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Test for hashing 1+epsilon, following recent boost-dev comments on Darwin

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gcc-4.0's long double.


[SVN r31907]
This commit is contained in:
Daniel James
2005-12-04 20:02:08 +00:00
parent 906b14102d
commit 1ec297d8d4
1 changed files with 18 additions and 3 deletions
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21
test/hash_float_test.cpp
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@@ -23,8 +23,16 @@ template <class T>
void float_tests(char const* name, T* = 0)
{
std::cout<<"\n"
"Testing " BOOST_STRINGIZE(HASH_NAMESPACE) "::hash<"<<name<<">\n"
"\n";
<<"Testing " BOOST_STRINGIZE(HASH_NAMESPACE) "::hash<"<<name<<">\n"
<<"\n"
<<"std::numeric_limits<T>::digits = "
<<std::numeric_limits<T>::digits<<"\n"
<<"std::numeric_limits<int>::digits = "
<<std::numeric_limits<int>::digits<<"\n"
<<"std::numeric_limits<std::size_t>::digits = "
<<std::numeric_limits<std::size_t>::digits<<"\n"
<<"\n"
;
HASH_NAMESPACE::hash<T> x1;
@@ -126,10 +134,17 @@ void float_tests(char const* name, T* = 0)
BOOST_CHECK(x1(v1) == HASH_NAMESPACE::hash_value(v1));
BOOST_CHECK(x1(v2) == HASH_NAMESPACE::hash_value(v2));
BOOST_CHECK(x1(std::numeric_limits<T>::epsilon()) != x1((T) 0));
BOOST_CHECK(x1(std::numeric_limits<T>::epsilon()) ==
HASH_NAMESPACE::hash_value(std::numeric_limits<T>::epsilon()));
BOOST_CHECK(x1(std::numeric_limits<T>::epsilon()) != x1((T) 0));
if(x1(std::numeric_limits<T>::epsilon()) == x1((T)0))
std::cout<<"x1(epsilon) == x1(0) == "<<x1(std::numeric_limits<T>::epsilon())<<"\n";
BOOST_CHECK(x1(std::numeric_limits<T>::epsilon()) != x1((T) 1));
if(x1(std::numeric_limits<T>::epsilon()) == x1((T)1))
std::cout<<"x1(epsilon) == x1(1) == "<<x1(std::numeric_limits<T>::epsilon())<<"\n";
// As before.
if(std::numeric_limits<T>::has_denorm) {
if(x1(std::numeric_limits<T>::denorm_min()) == x1(zero)) {