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Pastel is an extended version of the Pascal programming language, created in c. 1982 for ''Amber'', an operating system for the S-1 supercomputer project at Lawrence Livermore National Laboratory in California. Pastel was conceived by Jeffrey M. Broughton, then Project Engineer in charge of compilers and operating system software for the S-1 project, because of dissatisfaction with the PL/1 language in which Amber was being implemented. The language was named Pastel ("an off-color Pascal") and was the inspiration for Richard Stallman's GNU C compiler. Compared with Pascal compilers of that period, Pastel's features included:〔(【引用サイトリンク】 chapter = S-l Software Development: Programming Languages Supported )〕 *Improved type definition *Parametric types *Explicit packing and allocation control *Additional parameter passing modes *Additional control constructs *Set iteration *Loop-exit form *Return statement *Module definition *Exception handling *General enhancements *Conditional boolean operations *Constant expressions *Variable initialization ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pastel (programming language)」の詳細全文を読む スポンサード リンク
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