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8 Commits

Author SHA1 Message Date
Louis Dionne c2d95792d6 [clang] Only provide C11 features in <float.h> starting with C++17 
Summary:
In r353970, I enabled those features in C++11 and above. To be strictly
conforming, those features should only be enabled in C++17 and above.

Reviewers: jfb, eli.friedman

Subscribers: jkorous, dexonsmith, libcxx-commits

Differential Revision: https://reviews.llvm.org/D58289

llvm-svn: 354691
 2019-02-22 20:48:54 +00:00
Louis Dionne defa9f8f85 [clang] Make sure C99/C11 features in <float.h> are provided in C++11 
Summary:
Previously, those #defines were only provided in C or when GNU extensions were
enabled. We need those #defines in C++11 and above, too.

Reviewers: jfb, eli.friedman

Subscribers: jkorous, dexonsmith, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58149

llvm-svn: 353970
 2019-02-13 19:08:01 +00:00
Pirama Arumuga Nainar 3c1a7bc290 [Headers] Define *_HAS_SUBNORM for FLT, DBL, LDBL 
Summary:
These macros are defined in the C11 standard and can be defined based on
the __*_HAS_DENORM__ default macros.

Reviewers: bruno, rsmith, doug.gregor

Subscribers: llvm-commits, enh, srhines

Differential Revision: https://reviews.llvm.org/D37302

llvm-svn: 339284
 2018-08-08 20:38:38 +00:00
Hubert Tong 1478701115 test/Headers/float.c: fix theoretical edge values 
For *_MANT_DIG, *_MAX_EXP and *_MIN_EXP, the C Standard does not list
the least requirements directly. This patch adjusts the test values with
refined ones.

Patch by Jorge Teixeira!

llvm-svn: 260710
 2016-02-12 19:24:36 +00:00
Richard Smith 66a7385e27 <float.h>: do not define DECIMAL_DIG in -std=c89 mode; this macro was added in C99. 
Patch by Jorge Teixeira!

llvm-svn: 260639
 2016-02-12 01:15:33 +00:00
Richard Smith 36983ccace Remove bogus check that larger floating point types have smaller minimum 
normalized exponents. That's not true for double versus double double.

llvm-svn: 260610
 2016-02-11 22:18:10 +00:00
Richard Smith 4539f2278f XFAIL this test for PPC64 for now. It looks like the *_MIN_EXP macros are in fact defined incorrectly for that target. 
llvm-svn: 260583
 2016-02-11 20:36:47 +00:00
Richard Smith b473e1e473 In C11, provide macros FLT_DECIMAL_DIG, DBL_DECIMAL_DIG, and LDBL_DECIMAL_DIG in <float.h>. 
Patch by Jorge Teixeira!

llvm-svn: 260577
 2016-02-11 19:57:37 +00:00