| /* Test the proper operation of the logical right shift operator. This is |
| * especially important on ARM as an explicit mask is required at the native |
| * instruction level. */ |
| |
| load(libdir + 'range.js'); |
| |
| function testShiftRightLogical() |
| { |
| var r = []; |
| var i = 0; |
| var j = 0; |
| |
| var shifts = [0,1,7,8,15,16,23,24,31]; |
| |
| /* Samples from the simple shift range. */ |
| for (i = 0; i < shifts.length; i++) |
| r[j++] = -2147483648 >>> shifts[i]; |
| |
| /* Samples outside the normal shift range. */ |
| for (i = 0; i < shifts.length; i++) |
| r[j++] = -2147483648 >>> (shifts[i] + 32); |
| |
| /* Samples far outside the normal shift range. */ |
| for (i = 0; i < shifts.length; i++) |
| r[j++] = -2147483648 >>> (shifts[i] + 224); |
| for (i = 0; i < shifts.length; i++) |
| r[j++] = -2147483648 >>> (shifts[i] + 256); |
| |
| return r.join(","); |
| } |
| /* Note: Arguments to the ">>>" operator are converted to unsigned 32-bit |
| * integers during evaluation. As a result, -2147483648 >>> 0 evaluates to the |
| * unsigned interpretation of the same value, which is 2147483648. */ |
| assertEq(testShiftRightLogical(), |
| "2147483648,1073741824,16777216,8388608,65536,32768,256,128,1,"+ |
| "2147483648,1073741824,16777216,8388608,65536,32768,256,128,1,"+ |
| "2147483648,1073741824,16777216,8388608,65536,32768,256,128,1,"+ |
| "2147483648,1073741824,16777216,8388608,65536,32768,256,128,1"); |
