Brian Dunning's FileMaker Custom Functions

cosSeries ( angleInRadians ; series ; k )

cosSeries returns the cosine of an angle as precise as you want, without the limitations of the built-in cosine function.

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Jeremy Bante   Jeremy Bante
OshVay Systems, Inc.
http://www.oshvay.com/

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  Sample input:
SetPrecision(
cosSeries( 1; 0; 0);
250
)
  Sample output:
.5403023058681397174009366074429766037323104206179222276700972553811003947744717645179518560871830893435717311600300890978606337600216634564065122654173185847179711644744794942331179245513932543359435177567028925963757361543275496417544917751151312227

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

With FileMaker 7 came the capacity for storing numbers with 400 decimal digits of precision. However, FileMaker's built-in trigonometric functions still only evaluate to 16 places; cosSeries returns the cosine of an angle [in radians] as precise as you want (with use of the SetPrecision function) by recursively adding the terms of a power series. The last two arguments to the cosSeries function are for the function's own use in recursive calls, and each should always be 0 when called by the developer.

 

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Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

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