26 lines
850 B
Markdown
26 lines
850 B
Markdown
@defgroup builtins Core Built-ins
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@{
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@brief This chapter describes the core built-in predicates that control the execution of
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Prolog programs, provide fundamental functionality such as termm manipulation or arithmetic, and support interaction with external
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resources,
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Many of the predicates described here have been standardised by the International Standard Organization.
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The corresponding standartised subset of Prolog also known as ISO-Prolog.
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In the description of the arguments of predicates the following
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notation will be used:
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+ a preceding plus sign will denote an argument as an "input
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argument" - the argument is read, not written, and it cannot
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be a free variable at the time of the call;
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+ a preceding minus sign will denote an "output argument";
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+ an argument with no preceding symbol can be used in both ways.
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[TOC]
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@}
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