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If myushortvar is USHORT the ASSERT will always be true
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If myushortvar is USHORT the ASSERT will always be true

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Thank you for pointing that out, ozo. I should have used result_of_ulong_calc instead of myushortvar.
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Thank you for pointing that out, ozo. I should have used result_of_ulong_calc instead of myushortvar.

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As part of a bit of defensive programming, I would like to use an assert to make sure that when I cast a ULONG into a USHORT variable that I won't be overflowing the size of numbers that a USHORT can handle. &nbsp;Will the following work, do you think? &nbsp;I think it needs the cast to ULONG so that the comparison is done as a ULONG.<br />
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#define MAX_USHORT &nbsp; &nbsp;((ULONG) ~((USHORT) 0x0))<br />
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ASSERT(myushortvar &lt;= MAX_USHORT);
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As part of a bit of defensive programming, I would like to use an assert to make sure that when I cast a ULONG into a USHORT variable that I won't be overflowing the size of numbers that a USHORT can handle.  Will the following work, do you think?  I think it needs the cast to ULONG so that the comparison is done as a ULONG.

#define MAX_USHORT    ((ULONG) ~((USHORT) 0x0))

ASSERT(myushortvar <= MAX_USHORT);

Testing for USHORT variable overflow

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.