[boost] [test] Floating point comparison update

Subject: [boost] [test] Floating point comparison update
From: Gennadiy Rozental (rogeeff_at_[hidden])
Date: 2008-12-23 23:44:46

Hi,

I've checked in 2 changes to the floating point comparison tools.

1. BOOST_CHECK_CLOSE now can compare values of different types:

     BOOST_CHECK_CLOSE( 2, 2.1, 6 ); // compare and and double
     BOOST_CHECK_CLOSE( 2.1, 2, 6 ); // compare double and int
     BOOST_CHECK_CLOSE( 2.1, 2.f, 6 ); // compare double and float

2. Floating point comparison tools now report difference if any:

     BOOST_CHECK_CLOSE( 2, 2.1, 3 ) will lead to:

difference{4.7619%} between 2{2} and 2.1{2.1} exceeds 3%

     BOOST_CHECK_CLOSE_FRACTION( 2, 2.1, 0.04 ) will lead to:

difference{0.047619} between 2{2} and 2.1{2.1} exceeds 0.04

Any comments appreciated,

Gennadiy