Re: [boost] [test] floating point comparison

Le 26/04/15 22:22, Emil Dotchevski a écrit :

On Sun, Apr 26, 2015 at 12:14 AM, Gennadiy Rozental wrote:

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Emil Dotchevski writes:

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Hello,

Can someone please tell me exactly what do I need to include and which namespace to use to get exact same behavior as:

#include

bool check( float a, float b, float tolerance ) { using namespace boost::test_tools; return check_is_close(a,b,fraction_tolerance(tolerance)); }

(The above used to work with older Boost versions but no longer.)

Do you refer to the develop branch?

BOOST_TEST(a==b, tolerance);

should do the same.

Yes, sorry -- I mean the development branch.

Could you provide a replacement for the function above? Note that it returns a value, which isn't the same as BOOST_TEST. Also please indicate what headers need to be included.

Emil

Hi Emil, The corresponding documentation has been updated recently: http://www.boost.org/doc/libs/develop/libs/test/doc/html/boost_test/users_gu... and http://www.boost.org/doc/libs/develop/libs/test/doc/html/boost/math/fpc/clos... Those pages indicate the required headers and namespaces. BOOST_TEST is using this predicate, so would you please give me some more info about "Note that it returns a value, which isn't the same as BOOST_TEST"? The corresponding equivalent code should be bool check( float a, float b, float tolerance ) { using namespace boost::math::fpc; close_at_tolerance obj(tolerance); return obj(a,b); } Best, Raffi