| 1 | function int64(low, hi) { |
| 2 | this.low = (low >>> 0); |
| 3 | this.hi = (hi >>> 0); |
| 4 | |
| 5 | this.add32inplace = function (val) { |
| 6 | var new_lo = (((this.low >>> 0) + val) & 0xFFFFFFFF) >>> 0; |
| 7 | var new_hi = (this.hi >>> 0); |
| 8 | |
| 9 | if (new_lo < this.low) { |
| 10 | new_hi++; |
| 11 | } |
| 12 | |
| 13 | this.hi = new_hi; |
| 14 | this.low = new_lo; |
| 15 | } |
| 16 | |
| 17 | this.add32 = function (val) { |
| 18 | var new_lo = (((this.low >>> 0) + val) & 0xFFFFFFFF) >>> 0; |
| 19 | var new_hi = (this.hi >>> 0); |
| 20 | |
| 21 | if (new_lo < this.low) { |
| 22 | new_hi++; |
| 23 | } |
| 24 | |
| 25 | return new int64(new_lo, new_hi); |
| 26 | } |
| 27 | |
| 28 | this.sub32 = function (val) { |
| 29 | var new_lo = (((this.low >>> 0) - val) & 0xFFFFFFFF) >>> 0; |
| 30 | var new_hi = (this.hi >>> 0); |
| 31 | |
| 32 | if (new_lo > (this.low) & 0xFFFFFFFF) { |
| 33 | new_hi--; |
| 34 | } |
| 35 | |
| 36 | return new int64(new_lo, new_hi); |
| 37 | } |
| 38 | |
| 39 | this.sub32inplace = function (val) { |
| 40 | var new_lo = (((this.low >>> 0) - val) & 0xFFFFFFFF) >>> 0; |
| 41 | var new_hi = (this.hi >>> 0); |
| 42 | |
| 43 | if (new_lo > (this.low) & 0xFFFFFFFF) { |
| 44 | new_hi--; |
| 45 | } |
| 46 | |
| 47 | this.hi = new_hi; |
| 48 | this.low = new_lo; |
| 49 | } |
| 50 | |
| 51 | this.and32 = function (val) { |
| 52 | var new_lo = this.low & val; |
| 53 | var new_hi = this.hi; |
| 54 | return new int64(new_lo, new_hi); |
| 55 | } |
| 56 | |
| 57 | this.and64 = function (vallo, valhi) { |
| 58 | var new_lo = this.low & vallo; |
| 59 | var new_hi = this.hi & valhi; |
| 60 | return new int64(new_lo, new_hi); |