Prefer https to http for gnu.org and fsf.org URLs

[thirdparty/glibc.git] / bits / floatn-common.h

diff --git a/bits/floatn-common.h b/bits/floatn-common.h
index 4d38a910fc44ffc155569d1f4c4a02e10ef3fe35..985afbb994ccdcd510232efa24b215fa04ffe864 100644 (file)
--- a/bits/floatn-common.h
+++ b/bits/floatn-common.h
@@ -1,6 +1,6 @@
 /* Macros to control TS 18661-3 glibc features where the same
    definitions are appropriate for all platforms.
-   Copyright (C) 2017 Free Software Foundation, Inc.
+   Copyright (C) 2017-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -15,12 +15,13 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #ifndef _BITS_FLOATN_COMMON_H
 #define _BITS_FLOATN_COMMON_H
 
 #include <features.h>
+#include <bits/long-double.h>
 
 /* This header should be included at the bottom of each bits/floatn.h.
    It defines the following macros for each _FloatN and _FloatNx type,
@@ -31,9 +32,9 @@
    floating-point type with the right format for this type, and this
    glibc includes corresponding *fN or *fNx interfaces for it.  */
 #define __HAVE_FLOAT16 0
-#define __HAVE_FLOAT32 0
-#define __HAVE_FLOAT64 0
-#define __HAVE_FLOAT32X 0
+#define __HAVE_FLOAT32 1
+#define __HAVE_FLOAT64 1
+#define __HAVE_FLOAT32X 1
 #define __HAVE_FLOAT128X 0
 
 /* Defined to 1 if the corresponding __HAVE_<type> macro is 1 and the
@@ -55,6 +56,13 @@
 #define __HAVE_DISTINCT_FLOAT64X 0
 #define __HAVE_DISTINCT_FLOAT128X __HAVE_FLOAT128X
 
+/* Defined to 1 if the corresponding _FloatN type is not binary compatible
+   with the corresponding ISO C type in the current compilation unit as
+   opposed to __HAVE_DISTINCT_FLOATN, which indicates the default types built
+   in glibc.  */
+#define __HAVE_FLOAT128_UNLIKE_LDBL (__HAVE_DISTINCT_FLOAT128  \
+                                    && __LDBL_MANT_DIG__ != 113)
+
 /* Defined to 1 if any _FloatN or _FloatNx types that are not
    ABI-distinct are however distinct types at the C language level (so
    for the purposes of __builtin_types_compatible_p and _Generic).  */
@@ -88,7 +96,11 @@
 
 # if __HAVE_FLOAT64
 #  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
-#   define __f64(x) x
+#   ifdef __NO_LONG_DOUBLE_MATH
+#    define __f64(x) x##l
+#   else
+#    define __f64(x) x
+#   endif
 #  else
 #   define __f64(x) x##f64
 #  endif
@@ -142,7 +154,11 @@ typedef _Complex float __cfloat16 __attribute__ ((__mode__ (__HC__)));
 
 # if __HAVE_FLOAT64
 #  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
-#   define __CFLOAT64 _Complex double
+#   ifdef __NO_LONG_DOUBLE_MATH
+#    define __CFLOAT64 _Complex long double
+#   else
+#    define __CFLOAT64 _Complex double
+#   endif
 #  else
 #   define __CFLOAT64 _Complex _Float64
 #  endif
@@ -209,15 +225,39 @@ typedef float _Float32;
 
 # if __HAVE_FLOAT64
 
-#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+/* If double, long double and _Float64 all have the same set of
+   values, TS 18661-3 requires the usual arithmetic conversions on
+   long double and _Float64 to produce _Float64.  For this to be the
+   case when building with a compiler without a distinct _Float64
+   type, _Float64 must be a typedef for long double, not for
+   double.  */
+
+#  ifdef __NO_LONG_DOUBLE_MATH
+
+#   if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef long double _Float64;
+#   endif
+
+#   if !__GNUC_PREREQ (7, 0)
+#    define __builtin_huge_valf64() (__builtin_huge_vall ())
+#    define __builtin_inff64() (__builtin_infl ())
+#    define __builtin_nanf64(x) (__builtin_nanl (x))
+#    define __builtin_nansf64(x) (__builtin_nansl (x))
+#   endif
+
+#  else
+
+#   if !__GNUC_PREREQ (7, 0) || defined __cplusplus
 typedef double _Float64;
-#  endif
+#   endif
+
+#   if !__GNUC_PREREQ (7, 0)
+#    define __builtin_huge_valf64() (__builtin_huge_val ())
+#    define __builtin_inff64() (__builtin_inf ())
+#    define __builtin_nanf64(x) (__builtin_nan (x))
+#    define __builtin_nansf64(x) (__builtin_nans (x))
+#   endif
 
-#  if !__GNUC_PREREQ (7, 0)
-#   define __builtin_huge_valf64() (__builtin_huge_val ())
-#   define __builtin_inff64() (__builtin_inf ())
-#   define __builtin_nanf64(x) (__builtin_nan (x))
-#   define __builtin_nansf64(x) (__builtin_nans (x))
 #  endif
 
 # endif