How to make the displayed number shorter?



Like this:
(%i2360) FPPREC:6;

(%o2360)                               6
(%i2361) tex(float(1/3));

$$0.3333$$
(%o2361)                             FALSE
(%i2362) tex(float(1/3*10^-24));

$$3.3333333333333335 \times 10^{-25}$$
(%o2362)                             FALSE
(%i2363) tex(float(1/3*10^-2));

$$0.0033$$
(%o2363)                             FALSE

The output of (%i2362) is not wanted. Why the setting
of FPPREC doesn't work when the value is too little?

However, 
(%i2364) float(1/3*10^-24);

(%o2364)                          3.33333E-25
It works without "tex"!

Is there any other way to make the "tex"ed value to be
shorter. It is for the convenience of reading.

Thanks for consideration.

YC Zou

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