Log10
Return 10-Based logarithm.
Declaration
Source position: math.pp line 388
function Log10(x: Float) : Float;
Description
Log10 returns the 10-base logarithm of X.
Errors
If x is less than or equal to 0 an 'invalid fpu operation' error will occur.
See also
Name | Description |
---|---|
ldexp | Return (2 to the power p) times x |
lnxp1 | Return natural logarithm of 1+X |
log2 | Return 2-based logarithm |
logn | Return N-based logarithm. |
Example
Program Example21;
{ Program to demonstrate the log10 function. }
Uses math;
begin
Writeln(Log10(10):8:4);
Writeln(Log10(100):8:4);
Writeln(Log10(1000):8:4);
Writeln(Log10(1):8:4);
Writeln(Log10(0.1):8:4);
Writeln(Log10(0.01):8:4);
Writeln(Log10(0.001):8:4);
end.