How to use "Fract/Exp String To Number"

[jan cheung]

My idea is using this"Fract/Exp String To Number" function to read a number from a text file, but what value should I input in the default parameter if I want to read a number up as small as 1e-9,since the default value is zero , just can read a number up to doublem precision.
my email is ee_cwkac@stu.ust.hk
Thank you veyr much!

[Lab Viewer]

As the help states "If you leave default unwired, the parameter defaults to a DOUBLE-precision, floating-point value of 0". Just wire another type (EXT) to default and the result will change its type too.
Hope I understood your problem.

p.s.: I attached a VI with default EXT precision for convertion.

[btrcool]

 Guys, thank you very much!!! You just solved my problem by chance, but still you did!!! 🙂