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since some time GCC has BUILT_IN_IROUND{F,,L}, similar to lround() and llround() but the result is returned as an integer.
Regtested on x86_64-unknown-linux-gnu, Ok for trunk?
2012-03-15 Janne Blomqvist<jb@gcc.gnu.org>
* f95-lang.c (gfc_init_builtin_functions): Initialize BUILT_IN_IROUND. * mathbuiltins.def: Add IROUND. * trans-intrinsic.c (build_round_expr): Use BUILT_IN_IROUND if type size matches. (gfc_build_intrinsic_lib_fndecls): Build iround functions.
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