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. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@232641 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/cmath b/include/cmath index b340b4d..5f9aaed 100644 --- a/include/cmath +++ b/include/cmath 
@@ -654,6 +654,10 @@    // abs   +#if defined(__sun__) +using ::abs; +#endif +  #if !defined(_AIX) && !defined(__sun__)  inline _LIBCPP_INLINE_VISIBILITY  float