TTS_ULP_RANGE_CHECK

#define TTS_ULP_RANGE_CHECK	(		Producer,
			RefType,
			NewType,
			RefFunc,
			NewFunc,
			Ulpmax
	)

Generate a range based test between two functions.

Evaluates the histogram of ULP difference between two functions run on the same data set and that they lie in a given ULP distance. This comparison is performed by using the proper tts::ulp_distance overload.

Parameters

Producer	Data set generator to use.
RefType	Type to use as reference function input.
NewType	Type to use as challenger function input.
RefFunc	Reference function to compare to.
NewFunc	Challenger function to be compared to the reference one.
Ulpmax	Maximal ULPs acceptable for passing the test.

Example

#define TTS_MAIN
#include <tts/tts.hpp>
 
float ok_x (float x) { return x; }
float bad_x(float x) { return x + x*1e-7f; }
 
TTS_CASE( "Test range check" )
{
  TTS_ULP_RANGE_CHECK ( [] (auto i, auto c) { return (100.f*i)/c; }
                      , float, float , ok_x, bad_x
                      , 2.
                      );
};