Firebird Documentation Index → Firebird 2.1 Language Ref. Update → Internal functions → LOG10()
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LOG10()

Available in: DSQL, PSQL

Added in: 2.1

Description: Returns the 10-based logarithm of the argument.

Result type: DOUBLE PRECISION

Syntax: 

LOG10 (number)

  • If the argument is 0, -INF is returned. If the argument is negative, NaN is returned.

Important

If the external function LOG10 is declared in your database, it will override the internal function. To make the internal function available, DROP or ALTER the external function (UDF).

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Firebird Documentation Index → Firebird 2.1 Language Ref. Update → Internal functions → LOG10()