@@ -1238,13 +1266,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_atanhl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     atanh(_Tp __x)
     { return __builtin_atanh(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   cbrt(float __x)
   { return __builtin_cbrtf(__x); }
@@ -1254,13 +1284,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_cbrtl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     cbrt(_Tp __x)
     { return __builtin_cbrt(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   copysign(float __x, float __y)
   { return __builtin_copysignf(__x, __y); }
@@ -1270,6 +1302,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_copysignl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     copysign(_Tp __x, _Up __y)
@@ -1277,8 +1310,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return copysign(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   erf(float __x)
   { return __builtin_erff(__x); }
@@ -1288,13 +1322,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_erfl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     erf(_Tp __x)
     { return __builtin_erf(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   erfc(float __x)
   { return __builtin_erfcf(__x); }
@@ -1304,13 +1340,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_erfcl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     erfc(_Tp __x)
     { return __builtin_erfc(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   exp2(float __x)
   { return __builtin_exp2f(__x); }
@@ -1320,13 +1358,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_exp2l(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     exp2(_Tp __x)
     { return __builtin_exp2(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   expm1(float __x)
   { return __builtin_expm1f(__x); }
@@ -1336,13 +1376,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_expm1l(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     expm1(_Tp __x)
     { return __builtin_expm1(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   fdim(float __x, float __y)
   { return __builtin_fdimf(__x, __y); }
@@ -1352,6 +1394,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_fdiml(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     fdim(_Tp __x, _Up __y)
@@ -1359,8 +1402,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return fdim(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   fma(float __x, float __y, float __z)
   { return __builtin_fmaf(__x, __y, __z); }
@@ -1370,6 +1414,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_fmal(__x, __y, __z); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up, typename _Vp>
     constexpr typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type
     fma(_Tp __x, _Up __y, _Vp __z)
@@ -1377,8 +1422,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_3<_Tp, _Up, _Vp>::__type __type;
       return fma(__type(__x), __type(__y), __type(__z));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   fmax(float __x, float __y)
   { return __builtin_fmaxf(__x, __y); }
@@ -1388,6 +1434,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_fmaxl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     fmax(_Tp __x, _Up __y)
@@ -1395,8 +1442,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return fmax(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   fmin(float __x, float __y)
   { return __builtin_fminf(__x, __y); }
@@ -1406,6 +1454,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_fminl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     fmin(_Tp __x, _Up __y)
@@ -1413,8 +1462,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return fmin(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   hypot(float __x, float __y)
   { return __builtin_hypotf(__x, __y); }
@@ -1424,6 +1474,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_hypotl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     hypot(_Tp __x, _Up __y)
@@ -1431,8 +1482,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return hypot(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr int
   ilogb(float __x)
   { return __builtin_ilogbf(__x); }
@@ -1442,14 +1494,16 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_ilogbl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr
     typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                     int>::__type
     ilogb(_Tp __x)
     { return __builtin_ilogb(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   lgamma(float __x)
   { return __builtin_lgammaf(__x); }
@@ -1459,13 +1513,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_lgammal(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     lgamma(_Tp __x)
     { return __builtin_lgamma(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr long long
   llrint(float __x)
   { return __builtin_llrintf(__x); }
@@ -1475,13 +1531,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_llrintl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               long long>::__type
     llrint(_Tp __x)
     { return __builtin_llrint(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr long long
   llround(float __x)
   { return __builtin_llroundf(__x); }
@@ -1491,13 +1549,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_llroundl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               long long>::__type
     llround(_Tp __x)
     { return __builtin_llround(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   log1p(float __x)
   { return __builtin_log1pf(__x); }
@@ -1507,13 +1567,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_log1pl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     log1p(_Tp __x)
     { return __builtin_log1p(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   // DR 568.
   constexpr float
   log2(float __x)
@@ -1524,13 +1586,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_log2l(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     log2(_Tp __x)
     { return __builtin_log2(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   logb(float __x)
   { return __builtin_logbf(__x); }
@@ -1540,13 +1604,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_logbl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     logb(_Tp __x)
     { return __builtin_logb(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr long
   lrint(float __x)
   { return __builtin_lrintf(__x); }
@@ -1556,13 +1622,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_lrintl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               long>::__type
     lrint(_Tp __x)
     { return __builtin_lrint(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr long
   lround(float __x)
   { return __builtin_lroundf(__x); }
@@ -1572,13 +1640,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_lroundl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               long>::__type
     lround(_Tp __x)
     { return __builtin_lround(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   nearbyint(float __x)
   { return __builtin_nearbyintf(__x); }
@@ -1588,13 +1658,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_nearbyintl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     nearbyint(_Tp __x)
     { return __builtin_nearbyint(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   nextafter(float __x, float __y)
   { return __builtin_nextafterf(__x, __y); }
@@ -1604,6 +1676,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_nextafterl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     nextafter(_Tp __x, _Up __y)
@@ -1611,8 +1684,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return nextafter(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   nexttoward(float __x, long double __y)
   { return __builtin_nexttowardf(__x, __y); }
@@ -1622,13 +1696,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_nexttowardl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     nexttoward(_Tp __x, long double __y)
     { return __builtin_nexttoward(__x, __y); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   remainder(float __x, float __y)
   { return __builtin_remainderf(__x, __y); }
@@ -1638,6 +1714,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_remainderl(__x, __y); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     remainder(_Tp __x, _Up __y)
@@ -1645,8 +1722,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return remainder(__type(__x), __type(__y));
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   remquo(float __x, float __y, int* __pquo)
   { return __builtin_remquof(__x, __y, __pquo); }
@@ -1656,6 +1734,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_remquol(__x, __y, __pquo); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp, typename _Up>
     inline typename __gnu_cxx::__promote_2<_Tp, _Up>::__type
     remquo(_Tp __x, _Up __y, int* __pquo)
@@ -1663,8 +1742,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       typedef typename __gnu_cxx::__promote_2<_Tp, _Up>::__type __type;
       return remquo(__type(__x), __type(__y), __pquo);
     }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   rint(float __x)
   { return __builtin_rintf(__x); }
@@ -1674,13 +1754,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_rintl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     rint(_Tp __x)
     { return __builtin_rint(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   round(float __x)
   { return __builtin_roundf(__x); }
@@ -1690,13 +1772,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_roundl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     round(_Tp __x)
     { return __builtin_round(__x); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   scalbln(float __x, long __ex)
   { return __builtin_scalblnf(__x, __ex); }
@@ -1706,13 +1790,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_scalblnl(__x, __ex); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     scalbln(_Tp __x, long __ex)
     { return __builtin_scalbln(__x, __ex); }
+#endif
  
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   scalbn(float __x, int __ex)
   { return __builtin_scalbnf(__x, __ex); }
@@ -1722,13 +1808,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_scalbnl(__x, __ex); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     scalbn(_Tp __x, int __ex)
     { return __builtin_scalbn(__x, __ex); }
+#endif
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   tgamma(float __x)
   { return __builtin_tgammaf(__x); }
@@ -1738,13 +1826,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_tgammal(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     tgamma(_Tp __x)
     { return __builtin_tgamma(__x); }
+#endif
  
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   constexpr float
   trunc(float __x)
   { return __builtin_truncf(__x); }
@@ -1754,11 +1844,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   { return __builtin_truncl(__x); }
 #endif
 
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
   template<typename _Tp>
     constexpr typename __gnu_cxx::__enable_if<__is_integer<_Tp>::__value, 
                                               double>::__type
     trunc(_Tp __x)
     { return __builtin_trunc(__x); }
+#endif
 
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace
diff --git a/libstdc++-v3/include/tr1/cmath b/libstdc++-v3/include/tr1/cmath
index 7f77a2b01ad..9a4a1764ca1 100644
--- a/libstdc++-v3/include/tr1/cmath
+++ b/libstdc++-v3/include/tr1/cmath
@@ -490,7 +490,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
   // In C++03 we need to provide the additional overloads.
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   acosh(float __x)
   { return __builtin_acoshf(__x); }
@@ -506,7 +506,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     acosh(_Tp __x)
     { return __builtin_acosh(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   asinh(float __x)
   { return __builtin_asinhf(__x); }
@@ -522,7 +522,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     asinh(_Tp __x)
     { return __builtin_asinh(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   atanh(float __x)
   { return __builtin_atanhf(__x); }
@@ -538,7 +538,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     atanh(_Tp __x)
     { return __builtin_atanh(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   cbrt(float __x)
   { return __builtin_cbrtf(__x); }
@@ -554,7 +554,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     cbrt(_Tp __x)
     { return __builtin_cbrt(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   copysign(float __x, float __y)
   { return __builtin_copysignf(__x, __y); }
@@ -572,7 +572,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return copysign(__type(__x), __type(__y));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   erf(float __x)
   { return __builtin_erff(__x); }
@@ -588,7 +588,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     erf(_Tp __x)
     { return __builtin_erf(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   erfc(float __x)
   { return __builtin_erfcf(__x); }
@@ -604,7 +604,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     erfc(_Tp __x)
     { return __builtin_erfc(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   exp2(float __x)
   { return __builtin_exp2f(__x); }
@@ -620,7 +620,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     exp2(_Tp __x)
     { return __builtin_exp2(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   expm1(float __x)
   { return __builtin_expm1f(__x); }
@@ -636,7 +636,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     expm1(_Tp __x)
     { return __builtin_expm1(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   fdim(float __x, float __y)
   { return __builtin_fdimf(__x, __y); }
@@ -654,7 +654,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return fdim(__type(__x), __type(__y));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   fma(float __x, float __y, float __z)
   { return __builtin_fmaf(__x, __y, __z); }
@@ -672,7 +672,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return fma(__type(__x), __type(__y), __type(__z));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   fmax(float __x, float __y)
   { return __builtin_fmaxf(__x, __y); }
@@ -690,7 +690,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return fmax(__type(__x), __type(__y));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   fmin(float __x, float __y)
   { return __builtin_fminf(__x, __y); }
@@ -708,7 +708,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return fmin(__type(__x), __type(__y));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   hypot(float __x, float __y)
   { return __builtin_hypotf(__x, __y); }
@@ -726,7 +726,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return hypot(__type(__y), __type(__x));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline int
   ilogb(float __x)
   { return __builtin_ilogbf(__x); }
@@ -742,7 +742,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     ilogb(_Tp __x)
     { return __builtin_ilogb(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   lgamma(float __x)
   { return __builtin_lgammaf(__x); }
@@ -758,7 +758,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     lgamma(_Tp __x)
     { return __builtin_lgamma(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline long long
   llrint(float __x)
   { return __builtin_llrintf(__x); }
@@ -774,7 +774,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     llrint(_Tp __x)
     { return __builtin_llrint(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline long long
   llround(float __x)
   { return __builtin_llroundf(__x); }
@@ -790,7 +790,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     llround(_Tp __x)
     { return __builtin_llround(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   log1p(float __x)
   { return __builtin_log1pf(__x); }
@@ -807,7 +807,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     { return __builtin_log1p(__x); }
 
   // DR 568.
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   log2(float __x)
   { return __builtin_log2f(__x); }
@@ -823,7 +823,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     log2(_Tp __x)
     { return __builtin_log2(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   logb(float __x)
   { return __builtin_logbf(__x); }
@@ -841,7 +841,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return __builtin_logb(__x);
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline long
   lrint(float __x)
   { return __builtin_lrintf(__x); }
@@ -857,7 +857,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     lrint(_Tp __x)
     { return __builtin_lrint(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline long
   lround(float __x)
   { return __builtin_lroundf(__x); }
@@ -873,7 +873,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     lround(_Tp __x)
     { return __builtin_lround(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   nearbyint(float __x)
   { return __builtin_nearbyintf(__x); }
@@ -889,7 +889,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     nearbyint(_Tp __x)
     { return __builtin_nearbyint(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   nextafter(float __x, float __y)
   { return __builtin_nextafterf(__x, __y); }
@@ -907,7 +907,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return nextafter(__type(__x), __type(__y));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   nexttoward(float __x, long double __y)
   { return __builtin_nexttowardf(__x, __y); }
@@ -923,7 +923,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     nexttoward(_Tp __x, long double __y)
     { return __builtin_nexttoward(__x, __y); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   remainder(float __x, float __y)
   { return __builtin_remainderf(__x, __y); }
@@ -941,7 +941,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return remainder(__type(__x), __type(__y));
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   remquo(float __x, float __y, int* __pquo)
   { return __builtin_remquof(__x, __y, __pquo); }
@@ -959,7 +959,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       return remquo(__type(__x), __type(__y), __pquo);
     }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   rint(float __x)
   { return __builtin_rintf(__x); }
@@ -975,7 +975,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     rint(_Tp __x)
     { return __builtin_rint(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   round(float __x)
   { return __builtin_roundf(__x); }
@@ -991,7 +991,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     round(_Tp __x)
     { return __builtin_round(__x); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   scalbln(float __x, long __ex)
   { return __builtin_scalblnf(__x, __ex); }
@@ -1007,7 +1007,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     scalbln(_Tp __x, long __ex)
     { return __builtin_scalbln(__x, __ex); }
  
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   scalbn(float __x, int __ex)
   { return __builtin_scalbnf(__x, __ex); }
@@ -1023,7 +1023,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     scalbn(_Tp __x, int __ex)
     { return __builtin_scalbn(__x, __ex); }
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   tgamma(float __x)
   { return __builtin_tgammaf(__x); }
@@ -1039,7 +1039,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     tgamma(_Tp __x)
     { return __builtin_tgamma(__x); }
  
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   trunc(float __x)
   { return __builtin_truncf(__x); }
@@ -1084,7 +1084,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   // the discussion about this issue here:
   // http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01278.html
 
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   pow(float __x, float __y)
   { return std::pow(__x, __y); }
@@ -1112,7 +1112,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   // to std::fabs.
 
 #ifndef __CORRECT_ISO_CPP_MATH_H_PROTO
-#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO
+#ifndef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
   inline float
   fabs(float __x)
   { return __builtin_fabsf(__x); }