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docbook-style-dsssl-doc-1.79-16.mga7.noarch.rpm

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>measurement-to-length</H1
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>Name</H2
>measurement-to-length&nbsp;--&nbsp;Convert a measurement to a length</DIV
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>Synopsis</H2
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>(measurement-to-length measure)</PRE
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>Description</H2
><P
>Given a string containing a measurement, return that measurement
as a length.</P
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>Example</H2
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><TT
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>"2.5cm"</TT
> returns 2.5cm as a length.  <TT
CLASS="LITERAL"
>"3.4barleycorn"</TT
> returns
6.8pi.</P
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>Author</H2
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>Norman Walsh, &lt;ndw@nwalsh.com&gt;</P
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>Source Code</H2
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>(define (measurement-to-length measure)
  ;; Convert a measurement to a length
  (let* ((pm (car (parse-measurement measure)))
	 (pu (car (cdr (parse-measurement measure))))
	 (magnitude (if pm pm "1"))
	 (units     (if pu pu (if pm "pt" "default")))
	 (unitconv  (assoc units unit-conversion-alist))
	 (factor    (if unitconv (car (cdr unitconv)) 1pt)))
    (* (string-&#62;number magnitude) factor)))</PRE
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