1 files changed, 82 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128/math_ldbl.h b/sysdeps/ieee754/ldbl-128/math_ldbl.h
new file mode 100644
index 0000000000..aecb20a972
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128/math_ldbl.h
@@ -0,0 +1,82 @@
+#ifndef _MATH_PRIVATE_H_
+#error "Never use <math_ldbl.h> directly; include <math_private.h> instead."
+#endif
+
+/* A union which permits us to convert between a long double and
+   four 32 bit ints or two 64 bit ints.  */
+
+#if __FLOAT_WORD_ORDER == BIG_ENDIAN
+
+typedef union
+{
+  long double value;
+  struct
+  {
+    u_int64_t msw;
+    u_int64_t lsw;
+  } parts64;
+  struct
+  {
+    u_int32_t w0, w1, w2, w3;
+  } parts32;
+} ieee854_long_double_shape_type;
+
+#endif
+
+#if __FLOAT_WORD_ORDER == LITTLE_ENDIAN
+
+typedef union
+{
+  long double value;
+  struct
+  {
+    u_int64_t lsw;
+    u_int64_t msw;
+  } parts64;
+  struct
+  {
+    u_int32_t w3, w2, w1, w0;
+  } parts32;
+} ieee854_long_double_shape_type;
+
+#endif
+
+/* Get two 64 bit ints from a long double.  */
+
+#define GET_LDOUBLE_WORDS64(ix0,ix1,d)				\
+do {								\
+  ieee854_long_double_shape_type qw_u;				\
+  qw_u.value = (d);						\
+  (ix0) = qw_u.parts64.msw;					\
+  (ix1) = qw_u.parts64.lsw;					\
+} while (0)
+
+/* Set a long double from two 64 bit ints.  */
+
+#define SET_LDOUBLE_WORDS64(d,ix0,ix1)				\
+do {								\
+  ieee854_long_double_shape_type qw_u;				\
+  qw_u.parts64.msw = (ix0);					\
+  qw_u.parts64.lsw = (ix1);					\
+  (d) = qw_u.value;						\
+} while (0)
+
+/* Get the more significant 64 bits of a long double mantissa.  */
+
+#define GET_LDOUBLE_MSW64(v,d)					\
+do {								\
+  ieee854_long_double_shape_type sh_u;				\
+  sh_u.value = (d);						\
+  (v) = sh_u.parts64.msw;					\
+} while (0)
+
+/* Set the more significant 64 bits of a long double mantissa from an int.  */
+
+#define SET_LDOUBLE_MSW64(d,v)					\
+do {								\
+  ieee854_long_double_shape_type sh_u;				\
+  sh_u.value = (d);						\
+  sh_u.parts64.msw = (v);					\
+  (d) = sh_u.value;						\
+} while (0)
+