arith: move c_unum and unum declaration into lib.h

The c_unum and unum functions are fairly often needed
and and are closely related to c_num and num, which have
always been declared in lib.h even though they live in
arith.c. Files not doing arithmetic are including "arith.h"
just for the sake of c_num or unum.

* arith.h (c_unum, unum): Declarations removed.

* lib.h (c_unum, unum): Declarations moved here.

* chksum.c, debug.c, stream.c,  strudel.c, sysif.c, vm.c:
These files no longer require #include "arith.h" as a result,
which is therefore removed.

1 files changed, 0 insertions, 2 deletions

diff --git a/arith.h b/arith.h
index cf352040..177b2417 100644
--- a/arith.h
+++ b/arith.h
@@ -39,8 +39,6 @@ val bignum_dbl_ipt(double_intptr_t di);
 val bignum_dbl_uipt(double_uintptr_t dui);
 #endif
 val in_int_ptr_range(val bignum);
-ucnum c_unum(val num);
-val unum(ucnum u);
 #if HAVE_DOUBLE_INTPTR_T
 double_intptr_t c_dbl_num(val num);
 double_uintptr_t c_dbl_unum(val num);