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brush up convertFp16

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* raise an error when wrong bit depth passed
  * raise an build error when wrong depth is specified for cvtScaleHalf_
  * remove unnecessary safe check in cvtScaleHalf_
  * use intrinsic instead of direct pointer access
  * update the explanation
This commit is contained in:
Tomoaki Teshima
2016-08-03 16:53:52 +09:00
committed by Tomoaki Teshima
parent da2810918c
commit 87ca607fd4
2 changed files with 18 additions and 25 deletions
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modules/core/include/opencv2/core.hpp
+3 -2
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@@ -526,8 +526,9 @@ CV_EXPORTS_W void convertScaleAbs(InputArray src, OutputArray dst,
/** @brief Converts an array to half precision floating number.
convertFp16 converts FP32 to FP16 or FP16 to FP32. The input array has to have type of CV_32F or
CV_16S to represent the bit depth. If the input array is neither of them, it'll do nothing.
This function converts FP32 (single precision floating point) from/to FP16 (half precision floating point). The input array has to have type of CV_32F or
CV_16S to represent the bit depth. If the input array is neither of them, the function will raise an error.
The format of half precision floating point is defined in IEEE 754-2008.
@param src input array.
@param dst output array.