-/* Sizes for integer arithmetic. Go for 64bit; can be overridden in OS/os.h-FOO */
-#ifndef int_eximarith_t
- #define int_eximarith_t int64_t
-#endif
-#ifndef PR_EXIM_ARITH
- #define PR_EXIM_ARITH "%" PRId64 /* C99 standard, printf %lld */
-#endif
-#ifndef SC_EXIM_ARITH
- #define SC_EXIM_ARITH "%" SCNi64 /* scanf incl. 0x prefix */
-#endif
-#ifndef SC_EXIM_DEC
- #define SC_EXIM_DEC "%" SCNd64 /* scanf decimal */
-#endif
+/* Sizes for integer arithmetic.
+Go for 64bit; can be overridden in OS/Makefile-FOO
+If you make it a different number of bits, provide a definition
+for EXIM_64B_MAX and _MIN in OS/oh.h-FOO */
+#define int_eximarith_t int64_t
+#define PR_EXIM_ARITH "%" PRId64 /* C99 standard, printf %lld */
+#define SC_EXIM_ARITH "%" SCNi64 /* scanf incl. 0x prefix */
+#define SC_EXIM_DEC "%" SCNd64 /* scanf decimal */