Simplified another pair of bit width checks using the right shift operator.
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@ -375,7 +375,7 @@ public final class QrCode {
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rem = (rem << 1) ^ ((rem >>> 9) * 0x537);
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rem = (rem << 1) ^ ((rem >>> 9) * 0x537);
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data = data << 10 | rem;
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data = data << 10 | rem;
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data ^= 0x5412; // uint15
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data ^= 0x5412; // uint15
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if ((data & ((1 << 15) - 1)) != data)
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if (data >>> 15 != 0)
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throw new AssertionError();
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throw new AssertionError();
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// Draw first copy
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// Draw first copy
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@ -407,7 +407,7 @@ public final class QrCode {
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for (int i = 0; i < 12; i++)
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for (int i = 0; i < 12; i++)
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rem = (rem << 1) ^ ((rem >>> 11) * 0x1F25);
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rem = (rem << 1) ^ ((rem >>> 11) * 0x1F25);
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int data = version << 12 | rem; // uint18
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int data = version << 12 | rem; // uint18
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if ((data & ((1 << 18) - 1)) != data)
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if (data >>> 18 != 0)
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throw new AssertionError();
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throw new AssertionError();
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// Draw two copies
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// Draw two copies
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@ -354,7 +354,7 @@ var qrcodegen = new function() {
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rem = (rem << 1) ^ ((rem >>> 9) * 0x537);
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rem = (rem << 1) ^ ((rem >>> 9) * 0x537);
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data = data << 10 | rem;
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data = data << 10 | rem;
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data ^= 0x5412; // uint15
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data ^= 0x5412; // uint15
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if ((data & ((1 << 15) - 1)) != data)
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if (data >>> 15 != 0)
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throw "Assertion error";
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throw "Assertion error";
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// Draw first copy
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// Draw first copy
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@ -386,7 +386,7 @@ var qrcodegen = new function() {
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for (var i = 0; i < 12; i++)
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for (var i = 0; i < 12; i++)
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rem = (rem << 1) ^ ((rem >>> 11) * 0x1F25);
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rem = (rem << 1) ^ ((rem >>> 11) * 0x1F25);
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var data = version << 12 | rem; // uint18
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var data = version << 12 | rem; // uint18
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if ((data & ((1 << 18) - 1)) != data)
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if (data >>> 18 != 0)
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throw "Assertion error";
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throw "Assertion error";
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// Draw two copies
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// Draw two copies
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@ -294,7 +294,7 @@ class QrCode(object):
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rem = (rem << 1) ^ ((rem >> 9) * 0x537)
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rem = (rem << 1) ^ ((rem >> 9) * 0x537)
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data = data << 10 | rem
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data = data << 10 | rem
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data ^= 0x5412 # uint15
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data ^= 0x5412 # uint15
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assert data & ((1 << 15) - 1) == data
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assert data >> 15 == 0
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# Draw first copy
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# Draw first copy
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for i in range(0, 6):
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for i in range(0, 6):
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@ -324,7 +324,7 @@ class QrCode(object):
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for _ in range(12):
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for _ in range(12):
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rem = (rem << 1) ^ ((rem >> 11) * 0x1F25)
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rem = (rem << 1) ^ ((rem >> 11) * 0x1F25)
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data = self._version << 12 | rem # uint18
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data = self._version << 12 | rem # uint18
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assert data & ((1 << 18) - 1) == data
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assert data >> 18 == 0
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# Draw two copies
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# Draw two copies
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for i in range(18):
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for i in range(18):
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