Notes for the bc(1) arbitrary precision calculator
Defines how some operations use digits after the decimal point . (Default 0) So if you type 5/5 bc interprets this as 5.00000/5.00000. and the answer is 1.00000
A variable that has the value of the last printed number. So if you have a running total in bc of 100, then last+10 would result in 110.
Define the conversion base for input numbers.
Define the conversion base for output numbers.
For example : Say we want to add the binary numbers 101 and 111 but output the result in decimal.
obase=10 ibase=2 101+111 12
Note : Keep in mind if you set the ibase to a particular number, all variable values you set will need to be in that base.
For example : Say we have ibase=2 and obase=10. To change ibase to 10 (decimal) then we would do : ibase=1010
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