Style guides and portability

[Paul Tomblin]

scs at adam.mit.edu (Steve Summit) writes:
>The only
>problem I have with user-defined types in C is printing them.
>If you have

>	int32 bigint;

>do you print it with %d or %ld?  (Come to think of it, this is
>another strong argument in favor of "long int" over "int32".)

Simple, you cast all your integer types to long, and printf them as %ld.
{The cast probably isn't even needed, because it's a variadic function.
If I remember correctly, variadic functions are type promoted the same way
classic C functions are, integer types (char, int, unsigned, etc) are 
promoted to long, real types (float, double) are promoted to double.

Anybody know what happens to "long double" types in variadic functions, or 
is "long double" not an ANSI-C type?
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