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PR/50646: Use the c99 cabs math builtins directly, because cabs and cabsf

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have broken ABI's can cabsl does not exist. The correct(?) probably fix is
to change the cabs builtins to point to the c99 variants directly...
XXX: pullup-7 and the same file from the gcc.old tree.
This commit is contained in:
christos 2016-01-11 16:52:53 +00:00
parent e85b730730
commit 3965f5d7b6
1 changed files with 14 additions and 3 deletions
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17
external/gpl3/gcc/dist/libstdc++-v3/include/std/complex vendored
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@ -44,6 +44,16 @@
#include <cmath>
#include <sstream>
#if _GLIBCXX_USE_C99_COMPLEX
// This is disgusting; we can't include ccomplex because that c++11
// and we can't use the builtins because those point to the wrong
// ABI-wise cabs/cabsf so we manually declare those here and use
// them directly.
extern "C" float __c99_cabsf(_Complex float);
extern "C" double __c99_cabs(_Complex double);
extern "C" long double __c99_cabsl(_Complex long double);
#endif
// Get rid of a macro possibly defined in <complex.h>
#undef complex
@ -580,15 +590,16 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
#if _GLIBCXX_USE_C99_COMPLEX
// XXX: We can't use __builtin_cabs* because they are broken
inline float
__complex_abs(__complex__ float __z) { return __builtin_cabsf(__z); }
__complex_abs(__complex__ float __z) { return __c99_cabsf(__z); }
inline double
__complex_abs(__complex__ double __z) { return __builtin_cabs(__z); }
__complex_abs(__complex__ double __z) { return __c99_cabs(__z); }
inline long double
__complex_abs(const __complex__ long double& __z)
{ return __builtin_cabsl(__z); }
{ return __c99_cabsl(__z); }
template<typename _Tp>
inline _Tp