# Tagged Questions

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35 views

### Unix command to return maximum float value out of two after subtraction

This is similar to question about getting the minimum/maximum of two numbers, but I'm interested to do the same with float numbers. So basically I'm trying to use shell arithmetic expansion using the ...
3k views

### BCâ€”automatic full precision multiplication

High, I need to test my arbitrary precision calculator, and bc seems like a nice yardstick to compare to, however, bc does truncate the result of each multiplication to what seems to be the maximum ...
20 views

### How to use the result from last calculation in a new calculation in wcalc?

In wcalc how can I do something like -> 1+2 = 3 -> X+1 = 4 where X equals the result of the last calculation (that is 3)?
6k views

### bc doesn't support log and factorial calculation?

Is there any other command line calculator that supports log, n! calculations ? At least bc can't do that, it told me parse error It's best if I could use script, e.g echo '5!' | program
140k views

### How to do integer & float calculations, in bash or other languages/frameworks?

Using echo "20+5" literally produces the text "20+5". What command can I use to get the numeric sum, 25 in this case? Also, what's the easiest way to do it just using bash for floating point? For ...
81 views

### dc unix : preserving initial value even after storing new value at the same array index

I'm unable to understand this example given in manpage of dc: \$ dc 1 0:a 0Sa 2 0:a La 0;ap 1 To me answer should be 2 because: 1 0:a Here we store 1 at 0th position of array a. 0Sa ...
61 views

### Any way to customize the initialization of variables in the bc calculator?

The bc calculator appears to assign uninitialized variables the value of zero. I would like to alter this behavior so that when bc encounters an uninitialized variable, it instead flags the expression ...
147 views

### bc scale: How to avoid rounding? (Calculate small binomial probability)

Following code calculates the Binomial Probability of a success event k out of n trials: n=144 prob=\$(echo "0.0139" | bc) echo -e "Enter no.:" read passedno k=\$passedno nCk2() { num=1 den=...
127 views

### calendar to check the date and then search 3 months back and add up the days of those months?

I want to use the cal comand or the date comand to displace the current day then I want it to displace 3 months before the current date then add up all the days in those 3 months up to the current ...
10k views

### Does bc support hex calculations?

I'm trying to do a hex calculation directly with bc, I already specified the scale. echo 'scale=16;c06b1000-c06a5e78' | bc But I still get a zero. What could be wrong?
2k views

### Installing Linux on the TI-nspire

I am having trouble installing Linux on my TI-nspire cx cas graphing calculator. I downloaded the files and the Linux image. I have read several websites on the topic but it was not that much help, ...
7k views

### How is bc different from dc?

What are the differences between dc and bc calculators? When should I use dc and when bc?
565 views

### how to add command line calculator to bash that uses comma as decimal mark?

How can I add a command line calculator to my bash? I have found some, but all of them use the full stop as decimal mark, but I want to have it to use the comma as decimal mark as most of the world ...
161 views

### Perform calculation in hex with Qalculate

I'm trying to do hex calculations, C - A, and I already changed number base to hex, but Qalculate still doesn't work.
89 views

### Where are the variables stored for mate-calc?

I know that there's no way to delete them by default in the application, but they have to be stored somewhere? I'm pretty handy with the command line, so I can do some such there. I believe that ...