4.2.9 Bitwise operators

From: Bresticker, Shalom <shalom.bresticker_at_.....>
Date: Tue Jun 10 2008 - 00:13:56 PDT
Hi,

In Draft 4a, section 4.2.9 (Bitwise operators) contains two errors:

1. Table 4-12 (Bitwise binary exclusive nor operator) should is the same
as Table 4-11 (Bitwise binary exclusive or operator),
whereas it should be the reverse. In 1364-2005, it is correct.

2. The statement "When the operands are of unequal bit length, the
shorter operand is zero-filled in the most significant bit positions,"
is not correct when both operands are signed. In that case, it is
sign-extended. The same error appears in 1364-2005, but it will be
corrected in 1800-2009.

Regards,
Shalom

Shalom Bresticker
Intel Jerusalem LAD DA
+972 2 589-6582
+972 54 721-1033

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Received on Tue Jun 10 00:16:22 2008

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