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Update cv::log documentation

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This commit is contained in:
Vladislav Sovrasov 2016-07-05 17:28:53 +03:00
parent 22682f933a
commit a2ec23c112
1 changed files with 4 additions and 7 deletions
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11
modules/core/include/opencv2/core.hpp
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@ -1433,14 +1433,11 @@ CV_EXPORTS_W void exp(InputArray src, OutputArray dst);
/** @brief Calculates the natural logarithm of every array element.
The function log calculates the natural logarithm of the absolute value
of every element of the input array:
\f[\texttt{dst} (I) = \fork{\log |\texttt{src}(I)|}{if \(\texttt{src}(I) \ne 0\) }{\texttt{C}}{otherwise}\f]
The function log calculates the natural logarithm of every element of the input array:
\f[\texttt{dst} (I) = \log (\texttt{src}(I)) \f]
Output on zero, negative and special (NaN, Inf) values is undefined.
where C is a large negative number (about -700 in the current
implementation). The maximum relative error is about 7e-6 for
single-precision input and less than 1e-10 for double-precision input.
Special values (NaN, Inf) are not handled.
@param src input array.
@param dst output array of the same size and type as src .
@sa exp, cartToPolar, polarToCart, phase, pow, sqrt, magnitude