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Fix new testcase to not require std::copysign

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Use __builtin_copysign{,f,l} when std::copysign isn't available.

	PR libstdc++/61761
	* testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
	std::copysign.

From-SVN: r270859
This commit is contained in:
Jonathan Wakely 2019-05-03 20:25:05 +01:00 committed by Jonathan Wakely
parent 56e5b093de
commit e339291fc1
2 changed files with 22 additions and 2 deletions
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4
libstdc++-v3/ChangeLog
View File

@ -1,5 +1,9 @@
2019-05-03 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/61761
* testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
std::copysign.
PR libstdc++/52119
* include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
overflow warning with -Wpedantic -Wsystem-headers.

20
libstdc++-v3/testsuite/26_numerics/complex/proj.cc
View File

@ -21,6 +21,22 @@
#include <limits>
#include <testsuite_hooks.h>
namespace test
{
#ifdef _GLIBCXX_USE_C99_MATH_TR1
using std::copysign;
#else
bool copysign(float x, float y)
{ return __builtin_copysignf(x, y); }
bool copysign(double x, double y)
{ return __builtin_copysign(x, y); }
bool copysign(long double x, long double y)
{ return __builtin_copysignl(x, y); }
#endif
}
template<typename T>
bool eq(const std::complex<T>& x, const std::complex<T>& y)
{
@ -28,9 +44,9 @@ bool eq(const std::complex<T>& x, const std::complex<T>& y)
bool nan_imags = std::isnan(x.imag()) && std::isnan(y.imag());
bool sign_reals
= std::copysign(T(1), x.real()) == std::copysign(T(1), y.real());
= test::copysign(T(1), x.real()) == test::copysign(T(1), y.real());
bool sign_imags
= std::copysign(T(1), x.imag()) == std::copysign(T(1), y.imag());
= test::copysign(T(1), x.imag()) == test::copysign(T(1), y.imag());
return ((x.real() == y.real() && sign_reals) || nan_reals)
&& ((x.imag() == y.imag() && sign_imags) || nan_imags);