XSLT / XPATH 2.0 split float to exponent / mantissa and find nearestengineering format

[RolfK]

Dear ALL,

I'm not sure about the most efficient method to get the mantissa and
exponent of a float in XSLT / XPATH 2.0. I must assume that the
numbers strings are not always in a E format.
E.g. +123E-9 is legal as well as -0.0002

So, what is the best and efficient way to split mantissa and exponent
and how to find the the nearest engineering format exponent.

Any help is welcome

Rolf

 

[Mukul Gandhi]

Following is my opinion about this question ...

The float value is internally stored in the computer hardware as a
mantissa and exponent components.

But the mantissa and exponents are not generally exposed to high level
languages.

I cannot find any built in functions for numeric data in XPath 2.0,
which allows us to retrieve the mantissa and exponent of float values.

Also you could notice, the java.lang.Float class has no methods to
retrieve the mantissa and exponents of the float.

I would be happy, if anybody could correct me on these points.

Regards,
Mukul