------- Additional Comments From ebotcazou at gcc dot gnu dot org 2005-05-01 12:21 ------- > GCC does not yet have __builtin_isfinite or __builtin_isnormal functions; > they > would be generically useful additions if they always avoided falling back to > a library function. __builtin_fpclassify would also be useful but would > only be usable where GCC is configured to know the FP_* values used on > a given target. > > In principle all the macros can be defined along the lines of > the isnan/isfinite/isinf definitions in libgcc2.c, with GNU extensions to > avoid multiple evaluation, but this is not very efficient.
Joseph, we are severely bitten by the __builtin_isfinite problem for the Fortran compiler (this is PR target/21315). What do you suggest? Fixincluding to GCC __builtin_* functions when possible and fixincluding away in the other cases? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19933
