https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118246
--- Comment #5 from newbie-02 <newbie-02 at gmx dot de> --- (In reply to Richard Biener from comment #4) > quadmath.h does not contain FLT128_TRUE_MIN or MAX I see them in float.h, also see FLT128_TRUE_MIN there as pointing define to __FLT128_DENORM_MIN__ , guarded by an ifdef for __STDC_WANT_IEC_60559_TYPES_EXT__ , but even setting that doesn't make FLT128_TRUE_MIN accessible. however 'x1q = __FLT128_DENORM_MIN__;' compiles and works ... ~confused~