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Partial math function support in in the hemi:: namespace and some tests #10

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Added a tests folder for the math function support. There's a failing assert on the device for double-precision round() (internal function), at least for the case of 0^1 = 0.

Everything's defined as a inline function and should be usable just as their std:: counterparts. It also selects the single-precision versions when the input arguments are floats. We could probably improve on this behavior, but it'd probably need a global flipped in the hemi namespace or something similar.

I've tested it with CUDA 6 and g++ 4.8.

… the appropriate single or double-precision

function.

Switching is done based on HEMI_DEV_CODE preprocessor statement.
…m brev.

Unsure if fma actually works or is just a infinite loop trap on host.
compilers.

Changed test makefile to look like examples'
Started test harness for math.h functions in hemi. Double-precision round() on the device is not passing an assert.
@harrism
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harrism commented Jul 24, 2014

Please make some changes.

  1. Indents should be 2 spaces, not tabs, as in hemi.h
  2. { and } get their own lines
  3. Use .cpp extension for C++ source files, not .cc


// templated POW function. For a CUDA device, it casts the arguments to double.
// For a host, it defaults to std::pow in <cmath>
template <class T>
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Indent 2 spaces, not 1 tab.

Moved { } to their own lines.
Removed hemi::fma for now, no c++11 support in nvcc (at least experimentally the compiler is choking on STL).
@lordofhyphens
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Submitting a new pull request.

@lordofhyphens lordofhyphens reopened this Jul 25, 2014
@lordofhyphens
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Github is confusing. Sorry for the extra noise.

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