Handle more _FloatN, _FloatNx types in include/float.h.

Continuing the preparation for additional _FloatN / _FloatNx type
support, this patch adds support in include/float.h.  This header
defines macros for _Float128 properties when using compilers before
GCC 7 that lack those macros in <float.h>.  For testing _Float32 /
_Float64 / _Float32x / _Float64x functions with older compilers, such
macros need to be defined for those types as well; for the older
compilers, those types will always be typedefs for another type, so
the definitions can be in terms of the macros for that other type.

Tested for x86_64.

	* include/float.h
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MANT_DIG): New macro.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_DECIMAL_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MIN_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MIN_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MAX_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MAX_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MAX): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_EPSILON): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32] (FLT32_TRUE_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MANT_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_DECIMAL_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MIN_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MIN_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MAX_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MAX_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MAX): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_EPSILON): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64] (FLT64_TRUE_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MANT_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_DECIMAL_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MIN_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MIN_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MAX_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MAX_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MAX): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_EPSILON): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT32X] (FLT32X_TRUE_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MANT_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_DECIMAL_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_DIG): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MIN_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MIN_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MAX_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MAX_10_EXP): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MAX): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_EPSILON): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_MIN): Likewise.
	[!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
	&& __HAVE_FLOAT64X] (FLT64X_TRUE_MIN): Likewise.

diff --git a/ChangeLog b/ChangeLog
index 862c98e771c2734ceb59ad99c6eac3ace7870d67..bc8c473f09e27636e1f3eb07aeb5a3113474e3a0 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,95 @@
 2017-11-07  Joseph Myers  <joseph@codesourcery.com>
 
+       * include/float.h
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MANT_DIG): New macro.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_DECIMAL_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MIN_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MIN_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MAX_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MAX_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MAX): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_EPSILON): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32] (FLT32_TRUE_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MANT_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_DECIMAL_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MIN_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MIN_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MAX_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MAX_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MAX): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_EPSILON): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64] (FLT64_TRUE_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MANT_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_DECIMAL_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MIN_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MIN_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MAX_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MAX_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MAX): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_EPSILON): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT32X] (FLT32X_TRUE_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MANT_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_DECIMAL_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_DIG): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MIN_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MIN_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MAX_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MAX_10_EXP): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MAX): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_EPSILON): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_MIN): Likewise.
+       [!__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+       && __HAVE_FLOAT64X] (FLT64X_TRUE_MIN): Likewise.
+
        * stdlib/tst-strtod.h (F16): New macro.
        (F32): Likewise.
        (F64): Likewise.

diff --git a/include/float.h b/include/float.h
index 939c83de4f5ac29b4e5385bced24cf8f3bce1096..7e65bb83cbe2aa775ab2b443e418d40ef3e8b74d 100644 (file)
--- a/include/float.h
+++ b/include/float.h
@@ -10,28 +10,104 @@
 
 #include_next <float.h>
 
-/* Supplement float.h macros for _Float128 for older compilers
-   which do not yet support the type.  These are described in
-   TS 18661-3.  */
+/* Supplement float.h macros for _FloatN and _FloatNx for older
+   compilers which do not yet support the type.  These are described
+   in TS 18661-3.  */
 #include <features.h>
 #include <bits/floatn.h>
-#if !__GNUC_PREREQ (7, 0) \
-    && __HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)
-# define FLT128_MANT_DIG       113
-# define FLT128_DECIMAL_DIG    36
-# define FLT128_DIG            33
-# define FLT128_MIN_EXP                (-16381)
-# define FLT128_MIN_10_EXP     (-4931)
-# define FLT128_MAX_EXP                16384
-# define FLT128_MAX_10_EXP     4932
-# define FLT128_MAX                                    \
+#if !__GNUC_PREREQ (7, 0) && __GLIBC_USE (IEC_60559_TYPES_EXT)
+
+# if __HAVE_FLOAT128
+#  define FLT128_MANT_DIG      113
+#  define FLT128_DECIMAL_DIG   36
+#  define FLT128_DIG           33
+#  define FLT128_MIN_EXP       (-16381)
+#  define FLT128_MIN_10_EXP    (-4931)
+#  define FLT128_MAX_EXP       16384
+#  define FLT128_MAX_10_EXP    4932
+#  define FLT128_MAX                                   \
   __f128 (1.18973149535723176508575932662800702e+4932)
-# define FLT128_EPSILON                                        \
+#  define FLT128_EPSILON                               \
   __f128 (1.92592994438723585305597794258492732e-34)
-# define FLT128_MIN                                    \
+#  define FLT128_MIN                                   \
   __f128 (3.36210314311209350626267781732175260e-4932)
-# define FLT128_TRUE_MIN                               \
+#  define FLT128_TRUE_MIN                              \
   __f128 (6.47517511943802511092443895822764655e-4966)
+# endif
+
+/* Types other than _Float128 are typedefs for other types with old
+   compilers.  */
+
+# if __HAVE_FLOAT32
+#  define FLT32_MANT_DIG       FLT_MANT_DIG
+#  define FLT32_DECIMAL_DIG    FLT_DECIMAL_DIG
+#  define FLT32_DIG            FLT_DIG
+#  define FLT32_MIN_EXP                FLT_MIN_EXP
+#  define FLT32_MIN_10_EXP     FLT_MIN_10_EXP
+#  define FLT32_MAX_EXP                FLT_MAX_EXP
+#  define FLT32_MAX_10_EXP     FLT_MAX_10_EXP
+#  define FLT32_MAX            FLT_MAX
+#  define FLT32_EPSILON                FLT_EPSILON
+#  define FLT32_MIN            FLT_MIN
+#  define FLT32_TRUE_MIN       FLT_TRUE_MIN
+# endif
+
+# if __HAVE_FLOAT64
+#  define FLT64_MANT_DIG       DBL_MANT_DIG
+#  define FLT64_DECIMAL_DIG    DBL_DECIMAL_DIG
+#  define FLT64_DIG            DBL_DIG
+#  define FLT64_MIN_EXP                DBL_MIN_EXP
+#  define FLT64_MIN_10_EXP     DBL_MIN_10_EXP
+#  define FLT64_MAX_EXP                DBL_MAX_EXP
+#  define FLT64_MAX_10_EXP     DBL_MAX_10_EXP
+#  define FLT64_MAX            DBL_MAX
+#  define FLT64_EPSILON                DBL_EPSILON
+#  define FLT64_MIN            DBL_MIN
+#  define FLT64_TRUE_MIN       DBL_TRUE_MIN
+# endif
+
+# if __HAVE_FLOAT32X
+#  define FLT32X_MANT_DIG      DBL_MANT_DIG
+#  define FLT32X_DECIMAL_DIG   DBL_DECIMAL_DIG
+#  define FLT32X_DIG           DBL_DIG
+#  define FLT32X_MIN_EXP       DBL_MIN_EXP
+#  define FLT32X_MIN_10_EXP    DBL_MIN_10_EXP
+#  define FLT32X_MAX_EXP       DBL_MAX_EXP
+#  define FLT32X_MAX_10_EXP    DBL_MAX_10_EXP
+#  define FLT32X_MAX           DBL_MAX
+#  define FLT32X_EPSILON       DBL_EPSILON
+#  define FLT32X_MIN           DBL_MIN
+#  define FLT32X_TRUE_MIN      DBL_TRUE_MIN
+# endif
+
+# if __HAVE_FLOAT64X
+#  if __HAVE_FLOAT64X_LONG_DOUBLE
+#   define FLT64X_MANT_DIG     LDBL_MANT_DIG
+#   define FLT64X_DECIMAL_DIG  LDBL_DECIMAL_DIG
+#   define FLT64X_DIG          LDBL_DIG
+#   define FLT64X_MIN_EXP      LDBL_MIN_EXP
+#   define FLT64X_MIN_10_EXP   LDBL_MIN_10_EXP
+#   define FLT64X_MAX_EXP      LDBL_MAX_EXP
+#   define FLT64X_MAX_10_EXP   LDBL_MAX_10_EXP
+#   define FLT64X_MAX          LDBL_MAX
+#   define FLT64X_EPSILON      LDBL_EPSILON
+#   define FLT64X_MIN          LDBL_MIN
+#   define FLT64X_TRUE_MIN     LDBL_TRUE_MIN
+#  else
+#   define FLT64X_MANT_DIG     FLT128_MANT_DIG
+#   define FLT64X_DECIMAL_DIG  FLT128_DECIMAL_DIG
+#   define FLT64X_DIG          FLT128_DIG
+#   define FLT64X_MIN_EXP      FLT128_MIN_EXP
+#   define FLT64X_MIN_10_EXP   FLT128_MIN_10_EXP
+#   define FLT64X_MAX_EXP      FLT128_MAX_EXP
+#   define FLT64X_MAX_10_EXP   FLT128_MAX_10_EXP
+#   define FLT64X_MAX          FLT128_MAX
+#   define FLT64X_EPSILON      FLT128_EPSILON
+#   define FLT64X_MIN          FLT128_MIN
+#   define FLT64X_TRUE_MIN     FLT128_TRUE_MIN
+#  endif
+# endif
+
 #endif
 
 #endif /* _LIBC_FLOAT_H */