Using Float For Currency

[Hunter's Lists]

Howdy,

I have some methods that manipulate floats that represent a currency amount.

I often end up with more precision than I need, i.e.: $9.756.

What is the best way to scale that to 9.76?

Cheers.

 

[Wilson Bilkovich]

Howdy,

I have some methods that manipulate floats that represent a currency amou= nt.

I often end up with more precision than I need, i.e.: $9.756.

What is the best way to scale that to 9.76?

Try:
val =3D 9.756
sprintf("%.2f", val)
That says "print 'val' as a floating point value, with two decimal
places of precision.

 

[Neil Stevens]

Howdy,

I have some methods that manipulate floats that represent a currency amount.

I often end up with more precision than I need, i.e.: $9.756.

What is the best way to scale that to 9.76?

require 'bigdecimal'

amount = BigDecimal.new('9.756')
rounded = (amount * 100).round / 100
printf('%.02f', rounded)

Outputs '9.76'

 

[Dave Burt]

val = 9.756
sprintf("%.2f", val)
That says "print 'val' as a floating point value, with two decimal
places of precision.

Or just
"%.2f" % val

Cheers,
Dave

 

[Eero Saynatkari]

Howdy,

I have some methods that manipulate floats that represent a currency
amount.

I often end up with more precision than I need, i.e.: $9.756.

What is the best way to scale that to 9.76?

I think this has already been covered, but:

"Money does not float!"

Cheers.

E