michael@0: /* Test the proper operation of the arithmetic right shift operator. This is
michael@0:  * especially important on ARM as an explicit mask is required at the native
michael@0:  * instruction level. */
michael@0: 
michael@0: load(libdir + 'range.js');
michael@0: 
michael@0: /* Test different combinations of literals/variables. */
michael@0: var s = 4;
michael@0: var t = 100;
michael@0: assertEq(42 >> s, 2);
michael@0: assertEq(s >> 1, 2);
michael@0: assertEq(23 >> 3, 2);
michael@0: assertEq(t >> s, 6);
michael@0: 
michael@0: 
michael@0: function testShiftRightArithmetic()
michael@0: {
michael@0:     var r = [];
michael@0:     var i = 0;
michael@0:     var j = 0;
michael@0: 
michael@0:     var shifts = [0,1,7,8,15,16,23,24,31];
michael@0: 
michael@0:     /* Samples from the simple shift range. */
michael@0:     for (i = 0; i < shifts.length; i++)
michael@0:         r[j++] = -2147483648 >> shifts[i];
michael@0: 
michael@0:     /* Samples outside the normal shift range. */
michael@0:     for (i = 0; i < shifts.length; i++)
michael@0:         r[j++] = -2147483648 >> (shifts[i] + 32);
michael@0: 
michael@0:     /* Samples far outside the normal shift range. */
michael@0:     for (i = 0; i < shifts.length; i++)
michael@0:         r[j++] = -2147483648 >> (shifts[i] + 224);
michael@0:     for (i = 0; i < shifts.length; i++)
michael@0:         r[j++] = -2147483648 >> (shifts[i] + 256);
michael@0: 
michael@0:     return r.join(",");
michael@0: }
michael@0: assertEq(testShiftRightArithmetic(), 
michael@0: 	 "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1,"+
michael@0: 	 "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1,"+
michael@0: 	 "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1,"+
michael@0: 	 "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1");