Defined in 3 files as a macro:
- external/gpl3/gcc.old/dist/libgfortran/c99_protos.h, line 529 (as a macro)
- external/gpl3/gcc.old/dist/libgfortran/intrinsics/c99_functions.c, line 1652 (as a macro)
- external/gpl3/gcc.old/dist/libgfortran/intrinsics/c99_functions.c, line 1691 (as a macro)