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our standard library.
Summary:
Currently we declare our inline __device__ math functions in namespace
std. But libstdc++ and libc++ declare these functions in an inline
namespace inside namespace std. We need to match this because, in a
later patch, we want to get e.g. <complex> to use our device overloads,
and it only will if those overloads are in the right inline namespace.
Reviewers: tra
Subscribers: cfe-commits, jhen
Differential Revision: https://reviews.llvm.org/D24977
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@283678 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
A bunch of related changes here to our CUDA math headers.
- The second arg to nexttoward is a double (well, technically, long
double, but we don't have that), not a float.
- Add a forward-declare of llround(float), which is defined in the CUDA
headers. We need this for the same reason we need most of the other
forward-declares: To prevent a constexpr function in our standard
library from becoming host+device.
- Add nexttowardf implementation.
- Pull "foobarf" functions defined by the CUDA headers in the global
namespace into namespace std. This lets you do e.g. std::sinf.
- Add overloads for math functions accepting integer types. This lets
you do e.g. std::sin(0) without having an ambiguity between the
overload that takes a float and the one that takes a double.
With these changes, we pass testcases derived from libc++ for cmath and
math.h. We can check these testcases in to the test-suite once support
for CUDA lands there.
Reviewers: tra
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D23627
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@279140 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
See comments in patch; we were assuming that some stdlib math functions
would be defined in namespace std, when in fact the spec says they
should be defined in the global namespace. libstdc++4.9 became more
conforming and broke us.
This new implementation seems to cover the known knowns.
Reviewers: rsmith
Subscribers: cfe-commits, tra
Differential Revision: http://reviews.llvm.org/D18882
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@265751 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This is necessary for a future patch which will make all constexpr
functions implicitly host+device. cmath may declare constexpr
functions, but these we do *not* want to be host+device. The forward
declares added in this patch prevent this (because the rule will be,
constexpr functions become implicitly host+device unless they're
preceeded by a decl with __device__).
Reviewers: tra
Subscribers: cfe-commits, rnk, rsmith
Differential Revision: http://reviews.llvm.org/D18539
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264963 91177308-0d34-0410-b5e6-96231b3b80d8
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