Firebird Documentation IndexFirebird 2.5 Language Ref. UpdateExternal functions (UDFs) → ln
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ln

Library: ib_udf

Added in: IB

Better alternative: Internal function LN()

Description: Returns the natural logarithm of the argument.

Result type: DOUBLE PRECISION

Syntax: 

ln (number)

Declaration: 

DECLARE EXTERNAL FUNCTION ln
   DOUBLE PRECISION
   RETURNS DOUBLE PRECISION BY VALUE
   ENTRY_POINT 'IB_UDF_ln' MODULE_NAME 'ib_udf'
Prev: i64truncateFirebird Documentation IndexUp: External functions (UDFs)Next: log
Firebird Documentation IndexFirebird 2.5 Language Ref. UpdateExternal functions (UDFs) → ln