arith.js - mozsearch

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/* Handle recompilation of arithmetic operations, and on-stack int -> double conversion. */

function add(x, y)

  var z = x + y;

  assertEq(z, 2147483732);

  assertEq(z - 10, 2147483722);

add(0x7ffffff0, 100);

function mul(x, y)

  var z = x * y;

  assertEq(z, 4294967264);

mul(0x7ffffff0, 2);

function div1(x, y)

  var z = x / y;

  assertEq(z + 10, 20);

div1(100, 10);

function div2(x, y)

  var z = x / y;

  assertEq(z + 10, 20.5);

div2(105, 10);

function uncopy(x, y)

  var q = x;

  x += y;

  q++;

  assertEq(q, 2147483633);

  assertEq(x, 2147483732);

uncopy(0x7ffffff0, 100);

function addmore(x, y)

  var q = (x + 10) + (x + y);

  assertEq(q, 4294967374);

  x = q;

addmore(0x7ffffff0, 100);