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 Too may digits returned with atof

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T O P I C    R E V I E W
peter.cook Posted - 03/03/2006 : 4:15:13 PM
Origin Version (Select Help-->About Origin): 7.5 SR5
Operating System: Win2000

Hi,

Using an external C++ dll I have eg

(eg dValue = 65.23456)

sprintf(Numchar,"%.2f",dValue);
dValue=atof(Numchar);

my problem is that Numchar may be represented by eg '65.23' but after atof dValue may occasionally end up as eg 65.2300000001.

Similarly I can get eg 98.89999999999 from 98.9

Any hints as to how to avoid this 'precision' problem?

Thanks,

Cheers,

Pete

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