shithub: femtolisp

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bignum?

--- a/builtins.c

+++ b/builtins.c

@@ -222,6 +222,15 @@

 		FL_T : FL_F;

 }

+BUILTIN("bignum?", bignump)

+{

+	argcount(nargs, 1);

+	value_t v = args[0];

+	return ((! isfixnum(v)) ||

+			(iscprim(v) && cp_numtype((cprim_t*)ptr(v)) < T_FLOAT)) ?

+		FL_T : FL_F;

+}

+

 BUILTIN("fixnum", fixnum)

 {

 	argcount(nargs, 1);

--- a/test/unittest.lsp

+++ b/test/unittest.lsp

@@ -6,10 +6,10 @@

 (define (every-int n)

   (list (fixnum n) (int8 n) (uint8 n) (int16 n) (uint16 n) (int32 n) (uint32 n)

-        (int64 n) (uint64 n)))

+        (int64 n) (uint64 n) (bignum n)))

 (define (every-sint n)

-  (list (fixnum n) (int8 n) (int16 n) (int32 n) (int64 n)))

+  (list (fixnum n) (int8 n) (int16 n) (int32 n) (int64 n) (bignum n)))

 (define (each f l)

   (if (atom? l) ()

@@ -82,8 +82,28 @@

 (assert (> 9223372036854775808 9223372036854775807))

-; mpint

+; bignum

 (assert (> 0x10000000000000000 0x8fffffffffffffff))

+

+(assert (bignum? (ash 2 60)))

+(assert (not (bignum? (- (ash 2 60) 1))))

+(assert (bignum? 1606938044258990275541962092341162602522202993782792835301376))

+

+(assert (= 4764984380238568507752444984131552966909

+        (* 66405897020462343733 71755440315342536873)))

+(assert (= 71755440315342536873

+        (div 4764984380238568507752444984131552966909 66405897020462343733)))

+(assert (= 3203431780337 (div 576460752303423487 179951)))

+(assert (= 3487 (mod 576460752303423487 18000)))

+(assert (= 7 (mod 576460752303423487 10)))

+

+(assert (= 0xffffffffffffffff (logior 0xaaaaaaaaaaaaaaaa 0x5555555555555555)))

+(assert (= 0xaaaaaaaaaaaaaaaa (logxor 0xffffffffffffffff 0x5555555555555555)))

+(assert (= 0xaaaaaaaa (logand 0xaaaaaaaaaaaaaaaa 0x55555555ffffffff)))

+(assert (= 0 (logand 0 0x5555555555555555)))

+;(assert (= 1111222233334444 (ash 11112222333344445555666677778888 -64)))

+;(assert (= 111122223333444455556666777788880000000000000000

+;         (ash 11112222333344445555666677778888 64)))

 ; NaNs

 (assert (equal? +nan.0 +nan.0))