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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; 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. /** @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, 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 #ifdef HAVE_OPENCL
static inline int divUp(int a, int b)
{
return (a + b - 1) / b;
}
static bool ocl_transpose( InputArray _src, OutputArray _dst ) static bool ocl_transpose( InputArray _src, OutputArray _dst )
{ {
const ocl::Device & dev = ocl::Device::getDefault(); 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 CTA_SIZE_DEFAULT = 256
}; };
static int divUp(int a, int b)
{
return (a + b - 1) / b;
}
template <typename FT, typename ST, typename WT> template <typename FT, typename ST, typename WT>
static bool ocl_calcAlmostDist2Weight(UMat & almostDist2Weight, static bool ocl_calcAlmostDist2Weight(UMat & almostDist2Weight,
int searchWindowSize, int templateWindowSize, int searchWindowSize, int templateWindowSize,