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Rename hash_detail::float_limits => hash_detail::limits, since it's also used

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for integers in the tests.


[SVN r35559]
This commit is contained in:
Daniel James
2006-10-11 18:58:40 +00:00
parent c7778306f8
commit 585813f9fe
3 changed files with 52 additions and 52 deletions
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84
hash/test/hash_float_test.cpp
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@@ -24,12 +24,12 @@ void float_tests(char const* name, T* = 0)
std::cerr<<"\n" std::cerr<<"\n"
<<"Testing " BOOST_STRINGIZE(HASH_NAMESPACE) "::hash<"<<name<<">\n" <<"Testing " BOOST_STRINGIZE(HASH_NAMESPACE) "::hash<"<<name<<">\n"
<<"\n" <<"\n"
<<"boost::hash_detail::float_limits<T>::digits = " <<"boost::hash_detail::limits<T>::digits = "
<<boost::hash_detail::float_limits<T>::digits<<"\n" <<boost::hash_detail::limits<T>::digits<<"\n"
<<"boost::hash_detail::float_limits<int>::digits = " <<"boost::hash_detail::limits<int>::digits = "
<<boost::hash_detail::float_limits<int>::digits<<"\n" <<boost::hash_detail::limits<int>::digits<<"\n"
<<"boost::hash_detail::float_limits<std::size_t>::digits = " <<"boost::hash_detail::limits<std::size_t>::digits = "
<<boost::hash_detail::float_limits<std::size_t>::digits<<"\n" <<boost::hash_detail::limits<std::size_t>::digits<<"\n"
<<"\n" <<"\n"
; ;
@@ -50,11 +50,11 @@ void float_tests(char const* name, T* = 0)
#if defined(__BORLANDC__) #if defined(__BORLANDC__)
std::cerr<<"Not running infinity checks on Borland, as it causes it to crash.\n"; std::cerr<<"Not running infinity checks on Borland, as it causes it to crash.\n";
#else #else
if(boost::hash_detail::float_limits<T>::has_infinity) { if(boost::hash_detail::limits<T>::has_infinity) {
T infinity = -log(zero); T infinity = -log(zero);
T infinity2 = (T) 1. / zero; T infinity2 = (T) 1. / zero;
T infinity3 = (T) -1. / minus_zero; T infinity3 = (T) -1. / minus_zero;
T infinity4 = boost::hash_detail::float_limits<T>::infinity(); T infinity4 = boost::hash_detail::limits<T>::infinity();
T minus_infinity = log(zero); T minus_infinity = log(zero);
T minus_infinity2 = (T) -1. / zero; T minus_infinity2 = (T) -1. / zero;
@@ -84,26 +84,26 @@ void float_tests(char const* name, T* = 0)
// This should really be 'has_denorm == denorm_present' but some // This should really be 'has_denorm == denorm_present' but some
// compilers don't have 'denorm_present'. See also a later use. // compilers don't have 'denorm_present'. See also a later use.
if(boost::hash_detail::float_limits<T>::has_denorm) { if(boost::hash_detail::limits<T>::has_denorm) {
if(x1(boost::hash_detail::float_limits<T>::denorm_min()) == x1(infinity)) { if(x1(boost::hash_detail::limits<T>::denorm_min()) == x1(infinity)) {
std::cerr<<"x1(denorm_min) == x1(infinity) == "<<x1(infinity)<<"\n"; std::cerr<<"x1(denorm_min) == x1(infinity) == "<<x1(infinity)<<"\n";
} }
if(x1(boost::hash_detail::float_limits<T>::denorm_min()) == x1(minus_infinity)) { if(x1(boost::hash_detail::limits<T>::denorm_min()) == x1(minus_infinity)) {
std::cerr<<"x1(denorm_min) == x1(-infinity) == "<<x1(minus_infinity)<<"\n"; std::cerr<<"x1(denorm_min) == x1(-infinity) == "<<x1(minus_infinity)<<"\n";
} }
} }
if(boost::hash_detail::float_limits<T>::has_quiet_NaN) { if(boost::hash_detail::limits<T>::has_quiet_NaN) {
if(x1(boost::hash_detail::float_limits<T>::quiet_NaN()) == x1(infinity)) { if(x1(boost::hash_detail::limits<T>::quiet_NaN()) == x1(infinity)) {
std::cerr<<"x1(quiet_NaN) == x1(infinity) == "<<x1(infinity)<<"\n"; std::cerr<<"x1(quiet_NaN) == x1(infinity) == "<<x1(infinity)<<"\n";
} }
if(x1(boost::hash_detail::float_limits<T>::quiet_NaN()) == x1(minus_infinity)) { if(x1(boost::hash_detail::limits<T>::quiet_NaN()) == x1(minus_infinity)) {
std::cerr<<"x1(quiet_NaN) == x1(-infinity) == "<<x1(minus_infinity)<<"\n"; std::cerr<<"x1(quiet_NaN) == x1(-infinity) == "<<x1(minus_infinity)<<"\n";
} }
} }
} }
#endif #endif
T max = (boost::hash_detail::float_limits<T>::max)(); T max = (boost::hash_detail::limits<T>::max)();
T half_max = max / 2; T half_max = max / 2;
T quarter_max = max / 4; T quarter_max = max / 4;
T three_quarter_max = max - quarter_max; T three_quarter_max = max - quarter_max;
@@ -132,50 +132,50 @@ void float_tests(char const* name, T* = 0)
BOOST_TEST(x1(v1) == HASH_NAMESPACE::hash_value(v1)); BOOST_TEST(x1(v1) == HASH_NAMESPACE::hash_value(v1));
BOOST_TEST(x1(v2) == HASH_NAMESPACE::hash_value(v2)); BOOST_TEST(x1(v2) == HASH_NAMESPACE::hash_value(v2));
BOOST_TEST(x1(boost::hash_detail::float_limits<T>::epsilon()) == BOOST_TEST(x1(boost::hash_detail::limits<T>::epsilon()) ==
HASH_NAMESPACE::hash_value(boost::hash_detail::float_limits<T>::epsilon())); HASH_NAMESPACE::hash_value(boost::hash_detail::limits<T>::epsilon()));
BOOST_TEST(boost::hash_detail::float_limits<T>::epsilon() != (T) 0); BOOST_TEST(boost::hash_detail::limits<T>::epsilon() != (T) 0);
if(x1(boost::hash_detail::float_limits<T>::epsilon()) == x1((T) 0)) if(x1(boost::hash_detail::limits<T>::epsilon()) == x1((T) 0))
std::cerr<<"x1(epsilon) == x1(0) == "<<x1((T) 0)<<"\n"; std::cerr<<"x1(epsilon) == x1(0) == "<<x1((T) 0)<<"\n";
BOOST_TEST(-boost::hash_detail::float_limits<T>::epsilon() != (T) 0); BOOST_TEST(-boost::hash_detail::limits<T>::epsilon() != (T) 0);
if(x1(-boost::hash_detail::float_limits<T>::epsilon()) == x1((T) 0)) if(x1(-boost::hash_detail::limits<T>::epsilon()) == x1((T) 0))
std::cerr<<"x1(-epsilon) == x1(0) == "<<x1((T) 0)<<"\n"; std::cerr<<"x1(-epsilon) == x1(0) == "<<x1((T) 0)<<"\n";
BOOST_TEST((T) 1 + boost::hash_detail::float_limits<T>::epsilon() != (T) 1); BOOST_TEST((T) 1 + boost::hash_detail::limits<T>::epsilon() != (T) 1);
if(x1((T) 1 + boost::hash_detail::float_limits<T>::epsilon()) == x1((T) 1)) if(x1((T) 1 + boost::hash_detail::limits<T>::epsilon()) == x1((T) 1))
std::cerr<<"x1(1 + epsilon) == x1(1) == "<<x1((T) 1)<<"\n"; std::cerr<<"x1(1 + epsilon) == x1(1) == "<<x1((T) 1)<<"\n";
BOOST_TEST((T) 1 - boost::hash_detail::float_limits<T>::epsilon() != (T) 1); BOOST_TEST((T) 1 - boost::hash_detail::limits<T>::epsilon() != (T) 1);
if(x1((T) 1 - boost::hash_detail::float_limits<T>::epsilon()) == x1((T) 1)) if(x1((T) 1 - boost::hash_detail::limits<T>::epsilon()) == x1((T) 1))
std::cerr<<"x1(1 - epsilon) == x1(1) == "<<x1((T) 1)<<"\n"; std::cerr<<"x1(1 - epsilon) == x1(1) == "<<x1((T) 1)<<"\n";
BOOST_TEST((T) -1 + boost::hash_detail::float_limits<T>::epsilon() != (T) -1); BOOST_TEST((T) -1 + boost::hash_detail::limits<T>::epsilon() != (T) -1);
if(x1((T) -1 + boost::hash_detail::float_limits<T>::epsilon()) == x1((T) -1)) if(x1((T) -1 + boost::hash_detail::limits<T>::epsilon()) == x1((T) -1))
std::cerr<<"x1(-1 + epsilon) == x1(-1) == "<<x1((T) -1)<<"\n"; std::cerr<<"x1(-1 + epsilon) == x1(-1) == "<<x1((T) -1)<<"\n";
BOOST_TEST((T) -1 - boost::hash_detail::float_limits<T>::epsilon() != (T) -1); BOOST_TEST((T) -1 - boost::hash_detail::limits<T>::epsilon() != (T) -1);
if(x1((T) -1 - boost::hash_detail::float_limits<T>::epsilon()) == x1((T) -1)) if(x1((T) -1 - boost::hash_detail::limits<T>::epsilon()) == x1((T) -1))
std::cerr<<"x1(-1 - epsilon) == x1(-1) == "<<x1((T) -1)<<"\n"; std::cerr<<"x1(-1 - epsilon) == x1(-1) == "<<x1((T) -1)<<"\n";
// As before. // As before.
if(boost::hash_detail::float_limits<T>::has_denorm) { if(boost::hash_detail::limits<T>::has_denorm) {
if(x1(boost::hash_detail::float_limits<T>::denorm_min()) == x1(zero)) { if(x1(boost::hash_detail::limits<T>::denorm_min()) == x1(zero)) {
std::cerr<<"x1(denorm_min) == x1(zero) == "<<x1(zero)<<"\n"; std::cerr<<"x1(denorm_min) == x1(zero) == "<<x1(zero)<<"\n";
} }
#if !BOOST_WORKAROUND(__DECCXX_VER,<70190006) #if !BOOST_WORKAROUND(__DECCXX_VER,<70190006)
// The Tru64/CXX standard library prior to 7.1 contains a bug in the // The Tru64/CXX standard library prior to 7.1 contains a bug in the
// specialization of boost::hash_detail::float_limits::denorm_min() for long // specialization of boost::hash_detail::limits::denorm_min() for long
// doubles which causes this test to fail. // doubles which causes this test to fail.
if(x1(boost::hash_detail::float_limits<T>::denorm_min()) != if(x1(boost::hash_detail::limits<T>::denorm_min()) !=
HASH_NAMESPACE::hash_value(boost::hash_detail::float_limits<T>::denorm_min())) HASH_NAMESPACE::hash_value(boost::hash_detail::limits<T>::denorm_min()))
{ {
std::cerr<<"x1(boost::hash_detail::float_limits<T>::denorm_min()) = " std::cerr<<"x1(boost::hash_detail::limits<T>::denorm_min()) = "
<< x1(boost::hash_detail::float_limits<T>::denorm_min()) << x1(boost::hash_detail::limits<T>::denorm_min())
<< "\nhash_value(boost::hash_detail::float_limits<T>::denorm_min()) = " << "\nhash_value(boost::hash_detail::limits<T>::denorm_min()) = "
<< HASH_NAMESPACE::hash_value( << HASH_NAMESPACE::hash_value(
boost::hash_detail::float_limits<T>::denorm_min()) boost::hash_detail::limits<T>::denorm_min())
<< "\nx1(0) = "<<x1(0)<<"\n"; << "\nx1(0) = "<<x1(0)<<"\n";
} }
#endif #endif
@@ -183,12 +183,12 @@ void float_tests(char const* name, T* = 0)
// NaN also causes borland to crash. // NaN also causes borland to crash.
#if !defined(__BORLANDC__) #if !defined(__BORLANDC__)
if(boost::hash_detail::float_limits<T>::has_quiet_NaN) { if(boost::hash_detail::limits<T>::has_quiet_NaN) {
if(x1(boost::hash_detail::float_limits<T>::quiet_NaN()) == x1(1.0)) { if(x1(boost::hash_detail::limits<T>::quiet_NaN()) == x1(1.0)) {
std::cerr<<"x1(quiet_NaN) == x1(1.0) == "<<x1(1.0)<<"\n"; std::cerr<<"x1(quiet_NaN) == x1(1.0) == "<<x1(1.0)<<"\n";
} }
BOOST_TEST(x1(boost::hash_detail::float_limits<T>::quiet_NaN()) == BOOST_TEST(x1(boost::hash_detail::limits<T>::quiet_NaN()) ==
HASH_NAMESPACE::hash_value(boost::hash_detail::float_limits<T>::quiet_NaN())); HASH_NAMESPACE::hash_value(boost::hash_detail::limits<T>::quiet_NaN()));
} }
#endif #endif
} }

6
hash/test/hash_number_test.cpp
View File

@@ -24,7 +24,7 @@
template <class T> template <class T>
void numeric_test(T*) void numeric_test(T*)
{ {
typedef boost::hash_detail::float_limits<T> limits; typedef boost::hash_detail::limits<T> limits;
compile_time_tests((T*) 0); compile_time_tests((T*) 0);
@@ -60,7 +60,7 @@ void numeric_test(T*)
template <class T> template <class T>
void limits_test(T*) void limits_test(T*)
{ {
typedef boost::hash_detail::float_limits<T> limits; typedef boost::hash_detail::limits<T> limits;
if(limits::is_specialized) if(limits::is_specialized)
{ {
@@ -91,7 +91,7 @@ void limits_test(T*)
template <class T> template <class T>
void poor_quality_tests(T*) void poor_quality_tests(T*)
{ {
typedef boost::hash_detail::float_limits<T> limits; typedef boost::hash_detail::limits<T> limits;
HASH_NAMESPACE::hash<T> x1; HASH_NAMESPACE::hash<T> x1;
HASH_NAMESPACE::hash<T> x2; HASH_NAMESPACE::hash<T> x2;

14
include/boost/functional/detail/hash_float.hpp
View File

@@ -47,11 +47,11 @@ namespace boost
namespace hash_detail namespace hash_detail
{ {
template <class T> template <class T>
struct float_limits : std::numeric_limits<T> {}; struct limits : std::numeric_limits<T> {};
#if defined(__OpenBSD__) #if defined(__OpenBSD__)
template <> template <>
struct float_limits<long double> struct limits<long double>
: std::numeric_limits<long double> : std::numeric_limits<long double>
{ {
static long double epsilon() { static long double epsilon() {
@@ -96,19 +96,19 @@ namespace boost
//BOOST_ASSERT(0 <= v && v < 0.5); //BOOST_ASSERT(0 <= v && v < 0.5);
v = boost::hash_detail::call_ldexp(v, v = boost::hash_detail::call_ldexp(v,
float_limits<std::size_t>::digits + 1); limits<std::size_t>::digits + 1);
std::size_t seed = static_cast<std::size_t>(v); std::size_t seed = static_cast<std::size_t>(v);
v -= seed; v -= seed;
// ceiling(digits(T) * log2(radix(T))/ digits(size_t)) - 1; // ceiling(digits(T) * log2(radix(T))/ digits(size_t)) - 1;
std::size_t const length std::size_t const length
= (float_limits<T>::digits * = (limits<T>::digits *
boost::static_log2<float_limits<T>::radix>::value - 1) boost::static_log2<limits<T>::radix>::value - 1)
/ float_limits<std::size_t>::digits; / limits<std::size_t>::digits;
for(std::size_t i = 0; i < length; ++i) for(std::size_t i = 0; i < length; ++i)
{ {
v = boost::hash_detail::call_ldexp(v, float_limits<std::size_t>::digits); v = boost::hash_detail::call_ldexp(v, limits<std::size_t>::digits);
std::size_t part = static_cast<std::size_t>(v); std::size_t part = static_cast<std::size_t>(v);
v -= part; v -= part;
hash_float_combine(seed, part); hash_float_combine(seed, part);