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76 lines
1.1 KiB
76 lines
1.1 KiB
12 years ago
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/*===
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1
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2
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4
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1073741824
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-2147483648
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1
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===*/
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print(1 << 0);
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print(1 << 1);
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print(1 << 2);
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print(1 << 30);
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print(1 << 31); /* becomes signed */
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print(1 << 32); /* shiftcount is masked with 0x1f, so this is the same as 1 << 0 */
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/*===
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256
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128
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64
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256
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0
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-1
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-1
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-1
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===*/
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print(256 >> 0);
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print(256 >> 1);
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print(256 >> 2);
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print(256 >> 32); /* == 256 >> 0 */
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print(4294967296 >> 0); /* ToInt32() -> 0 */
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print(4294967295 >> 0); /* ToInt32() -> -1 */
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print(4294967295 >> 1); /* -1 >> N is still -1 */
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print(4294967295 >> 10);
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/*===
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256
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128
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64
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256
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0
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4294967295
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2147483647
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4194303
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===*/
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print(256 >>> 0);
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print(256 >>> 1);
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print(256 >>> 2);
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print(256 >>> 32); /* == 256 >> 0 */
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print(4294967296 >>> 0); /* ToUint32() -> 0 */
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print(4294967295 >>> 0); /* ToUint32() -> 4294967295 */
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print(4294967295 >>> 1);
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print(4294967295 >>> 10);
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/*===
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32
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===*/
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/* Addition binds more tightly, thus: 1 << 2 + 3 === 1 << 5 === 32 */
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print(1 << 2 + 3);
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/*===
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64
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===*/
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/* Shifting is left associative, thus: 1 << 2 << 4 === (1 << 2) << 4
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* === 4 << 4 === 64, and not 1 << (2 << 4) === 1 (!).
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*/
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print(1 << 2 << 4);
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