[libcxx-commits] [libcxx] r369429 - [libc++] Avoid implicit conversion warning in a <random> test
Louis Dionne via libcxx-commits
libcxx-commits at lists.llvm.org
Tue Aug 20 12:28:27 PDT 2019
Author: ldionne
Date: Tue Aug 20 12:28:26 2019
New Revision: 369429
URL: http://llvm.org/viewvc/llvm-project?rev=369429&view=rev
Log:
[libc++] Avoid implicit conversion warning in a <random> test
By stashing the computation of `E::max() - E::min()` in a variable, we
avoid the warning introduced in r367497. Note that we use `auto` to
avoid having to deduce the type of the computation, which is not a
problem since Clang provides `auto` as an extension even in C++03 (and
we disable warnings related to using C++11 extensions in the test suite).
Modified:
libcxx/trunk/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp
Modified: libcxx/trunk/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp?rev=369429&r1=369428&r2=369429&view=diff
==============================================================================
--- libcxx/trunk/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp (original)
+++ libcxx/trunk/test/std/numerics/rand/rand.util/rand.util.canonical/generate_canonical.pass.cpp Tue Aug 20 12:28:26 2019
@@ -19,85 +19,78 @@
int main(int, char**)
{
+ typedef std::minstd_rand0 E;
+ auto range = E::max() - E::min();
+
{
- typedef std::minstd_rand0 E;
typedef float F;
E r;
F f = std::generate_canonical<F, 0>(r);
- assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + F(1))));
}
{
- typedef std::minstd_rand0 E;
typedef float F;
E r;
F f = std::generate_canonical<F, 1>(r);
- assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + 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 == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + 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 == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + 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 == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + F(1))));
}
{
- typedef std::minstd_rand0 E;
typedef double F;
E r;
F f = std::generate_canonical<F, 0>(r);
- assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + F(1))));
}
{
- typedef std::minstd_rand0 E;
typedef double F;
E r;
F f = std::generate_canonical<F, 1>(r);
- assert(f == truncate_fp((16807 - E::min()) / (E::max() - E::min() + F(1))));
+ assert(f == truncate_fp((16807 - E::min()) / (range + 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 == 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)))));
+ (282475249 - E::min()) * (range + F(1))) /
+ ((range + F(1)) * (range + 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 == 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)))));
+ (282475249 - E::min()) * (range + F(1))) /
+ ((range + F(1)) * (range + 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 == 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)))));
+ (282475249 - E::min()) * (range + F(1))) /
+ ((range + F(1)) * (range + F(1)))));
}
return 0;
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