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core: divUp function

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This commit is contained in:
Alexander Alekhin 2017-08-03 11:57:45 +03:00
parent 2e608b1c97
commit 9ca39821c8
3 changed files with 17 additions and 10 deletions
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17
modules/core/include/opencv2/core/utility.hpp
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@ -444,6 +444,23 @@ static inline size_t alignSize(size_t sz, int n)
return (sz + n-1) & -n;
}
/** @brief Integer division with result round up.
Use this function instead of `ceil((float)a / b)` expressions.
@sa alignSize
*/
static inline int divUp(int a, unsigned int b)
{
CV_DbgAssert(a >= 0);
return (a + b - 1) / b;
}
/** @overload */
static inline size_t divUp(size_t a, unsigned int b)
{
return (a + b - 1) / b;
}
/** @brief Enables or disables the optimized code.
The function can be used to dynamically turn on and off optimized code (code that uses SSE2, AVX,

5
modules/core/src/matrix.cpp
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@ -3406,11 +3406,6 @@ static TransposeInplaceFunc transposeInplaceTab[] =
#ifdef HAVE_OPENCL
static inline int divUp(int a, int b)
{
return (a + b - 1) / b;
}
static bool ocl_transpose( InputArray _src, OutputArray _dst )
{
const ocl::Device & dev = ocl::Device::getDefault();

5
modules/photo/src/fast_nlmeans_denoising_opencl.hpp
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@ -23,11 +23,6 @@ enum
CTA_SIZE_DEFAULT = 256
};
static int divUp(int a, int b)
{
return (a + b - 1) / b;
}
template <typename FT, typename ST, typename WT>
static bool ocl_calcAlmostDist2Weight(UMat & almostDist2Weight,
int searchWindowSize, int templateWindowSize,