Floating point rounding modes: we should restrict them slightly

[Walter Bright]

Brad Roberts wrote:
> Walter Bright wrote:
>> strlen() is safe, while strcpy() and printf() are not.
> 
> You sure?  Does running beyond the bounds of the array if there's no null
> termination count as safe some how? :)

Yes. Memory safety is defined as being free of memory corruption errors. 
Simply reading memory out of bounds does not corrupt memory.

Note that it is ok for a memory safe program to generate a seg fault.

printf() is not memory safe because of the %n format.