Just stumbled across this and thought some might find it interesting:
http://en.wikipedia.org/wiki/C1X
"The October 2010 draft includes several changes to the C99 language
and library specifications, such as:
Alignment specification (_Alignas specifier, alignof operator,
aligned_alloc function, <stdalign.h> header file)
...
Multithreading support (_Thread_local storage-class specifier,
<threads.h> header including thread creation/management functions,
mutex, condition variable and thread-specific storage functionality,
as well as the _Atomic type qualifier and <stdatomic.h> for
uninterruptible object access)
...
More macros for querying the characteristic of floating point types,
concerning subnormal floating point numbers, and the number of decimal
digits the type is able to store.
..."
james.
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