[Lazarus] help in maths

[Terry A. Haimann]

Terry A. Haimann wrote:
> Héctor Fiandor Rosario wrote:
>> Dear Mr. Coppola:
>>
>> really I solve using this:
>>
>> var valor1,valor2,valor3:integer;
>>
>> valor3:=round(power(valor1,valor2));
>>
>> and declaring the unit "math" in uses.
>>
>> Thanks very much
>>
>> Ing. Héctor F. Fiandor
>> hfiandor at infomed.sld.cu
>>
>>
>> ---------------------------------------
>>    Red Telematica de Salud - Cuba
>>          CNICM - Infomed
>>
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>>
> That is fine if raising to an integer power, but if not:
>
> Result := exp((ln(x) * y);
>
> Will give you the correct value for non integer powers.  Ok, there is 
> a small error which is insignificant for all practical purposes.
>
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I guess I am wrong, both ways can raise to a non integer power.