~drizzle-trunk/drizzle/development

1994.4.39 by Marisa Plumb
new material to address https://bugs.launchpad.net/drizzle/+bug/684803, new functions
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Mathematical Functions and Operators
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====================================
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Mathematical operators are provided for many Drizzle types. ::
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	========    ==================   ==========  ======
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	Operator    Description          Example     Result
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	========    ==================   ==========  ======
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	+           addition             2 + 3       5
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	-           subtraction          2 - 3       -1
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	*           multiplication       2 * 3       6
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	/           division             4 / 2       2
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	%           modulo (remainder)   5 % 4       1
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	|/          square root          |/ 25.0     5
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	||/         cube root            ||/ 27.0  3
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	!           factorial            5 !         120
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	!!          factorial            !! 5        120
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	@           absolute value       @ -5.0      5
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	========    ==================   ==========  ======
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