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Fix FP comparisons when SSE isn't available

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@349387 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2018-12-17 20:17:43 +00:00
parent 4b8645f0dc
commit dfa283e2cf
5 changed files with 66 additions and 30 deletions
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28
test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp
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@@ -15,6 +15,8 @@
#include <random>
#include <cassert>
#include "truncate_fp.h"
int main()
{
{
@@ -22,35 +24,35 @@ int main()
typedef float F;
E r;
F f = std::generate_canonical<F, 0>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
typedef std::minstd_rand0 E;
typedef float F;
E r;
F f = std::generate_canonical<F, 1>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
typedef std::minstd_rand0 E;
typedef float F;
E r;
F f = std::generate_canonical<F, std::numeric_limits<F>::digits - 1>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
typedef std::minstd_rand0 E;
typedef float F;
E r;
F f = std::generate_canonical<F, std::numeric_limits<F>::digits>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
typedef std::minstd_rand0 E;
typedef float F;
E r;
F f = std::generate_canonical<F, std::numeric_limits<F>::digits + 1>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
@@ -58,43 +60,43 @@ int main()
typedef double F;
E r;
F f = std::generate_canonical<F, 0>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
typedef std::minstd_rand0 E;
typedef double F;
E r;
F f = std::generate_canonical<F, 1>(r);
assert(f == (16807 - E::min()) / (E::max() - E::min() + F(1)));
assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
}
{
typedef std::minstd_rand0 E;
typedef double F;
E r;
F f = std::generate_canonical<F, std::numeric_limits<F>::digits - 1>(r);
assert(f ==
assert(f == truncate_fp(
(16807 - E::min() +
(282475249 - E::min()) * (E::max() - E::min() + F(1))) /
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1))));
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1)))));
}
{
typedef std::minstd_rand0 E;
typedef double F;
E r;
F f = std::generate_canonical<F, std::numeric_limits<F>::digits>(r);
assert(f ==
assert(f == truncate_fp(
(16807 - E::min() +
(282475249 - E::min()) * (E::max() - E::min() + F(1))) /
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1))));
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1)))));
}
{
typedef std::minstd_rand0 E;
typedef double F;
E r;
F f = std::generate_canonical<F, std::numeric_limits<F>::digits + 1>(r);
assert(f ==
assert(f == truncate_fp(
(16807 - E::min() +
(282475249 - E::min()) * (E::max() - E::min() + F(1))) /
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1))));
((E::max() - E::min() + F(1)) * (E::max() - E::min() + F(1)))));
}
}