1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h b/sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h
new file mode 100644
index 0000000000..c37ed861dc
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h
@@ -0,0 +1,43 @@
+/* -mlong-double-64 compatibility mode macros.  */
+
+#ifndef NLDBL_VERSION
+# define NLDBL_VERSION GLIBC_2_4
+#endif
+
+#include <math.h>
+#include <math/math_private.h>
+#include <shlib-compat.h>
+#define LONG_DOUBLE_COMPAT(lib, introduced) \
+  SHLIB_COMPAT(lib, introduced, NLDBL_VERSION)
+#define long_double_symbol(lib, local, symbol) \
+  long_double_symbol_1 (lib, local, symbol, NLDBL_VERSION)
+#if defined HAVE_ELF && defined SHARED && defined DO_VERSIONING
+# define ldbl_hidden_def(local, name) libc_hidden_ver (local, name)
+# define ldbl_strong_alias(name, aliasname) \
+  strong_alias (name, __GL_##name##_##aliasname) \
+  long_double_symbol (libc, __GL_##name##_##aliasname, aliasname);
+# define ldbl_weak_alias(name, aliasname) \
+  weak_alias (name, __GL_##name##_##aliasname) \
+  long_double_symbol (libc, __GL_##name##_##aliasname, aliasname);
+# define long_double_symbol_1(lib, local, symbol, version) \
+  versioned_symbol (lib, local, symbol, version)
+#elif defined HAVE_WEAK_SYMBOLS
+# define ldbl_hidden_def(local, name) libc_hidden_def (name)
+# define ldbl_strong_alias(name, aliasname) strong_alias (name, aliasname)
+# define ldbl_weak_alias(name, aliasname) weak_alias (name, aliasname)
+/* Note that weak_alias cannot be used - it is defined to nothing
+   in most of the files.  */
+# define long_double_symbol_1(lib, local, symbol, version) \
+  _weak_alias (local, symbol)
+#else
+# define ldbl_hidden_def(local, name) libc_hidden_def (name)
+# define ldbl_strong_alias(name, aliasname) strong_alias (name, aliasname)
+# define ldbl_weak_alias(name, aliasname) strong_alias (name, aliasname)
+# define long_double_symbol_1(lib, local, symbol, version) \
+  strong_alias (local, symbol)
+#endif
+
+/* Set temporarily to non-zero if long double should be considered
+   the same as double.  */
+extern __thread int __no_long_double attribute_tls_model_ie attribute_hidden;
+#define __ldbl_is_dbl __builtin_expect (__no_long_double, 0)