id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13531	Facing build failure on PowerPC due to boost/spirit/home/x3/support/numeric_utils/sign.hpp	Rangasamy <rangasamy@…>	Joel de Guzman	"Below is the error message from boost/spirit/home/x3/support/numeric_utils/sign.hpp

This can be resolved by making the below change in sign.hpp,
#if defined(BOOST_MATH_USE_STD_FPCLASSIFY) && !defined(BOOST_MATH_DISABLE_STD_FPCLASSIFY)
        return -x; 
#else
    return (boost::math::changesign)(x);
#endif


Kindly help in making this change for future releases.

Error Message below,

../../../../../include/boost/spirit/home/x3/support/numeric_utils/sign.hpp: In instantiation of 'T snps_boost_1_63_0::spirit::x3::changesign(T) [with T = long double]':
../../../../../include/boost/spirit/home/x3/support/numeric_utils/extract_real.hpp:93:38:   required from here
../../../../../include/boost/spirit/home/x3/support/numeric_utils/sign.hpp:36:32: error: no type named 'bits' in 'traits_type {aka struct snps_boost_1_63_0::math::detail::fp_traits_non_native<long double, snps_boost_1_63_0::math::detail::extended_double_precision>}'
     typename traits_type::bits a;
                                ^
../../../../../include/boost/spirit/home/x3/support/numeric_utils/sign.hpp:37:26: error: 'get_bits' is not a member of 'traits_type {aka snps_boost_1_63_0::math::detail::fp_traits_non_native<long double, snps_boost_1_63_0::math::detail::extended_double_precision>}'
     traits_type::get_bits(x, a);
     ~~~~~~~~~~~~~~~~~~~~~^~~~~~
../../../../../include/boost/spirit/home/x3/support/numeric_utils/sign.hpp:36:32: error: no type named 'bits' in 'traits_type {aka struct snps_boost_1_63_0::math::detail::fp_traits_non_native<long double, snps_boost_1_63_0::math::detail::extended_double_precision>}'
     typename traits_type::bits a;
                                ^
../../../../../include/boost/spirit/home/x3/support/numeric_utils/sign.hpp:38:7: error: 'sign' is not a member of 'traits_type {aka snps_boost_1_63_0::math::detail::fp_traits_non_native<long double, snps_boost_1_63_0::math::detail::extended_double_precision>}'
     a ^= traits_type::sign;
     ~~^~~~~~~~~~~~~~
../../../../../include/boost/spirit/home/x3/support/numeric_utils/sign.hpp:39:26: error: 'set_bits' is not a member of 'traits_type {aka snps_boost_1_63_0::math::detail::fp_traits_non_native<long double, snps_boost_1_63_0::math::detail::extended_double_precision>}'
     traits_type::set_bits(x, a);
     ~~~~~~~~~~~~~~~~~~~~~^~~~~~
*** exit status 1 ***
"	Bugs	closed	To Be Determined	spirit	Boost 1.63.0	Problem	fixed	numeric_utils/sign.hpp	nok.raven@…