FreeAdhocUDF for InterBase and FireBird in deutschin englishen françaisen españolin italianoa português
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Functions for constants 5 functions
Numeric Constants 2 functions
Physical Constants  3 functions
since FireBird 2.1 this function is substitutable with a native SQL statement
 
Functions for constants: Numeric Constants
F_PI function from adhoc
input/output-compatibility to rFunc (PI)
substitutable with PI
Entrypoint pi Output RETURN mechanism BY VALUE
Input nothing
Output DOUBLE Circle Pi
TestSQL
SELECT 3.14159265358979 AS ISCORRECT, F_PI() FROM RDB$DATABASE;
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F_EULER function from adhoc
input/output-compatibility to rFunc (E)
Entrypoint euler Output RETURN mechanism BY VALUE
Input nothing
Output DOUBLE Eulernumber e
TestSQL
SELECT 2.71828182845905 AS ISCORRECT, F_EULER() FROM RDB$DATABASE;
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Functions for constants: Physical Constants 
F_C function from adhoc
Entrypoint c Output with BY VALUE
Input nothing
Output INTEGER constant c for speed of light [m/s]
TestSQL
SELECT 299792458 AS ISCORRECT, F_C() FROM RDB$DATABASE;
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F_G function from adhoc
Entrypoint g Output with BY VALUE
Input nothing
Output DOUBLE constant g for acceleration of gravity [m/s^2]
TestSQL
SELECT 9.80665 AS ISCORRECT, F_G() FROM RDB$DATABASE;
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F_KELVIN function from adhoc
Entrypoint k Output with BY VALUE
Input nothing
Output DOUBLE constant for absolute zero = 0 degree Kelvin
TestSQL
SELECT -273.15 AS ISCORRECT, F_KELVIN() FROM RDB$DATABASE;
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