Atan
From InterBase
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atan
Returns the arctangent of the input value.
DECLARE EXTERNAL FUNCTION ATAN DOUBLE PRECISION RETURNS DOUBLE PRECISION BY VALUE ENTRY_POINT 'IB_UDF_atan' MODULE_NAME 'ib_udf';
Go Up to The InterBase UDF Library
atan
Returns the arctangent of the input value.
DECLARE EXTERNAL FUNCTION ATAN DOUBLE PRECISION RETURNS DOUBLE PRECISION BY VALUE ENTRY_POINT 'IB_UDF_atan' MODULE_NAME 'ib_udf';