Limits_test

From: support-1_at_[hidden]
Date: 2002-02-08 02:32:18

I have been looking at why limits_test.cpp fails under MSVC6

Two reasons. A) it cannot compile the explicit specialisations for
'make_char_numeric_for_streaming'
B) The compilers incorrect handling of comparissons IEC559 non numbers
at runtime. Apparently this is fixed in VC7!

At the same time I notice some interesting pieces of unused code that
appear to have been in since version 1.2 of the file.
  // BOOST_TEST(lim::is_modulo);
and
    // The following tests may cause arithmetic traps.
    // BOOST_TEST(! (qnan < 42));
    // BOOST_TEST(! (qnan > 42));
    // BOOST_TEST(! (qnan <= 42));
    // BOOST_TEST(! (qnan >= 42));

The later interest me. Is there a technical reason in the current
automated testing system why they cannot be reinstated? If they can I
would like to extend the test to include all the IEC non-number values
including Infinities etc.

Michael Stevens, Senior Research Engineer
Australian Centre for Field Robotics
Tel:  [phone]  Fax: [phone]