GNU C Library master sources branch master updated. glibc-2.26.9000-593-g13c9269

[jsm28 at sourceware dot org]

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- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=13c92696d2f66e94e4f04248550cc2b8f283bfd0

commit 13c92696d2f66e94e4f04248550cc2b8f283bfd0
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Tue Oct 17 20:16:01 2017 +0000

    Use __f128 to define FLT128_* constants in include/float.h for old GCC.
    
    When using compilers before GCC 7, include/float.h provides fallback
    definitions of FLT128_* constants.  These definitions use 'Q' constant
    suffixes, which works for configurations with _Float128 ABI-distinct
    from long double, but not where it has the same ABI as long double.
    This patch changes the definitions to use the __f128 macro from
    <bits/floatn.h>, so allowing them to work in the non-distinct
    _Float128 case (where they are used in building glibc tests, not for
    building glibc itself) as well.
    
    Tested (a) with build-many-glibcs.py with GCC 6 (installed stripped
    shared libraries unchanged by the patch); (b) with
    build-many-glibcs.py with GCC 6 together with the main patch to enable
    float128 aliases; (c) for x86_64 with both GCC 6 and GCC 7.
    
    	* include/float.h [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 &&
    	__GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_MAX): Define using
    	__f128.
    	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
    	(IEC_60559_TYPES_EXT)] (FLT128_EPSILON): Likewise.
    	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
    	(IEC_60559_TYPES_EXT)] (FLT128_MIN): Likewise.
    	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
    	(IEC_60559_TYPES_EXT)] (FLT128_TRUE_MIN): Likewise.

diff --git a/ChangeLog b/ChangeLog
index ed64155..f9ca538 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2017-10-17  Joseph Myers  <joseph@codesourcery.com>
+
+	* include/float.h [!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 &&
+	__GLIBC_USE (IEC_60559_TYPES_EXT)] (FLT128_MAX): Define using
+	__f128.
+	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
+	(IEC_60559_TYPES_EXT)] (FLT128_EPSILON): Likewise.
+	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
+	(IEC_60559_TYPES_EXT)] (FLT128_MIN): Likewise.
+	[!__GNUC_PREREQ (7, 0) && __HAVE_FLOAT128 && __GLIBC_USE
+	(IEC_60559_TYPES_EXT)] (FLT128_TRUE_MIN): Likewise.
+
 2017-10-17  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	* bits/uio-ext.h (RWF_HIPRI, RWF_DSYNC, RWF_SYNC, RWF_NOWAIT): New
diff --git a/include/float.h b/include/float.h
index 736868f..939c83d 100644
--- a/include/float.h
+++ b/include/float.h
@@ -24,10 +24,14 @@
 # define FLT128_MIN_10_EXP	(-4931)
 # define FLT128_MAX_EXP		16384
 # define FLT128_MAX_10_EXP	4932
-# define FLT128_MAX		1.18973149535723176508575932662800702e+4932Q
-# define FLT128_EPSILON		1.92592994438723585305597794258492732e-34Q
-# define FLT128_MIN		3.36210314311209350626267781732175260e-4932Q
-# define FLT128_TRUE_MIN	6.47517511943802511092443895822764655e-4966Q
+# define FLT128_MAX					\
+  __f128 (1.18973149535723176508575932662800702e+4932)
+# define FLT128_EPSILON					\
+  __f128 (1.92592994438723585305597794258492732e-34)
+# define FLT128_MIN					\
+  __f128 (3.36210314311209350626267781732175260e-4932)
+# define FLT128_TRUE_MIN				\
+  __f128 (6.47517511943802511092443895822764655e-4966)
 #endif
 
 #endif /* _LIBC_FLOAT_H */

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog       |   12 ++++++++++++
 include/float.h |   12 ++++++++----
 2 files changed, 20 insertions(+), 4 deletions(-)


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