- lowercased package name (Bignum -> bignum)
- implemented some missing functionality (and, or, xor of positive ints)
R=r
OCL=19087
CL=19087
diff --git a/src/lib/bignum.go b/src/lib/bignum.go
index 6c3da26..9499a43 100755
--- a/src/lib/bignum.go
+++ b/src/lib/bignum.go
@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-package Bignum
+package bignum
// A package for arbitrary precision arithmethic.
// It implements the following numeric types:
@@ -1076,27 +1076,42 @@
func (x *Integer) Shr(s uint) *Integer {
z := MakeInt(x.sign, x.mant.Shr(s));
if x.IsNeg() {
- panic("UNIMPLEMENTED");
+ panic("UNIMPLEMENTED Integer.Shr() of negative values");
}
return z;
}
func (x *Integer) And(y *Integer) *Integer {
- panic("UNIMPLEMENTED");
- return nil;
+ var z *Integer;
+ if !x.sign && !y.sign {
+ z = MakeInt(false, x.mant.And(y.mant));
+ } else {
+ panic("UNIMPLEMENTED Integer.And() of negative values");
+ }
+ return z;
}
func (x *Integer) Or(y *Integer) *Integer {
- panic("UNIMPLEMENTED");
- return nil;
+ var z *Integer;
+ if !x.sign && !y.sign {
+ z = MakeInt(false, x.mant.Or(y.mant));
+ } else {
+ panic("UNIMPLEMENTED Integer.Or() of negative values");
+ }
+ return z;
}
func (x *Integer) Xor(y *Integer) *Integer {
- panic("UNIMPLEMENTED");
- return nil;
+ var z *Integer;
+ if !x.sign && !y.sign {
+ z = MakeInt(false, x.mant.Xor(y.mant));
+ } else {
+ panic("UNIMPLEMENTED Integer.Xor() of negative values");
+ }
+ return z;
}
