Rounding error when using constant raster

Question

I created a constant raster using the toolbox with value 1 (float)

I have the following python code:a = (Raster('myRaster') * 1.724)

When I print the maximum/minimum of 'a', I get 1.72399997711

I also have a feeling that these rounding errors are causing some other problems in my script.

How can I fix this without manually rounding every operation?

DanPatterson_Retired · Answer

because of floating point representation

JohnDoe1 · Answer

do a web search on floating point representation .  There is nothing you can do about it

I thought it would be  some numerical error, but I'm wondering whya = 1.724
b = 1.0 * 1.724
print b #=1.724

does work, and my original code doesn't?

DanPatterson_Retired · Answer

do a web search on floating point representation .  There is nothing you can do about it