On Fri, 16 Nov 2018, Tejas Joshi wrote: > About roundeven, there might be need to add case to > expand_builtin_int_roundingfn similar to > ceil, for expansion. > But how is round() expanded since there's no > entry for it in expand_builtin_int_roundingfn ?
Please see the comment above expand_builtin_int_roundingfn, and that above expand_builtin_int_roundingfn_2, which handle different sets of functions. Those functions are of no relevance to adding support for built-in roundeven. (They might be of relevance to support for built-in fromfp functions, depending on whether the detailed semantics allows casts-to-integer of calls to other functions to be converted into calls to the fromfp functions. But I don't think inventing __builtin_lroundeven would be appropriate.) > Also, is it right to have an added case for roundeven in convert.c > along CASE_FLT_FN (BUILT_IN_ROUND) > in convert_to_integer_1? Not until doing things with fromfp functions. There is no lroundeven (for example) in TS 18661-1. -- Joseph S. Myers jos...@codesourcery.com
