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- lowercased package name (Bignum -> bignum) 

- implemented some missing functionality (and, or, xor of positive ints)

R=r
OCL=19087
CL=19087
This commit is contained in:
Robert Griesemer 2008-11-12 11:00:11 -08:00
parent 9c9cc2c9d8
commit 2727abe4fc
1 changed files with 23 additions and 8 deletions
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31
src/lib/bignum.go
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@ -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) Shl(s uint) *Integer {
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;
}