3.16 Arithmetics

Procedures for arithmetics.

Reader Syntax: nnn:mmm

creates a ratio n:m.

Function: : real1 real2

creates a ratio real1:real2.

Function: ratio-to ratio real

computse x of a:b=real:x.

Function: inverted-ratio-to ratio real

computes x of a:b=x:real.

Function: ratio-value ratio

computes a/b of a:b.

Reader Syntax: nnn.mmx...

expresses a recurring decimal nnn.mmx….

Reader Syntax: nnn.mm{xx}

expresses a recurring decimal nnn.mm(xx).

Reader Syntax: a/b+/c … +/d

expresses a continued fraction shown as follows. a / (b + 1 / (c + … + 1 / d))

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