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Annex M (informative)

Implementation-Defined Characteristics
Chapter
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2219)

Abstract

The Ada language allows for certain machine dependences in a controlled manner. Each Ada implementation must document all implementation-defined characteristics:
  • Whether or not each recommendation given in Implementation Advice is followed. See 1.1.2(37).

  • Capacity limitations of the implementation. See 1.1.3(3).

  • Variations from the standard that are impractical to avoid given the implementation’s execution environment. See 1.1.3(6).

  • Which code_statements cause external interactions. See 1.1.3(10).

  • The coded representation for the text of an Ada program. See 2.1(4).

  • The control functions allowed in comments. See 2.1(14).

  • The representation for an end of line. See 2.2(2).

  • Maximum supported line length and lexical element length. See 2.2(14).

  • Implementation-defined pragmas. See 2.8(14).

  • Effect of pragma Optimize. See 2.8(27).

  • The sequence of characters of the value returned by S’Image when some of the graphic characters of S’Wide_Image are not defined in Character. See 3.5(37).

  • The predefined integer types declared in Standard. See 3.5.4(25).

  • Any nonstandard integer types and the operators defined for them. See 3.5.4(26).

  • Any nonstandard real types and the operators defined for them. See 3.5.6(8).

  • What combinations of requested decimal precision and range are supported for floating point types. See 3.5.7(7).

  • The predefined floating point types declared in Standard. See 3.5.7(16).

  • The small of an ordinary fixed point type. See 3.5.9(8).

  • What combinations of small, range, and digits are supported for fixed point types. See 3.5.9(10).

  • The result of Tags.Expanded_Name for types declared within an unnamed block_statement. See 3.9(10).

  • Implementation-defined attributes. See 4.1.4(12/1).

  • Any implementation-defined time types. See 9.6(6).

  • The time base associated with relative delays. See 9.6(20).

  • The time base of the type Calendar.Time. See 9.6(23).

  • The timezone used for package Calendar operations. See 9.6(24).

  • Any limit on delay_until_statements of select_statements. See 9.6(29).

Keywords

Time Base Visible Part Package Interface Protected Object Angle Threshold 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© The MITRE Corporation, Inc. 2000

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