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the random source is still 64 bits

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This commit is contained in:
Li-Ta Lo 2020-06-17 12:58:03 -06:00
parent cc3061bab1
commit 5b0e309b95
1 changed files with 2 additions and 2 deletions
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4
vtkm/cont/ArrayHandleRandomUniformReal.h
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@ -40,13 +40,13 @@ struct CanonicalFunctor<vtkm::Float64>
template <>
struct CanonicalFunctor<vtkm::Float32>
{
// We take 24 bits (number of bits in mantissa in a double) from the 32 bits random source
// We take 24 bits (number of bits in mantissa in a double) from the 64 bits random source
// and divide it by (1 << 24).
static constexpr vtkm::Float32 DIVISOR = static_cast<vtkm::Float32>(vtkm::UInt32{ 1 } << 24);
static constexpr vtkm::UInt32 MASK = (vtkm::UInt32{ 1 } << 24) - vtkm::UInt32{ 1 };
VTKM_EXEC_CONT
vtkm::Float32 operator()(vtkm::UInt32 bits) const { return (bits & MASK) / DIVISOR; }
vtkm::Float32 operator()(vtkm::UInt64 bits) const { return (bits & MASK) / DIVISOR; }
};
} // detail