Question

input arguments of imported functions implemented in C shall always have a const qualifier.

input arguments, with the exception of open arrays, are passed by value or by reference, depending on the size. ‘Small’ values of formal input arguments are passed by value. The following data types are considered small:

• byte, shortint, int, longint, real, shortreal
• chandle, string
• bit (i.e., 2-state) packed arrays up to 32 bits (canonical representation shall be used, like for a function result; thus a small packed bit array shall be represented as const svBitVec32) input arguments of other types are passed by reference.

If an input argument is a packed bit array passed by value, its value shall be represented using the canonical representation svBitVec32. If the size is smaller than 32 bits, the most significant bits are unused and their contents are undetermined. The user is responsible for the masking or the sign extension, depending on the sign, for the unused bits.