From: Eric Fiselier <eric@efcs.ca>
Date: Wed, 18 Mar 2015 15:24:18 +0000 (+0000)
Subject: Provide std::abs(<floating-point>) in <cmath> on Solaris.
X-Git-Tag: llvmorg-3.7.0-rc1~8896
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b2c276e4480d9a26b679a59321bdd8fd449e97db;p=platform%2Fupstream%2Fllvm.git

Provide std::abs(<floating-point>) in <cmath> on Solaris.

1) <cstdlib> header should define std::abs([int|long|long long])
functions. They use "using ::abs" to import these functions (which are
declared in <stdlib.h>) into std namespace.
2) <cmath> header should define std::abs([float|double|long double])
function. If we try define new functions in std namespace, then it
will cause compile error in <cstdlib> because "using ::abs" will try
import not only [int|long|long long] functions, but also
[float|double|long double] which are defined in <math.h> header on
solaris.

Patch by C Bergstrom.

llvm-svn: 232641
---

diff --git a/libcxx/include/cmath b/libcxx/include/cmath
index b340b4d..5f9aaed 100644
--- a/libcxx/include/cmath
+++ b/libcxx/include/cmath
@@ -654,6 +654,10 @@ using ::double_t;
 
 // abs
 
+#if defined(__sun__)
+using ::abs;
+#endif
+
 #if !defined(_AIX) && !defined(__sun__)
 inline _LIBCPP_INLINE_VISIBILITY
 float