/* Test the proper operation of the arithmetic right shift operator. This is * especially important on ARM as an explicit mask is required at the native * instruction level. */ /* Test different combinations of literals/variables. */ var s = 4; var t = 100; assertEq(42 >> s, 2); assertEq(s >> 1, 2); assertEq(23 >> 3, 2); assertEq(t >> s, 6); function testShiftRightArithmetic() { 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(","); } assertEq(testShiftRightArithmetic(), "-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");