src/third_party/v8/test/mjsunit/hex-parsing.js

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var k = 0x1000000000000081;
assertEquals(1152921504606847200, k);
k = 0x1000000000000281;
assertEquals(1152921504606847700, k);
k = 0x10000000000002810;
assertEquals(18446744073709564000, k);
k = 0x10000000000002810000;
assertEquals(7.555786372591437e+22, k);
k = 0xffffffffffffffff;
assertEquals(18446744073709552000, k);
k = 0xffffffffffffffffffff;
assertEquals(1.2089258196146292e+24, k);