| /* | |
| js> (((-1 >>> 1) + 1) * Math.pow(2, 52 - 30) + 1) & 1 | |
| 0 | |
| js> (((-1 >> 1) + 1) * Math.pow(2, 52 - 30) + 1) & 1 | |
| 1 | |
| */ | |
| function f(x) { | |
| if (x >= 0) { | |
| // if it does not fail, try with lower power of 2. | |
| return (((x >>> 1) + 1) * 4194304 /* 2 ** (52 - 30) */ + 1) & 1; | |
| } | |
| return 2; | |
| } | |
| assertEq(f(-1 >>> 1), 1); | |
| assertEq(f(-1 >>> 0), 0); | |
| assertEq(f(-1 >>> 0), 0); |