fixed.unifiedErrorCalculator.relativeAbsoluteError

Relative absolute error of two numeric inputs

Since R2023b

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Syntax

fixed.unifiedErrorCalculator.relativeAbsoluteError(approxValue,refValue)
fixed.unifiedErrorCalculator.relativeAbsoluteError(approxValue,refValue,keepNaN)

Description

fixed.unifiedErrorCalculator.relativeAbsoluteError(approxValue,refValue) returns the relative absolute error between the approximate value approxValue and the reference value refValue given by abs(refValue-approxValue)/abs(refValue).

example

fixed.unifiedErrorCalculator.relativeAbsoluteError(approxValue,refValue,keepNaN) specifies whether to keep the calculated error as NaN. By default, to indicate the calculated error is significant, the function returns Inf if the calculated error is NaN.

Examples

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Use the fixed.unifiedErrorCalculator.relativeAbsoluteError function to compute the relative absolute error between a set of numerical values in double precision and the same set of values quantized to the int8 data type.

refValue = [-129 -128.5 -1.863 0 0.499 125.5 200];
approxValue = int8(refValue);
y = fixed.unifiedErrorCalculator.relativeAbsoluteError(approxValue,refValue)
y =

    0.0078    0.0039    0.0735         0    1.0000    0.0040    0.3650

Input Arguments

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Approximate or quantized value, specified as a scalar, vector, matrix, or multidimensional array. The input arguments approxValue and refValue must be real-valued and have the same size.

Data Types: half | single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fi

Reference, ideal, or actual value to compare against, specified as a scalar, vector, matrix, or multidimensional array. The input arguments refValue and approxValue must be real-valued and have the same size.

Data Types: half | single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | fi

Whether to keep NaN results, specified as one of these values:

  • false or 0 — If the calculated error is NaN, return Inf to indicate that the calculated error is significant.

  • true or 1 — If the calculated error is NaN, return NaN.

Version History

Introduced in R2023b

See Also

Apps

Functions