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unary ^ update.

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[]int -> string is already in the document.

DELTA=7  (1 added, 1 deleted, 5 changed)
OCL=29622
CL=29631
This commit is contained in:
Russ Cox 2009-05-29 16:04:16 -07:00
parent 65ec16b637
commit d83dc4f5c6
1 changed files with 6 additions and 6 deletions
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12
doc/go_spec.html
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@ -2577,7 +2577,8 @@ follows:
<pre class="grammar">
+x is 0 + x
-x negation is 0 - x
^x bitwise complement is m ^ x with m = "all bits set to 1"
^x bitwise complement is m ^ x with m = "all bits set to 1" for unsigned x
and m = -1 for signed x
</pre>
<p>
@ -2944,10 +2945,9 @@ uint8(100) * 100 // error, out of range
</pre>
<p>
The size of the mask used by the unary bitwise complement
operator in a typed constant expression is equal to the size of the
expression's type. In an ideal constant expression, the bitwise
complement operator inverts all the bits, producing a negative value.
The mask used by the unary bitwise complement operator matches
the rule for non-constants: the mask is the all 1s for unsigned constants
and -1 for signed and ideal constants.
</p>
<pre>
@ -2955,7 +2955,7 @@ complement operator inverts all the bits, producing a negative value.
uint8(^1) // error, same as uint8(-2), out of range
^uint8(1) // typed uint8 constant, same as 0xFF ^ uint8(1) = uint8(0xFE)
int8(^1) // same as int8(-2)
^int8(1) // error, same as 0xFF ^ int8(1) = int8(0xFE), out of range
^int8(1) // same as -1 ^ int8(1) = -2
</pre>
<p>