Johan Råde wrote:
Markus Schöpflin wrote:
You can't leave out -ieee as the Alpha needs some special compiler help for conforming IEEE math handling, the processor itself is only 'mostly conformant'.
What happens if you leave out -ieee?
fpclassify/test> cxx -D__USE_STD_IOSTREAM -I /vol2/boost/boost test.cpp -lm && ./a.out fp_traits<float>::type is specialized fp_traits<double>::type is specialized fp_traits<long double>::type is generic sizeof(long double) = 16 Testing float Assertion failed: std::numeric_limits<T>::has_denorm, file test.cpp, line 100 IOT/Abort trap (core dumped)
Could you run the inspect tool with -ieee leaved out?
fpclassify/tools/inspect> cxx -D__USE_STD_IOSTREAM -I /vol2/boost/boost inspect.cpp -lm && ./a.out This platform is little-endian. BOOST_LITTTLE_ENDIAN is defined. ---------- float -------------------- 0 00 00 00 00 sn. min 00 00 00 00 -sn. min 80 00 00 00 n. min/2 00 00 00 00 -n. min/2 00 00 00 00 n. min 00 80 00 00 1 3f 80 00 00 3/2 3f c0 00 00 4/3 3f aa aa ab max 7f 7f ff ff inf -- -- -- -- q. nan -- -- -- -- s. nan -- -- -- -- ---------- double ------------------- 0 00 00 00 00 00 00 00 00 sn. min 00 00 00 00 00 00 00 00 -sn. min 80 00 00 00 00 00 00 00 n. min/2 00 00 00 00 00 00 00 00 -n. min/2 00 00 00 00 00 00 00 00 n. min 00 10 00 00 00 00 00 00 1 3f f0 00 00 00 00 00 00 3/2 3f f8 00 00 00 00 00 00 4/3 3f f5 55 55 55 55 55 55 max 7f ef ff ff ff ff ff ff inf -- -- -- -- -- -- -- -- q. nan -- -- -- -- -- -- -- -- s. nan -- -- -- -- -- -- -- -- ---------- long double -------------- 0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 sn. min 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -sn. min 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 n. min/2 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 -n. min/2 80 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 n. min 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1 3f ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3/2 3f ff 80 00 00 00 00 00 00 00 00 00 00 00 00 00 4/3 3f ff 55 55 55 55 55 55 55 55 55 55 55 55 55 55 max 7f fe ff ff ff ff ff ff ff ff ff ff ff ff ff ff inf -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- q. nan -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- s. nan -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --