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5.17.1  Context-dependent functions.

Operators + and -

+ (resp. -) is an infixed function and ’+’ (resp. ’-’) is a prefixed function. The result depends on the nature of its arguments.
Examples with + (all examples except the last one work also with - instead of +):

Operator *

* is an infixed function and ’*’ is a prefixed function. The result depends on the nature of its arguments.
Examples with *:

Operator /

/ is an infixed function and ’/’ is a prefixed function. The result depends of the nature of its arguments.
Examples with /:


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