IAR Embedded Workbench for RH850 3.20.xIAR C/C++ DevelopmentThe preprocessorDescription of predefined preprocessor symbols__STDC_VERSION____STDC_VERSION__In this section: DescriptionAn integer that identifies the version of the C standard in use. The symbol expands to 201710L, unless the ‑‑c89 compiler option is used, in which case the symbol expands to 199409L.This symbol is required by Standard C.