These routines are not available for programs compiled with the O32 ABI.
Functions in the standard math library (_llll_iiii_bbbb_mmmm_...._aaaa) are referred to as _----_llll_mmmm
versions. Those in mathx library (_llll_iiii_bbbb_mmmm_xxxx_...._aaaa) are referred to as _----_llll_mmmm_xxxx
versions, and those in the the BSD math library (_llll_iiii_bbbb_mmmm_4444_3333_...._aaaa) are referred
to as _----_llll_mmmm_4444_3333 versions.
The _ffff_pppp_cccc_llll_aaaa_ssss_ssss_iiii_ffff_yyyy macro returns the value of the number classification macro
appropriate to the value of its argument.
The _iiii_ssss_iiii_nnnn_ffff_iiii_nnnn_iiii_tttt_eeee macro returns a non-zero value if and only if its argument
has a finite value.
The _iiii_ssss_iiii_nnnn_ffff macro returns a nonzero value if its argument has an infinite
value.
The _iiii_ssss_nnnn_oooo_rrrr_mmmm_aaaa_llll macro returns a nonzero value if its argument has a normal
value.
The _iiii_ssss_uuuu_nnnn_oooo_rrrr_dddd_eeee_rrrr_eeee_dddd macro returns 1 if its arguments are unordered and
returns 0 otherwise.
These macros are implemented in terms of ordinary functions depending on
the argument used; for example, if _x is a float value, the macro is
redefined as _ffff_pppp_cccc_llll_aaaa_ssss_ssss_iiii_ffff_yyyy_ffff. If _x is double, the macro is redefined as
_ffff_pppp_cccc_llll_aaaa_ssss_ssss_iiii_ffff_yyyy. If _x is long double, the macro is redefined as _ffff_pppp_cccc_llll_aaaa_ssss_ssss_iiii_ffff_yyyy_llll.
NNNNOOOOTTTTEEEESSSS
Long double operations on this system are only supported in round to
nearest rounding mode (the default). The system must be in round to
nearest rounding mode when calling any of the long double functions, or
incorrect answers will result.
RRRREEEETTTTUUUURRRRNNNN VVVVAAAALLLLUUUUEEEESSSS
The _----_llll_mmmm and _----_llll_mmmm_xxxx versions always return the default Quiet NaN and set
_eeee_rrrr_rrrr_nnnn_oooo to EDOM when a NaN is used as an argument. A NaN argument usually
causes the _----_llll_mmmm_4444_3333 versions to return the same argument. The _----_llll_mmmm_4444_3333