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Standard Package


The STANDARD package predefines a number of types, subtypes, and functions which are visible to all design units.


The STANDARD package is a part of the Language Specification. It defines basic types, subtypes, and functions, together with operators available for each of the (sub)types defined. The operators are specified implicitly. Below is a complete list of declared types, together with their predefined operators.


The STANDARD package declares following types:

and three subtypes:

See Boolean, Bit, Character, Integer, Real, Physical Types, String, Bit_Vector and File for details on respective types.

Important Notes

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