On 08/21/2012 06:40 PM, Jeff B wrote:
(int)floatVarA = 0.000000 <<=== initial value 0??
On 08/22/2012 03:50 AM, Andrew Haley wrote:
The initial value is zero because there is garbage in Float Register 0.
floatVarA = 1234.000000
Now Float Register 0 contains 1234.0 .
(int)floatVarA = 1234.000000 <<=== changed
Which gets printed out.
floatVarB = 5678.000000
Now Float Register 0 contains 5678.0 .
(int)floatVarA = 5678.000000 <<=== changed again
Which gets printed out.
floatVarA = 1234.000000
etc...
Moral: undefined behaviour can do anything.
Andrew.
OK, then I guess the presence of the cast makes it OK for the compiler
to pull the bits for a variable from somewhere other than where the
variable actually is.
So, while we are at it, what other casts should I avoid?
Thanks.
