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numeric_limits.cc (test_extrema<long double>): Add specialization for FreeBSD systems only to avoid losing test only due to...

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* testsuite/18_support/numeric_limits.cc (test_extrema<long double>):
	Add specialization for FreeBSD systems only to avoid losing test
	only due to extra precision unmentioned in system headers.

From-SVN: r48997
This commit is contained in:
Loren J. Rittle 2002-01-18 22:07:27 +00:00 committed by Loren J. Rittle
parent d7af7a9ace
commit 46827fdd40
2 changed files with 31 additions and 0 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2002-01-18 Loren Rittle <ljrittle@acm.org>
* testsuite/18_support/numeric_limits.cc (test_extrema<long double>):
Add specialization for FreeBSD systems only to avoid losing test
only due to extra precision unmentioned in system headers.
2002-01-18 David Billinghurst <David.Billinghurst@riotinto.com>
* config/os/irix/irix6.5/bits/ctype_noninline.h: Fix typo

25
libstdc++-v3/testsuite/18_support/numeric_limits.cc
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@ -59,6 +59,31 @@ void test_extrema()
VERIFY( extrema<T>::max == std::numeric_limits<T>::max() );
}
#ifdef __FreeBSD__
// This specialization allows the extra precision unmentioned
// in system headers yet supported by long double on FreeBSD to
// not cause a gratuitous FAIL for the entire test. Using this
// technique to compare the residual against epsilon ensures that
// any major breakage will still be detected (although obviously not
// as tight as the exact equality check that would have been generated
// by default). This replacement test is allowable by the fact that
// C++ limits should match the system provided limits for C even if
// they were wrong verses the actual FP hardware.
template<>
void test_extrema<long double>()
{
typedef long double T;
VERIFY( (extrema<T>::min - std::numeric_limits<T>::min())
< std::numeric_limits<T>::epsilon() );
VERIFY( (std::numeric_limits<T>::min() - extrema<T>::min)
< std::numeric_limits<T>::epsilon() );
VERIFY( (extrema<T>::max / std::numeric_limits<T>::max())
< (1 + std::numeric_limits<T>::epsilon()) );
VERIFY( (std::numeric_limits<T>::max() / extrema<T>::max)
< (1 + std::numeric_limits<T>::epsilon()) );
}
#endif
#ifdef __CHAR_UNSIGNED__
#define char_is_signed false
#else