Name
exp, exp2, expm1 — exponential functions
Synopsis
exp(
|
in x double precision); |
exp2(
|
in x double precision); |
expm1(
|
in x double precision); |
Description
These functions work with double precision floating point numbers. They convert their argument to an IEEE 64-bit float and return a result of that type.
: exp raises e to the power of x (e^x).
: exp2 raises 2 to the power of x (2^x).
: expm1 returns exp(x) - 1, computed accurately for very small x.
Parameters
x
double precision
Return Values
exp returns a IEEE 64-bit float.
Examples
Example 24.110. Simple Examples
SQL> select concat ('the EXP of 0.513513 is: ', cast (exp (0.513513) as varchar));
callret
VARCHAR
_______________________________________________________________________________
the EXP of 0.513513 is: 1.671152
1 Rows. -- 3 msec.