Re: Template/function libraries for measurement units.

>Date: Mon, 20 Jan 2003 21:52:22 -0800 (PST)
>From: Dimitre Novatchev <dnovatchev@xxxxxxxxx>
>Subject: Re:  Template/function libraries for measurement units.
>To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>
>> Yes, Dimitre's code demonstrates pure XSLT implementations with
>particular
>> attention to efficiency through the use of functional programming
>concepts.
>>
>> It may take some effort to figure out how to safely extract the
>templates you
>> need from the complete calculator application, but it is worth it, to
>get the
>> most portable solution.
>>
>
>Thank you Mike and Michael for mentioning FXSL.
>
>
>Conversion from degrees to radians is defined in the trignm.xsl module
>like this:
>
>  <xsl:variable name="deg2rads" select="$pi div 180"/>
>
>and further down:
>
>    <xsl:variable name="vRads"
>     select="(($pUnit = 'rad') * $pX)
>              + ((not($pUnit = 'rad')) * ($pX * $deg2rads))"/>
>
>which means, that when we want to conver $pX degrees to radians, we'll
>use:
>
>$pX * $deg2rads
>
>
>
>Conversion from radians to degrees is defined in the arctrignm.xsl
>module in a similar way:
>
>  <xsl:variable name="rad2degs" select="180 div $pi"/>
>
>and further down:
>
>    <!-- convert radians to degrees (when 'deg' specified) -->
>    <xsl:value-of
>     select="(($pUnit = 'rad') * $vradResult)
>              + ((not($pUnit = 'rad')) * ($vradResult * $rad2degs))"/>
>
>which means, that when we want to conver $pX radians to degrees, we'll
>use:
>
>$pX * $rad2degs
>
>
>If one needs to work also with minutes and seconds, then this can be
>added easily -- delete or multiply twice by 60.
>
>Should one wait (how long?) until an extension function is provided by
>his vendour or by a "standard extension function" and his vendour then
>implements it? And hope to be portable?
>
>Or just use the simple pure XSLT 1.0 expressions above?
>
>I think everybody can easily find the correct answer.
>
>
>=====
>Cheers,
>
>Dimitre Novatchev.
>http://fxsl.sourceforge.net/ -- the home of FXSL
>
>
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