YAFU as a calculator?

EdH · 2021-07-07, 20:00

Quick question:

If I'm in YAFU and enter something like 338^53, I get a value, but from the command line, if I enter ./yafu 338^53 (with or without quotes), it starts factoring. Is there a way to just get the value from the command line?

I'm actually looking for a manner to use YAFU within a Bash script to get values that are too large for the calculator..

bsquared · 2021-07-07, 20:13

Yes, the "expression" function.

Some time ago I decided that factor() should be yafu's default action and added this function for just this reason.

Code:

./yafu "expr(338^53)"

It prints the answer to stdout like so:

Code:

ans = 107791648724516899391794749922437879901663656637741542210620810142348006207593399220450871624756179567322798904744723676640112990486528

hopefully you can use that.

EdH · 2021-07-07, 21:24

Thanks Ben,

This is exactly what I want. And, the -silent option works perfectly for providing just the value, so I won't have to parse.

2021-07-07, 20:00	#1
EdH "Ed Hall" Dec 2009 Adirondack Mtns 12453₈ Posts	YAFU as a calculator? Quick question: If I'm in YAFU and enter something like 338^53, I get a value, but from the command line, if I enter ./yafu 338^53 (with or without quotes), it starts factoring. Is there a way to just get the value from the command line? I'm actually looking for a manner to use YAFU within a Bash script to get values that are too large for the calculator..

2021-07-07, 20:13	#2
bsquared "Ben" Feb 2007 111010100101₂ Posts	Yes, the "expression" function. Some time ago I decided that factor() should be yafu's default action and added this function for just this reason. Code: ./yafu "expr(338^53)" It prints the answer to stdout like so: Code: ans = 107791648724516899391794749922437879901663656637741542210620810142348006207593399220450871624756179567322798904744723676640112990486528 hopefully you can use that. Last fiddled with by bsquared on 2021-07-07 at 20:15 Reason: output

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Aliaut Sum Calculator	drmurat	Aliquot Sequences	7	2020-07-01 09:28
Calculator Soup	MattcAnderson	Lounge	0	2019-10-29 05:19
Running YAFU via Aliqueit doesn't find yafu.ini	EdH	YAFU	8	2018-03-14 17:22
LL Credit Calculator	swl551	Software	0	2012-12-04 17:49
Large Digit Calculator	Primeinator	Lounge	7	2006-02-16 23:11

2021-07-07, 21:24	#3
EdH "Ed Hall" Dec 2009 Adirondack Mtns 5,419 Posts	Thanks Ben, This is exactly what I want. And, the -silent option works perfectly for providing just the value, so I won't have to parse.