From a2ec23c11225f8f2f11b2f4c4fef05294f124f34 Mon Sep 17 00:00:00 2001
From: Vladislav Sovrasov <vladislav.sovrasov@itseez.com>
Date: Tue, 5 Jul 2016 17:28:53 +0300
Subject: [PATCH] Update cv::log documentation
---
modules/core/include/opencv2/core.hpp | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/modules/core/include/opencv2/core.hpp b/modules/core/include/opencv2/core.hpp
index 906c4d2aa8..d875ce2d76 100644
--- a/modules/core/include/opencv2/core.hpp
+++ b/modules/core/include/opencv2/core.hpp
@@ -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