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Operating Systems OS X (Apple) A fixed point basic calculator for DASH. Post 303025597 by Corona688 on Tuesday 6th of November 2018 03:08:50 PM
Old 11-06-2018
Quote:
Originally Posted by wisecracker
I wouldn't know where to start for floating point maths in pure 'dash' and I'll stick my neck out and say it cannot be done at all.
I misread your post as dash misbehaving rather than zsh, but anyway - I don't mean the shell has floating point. I mean shell printf could use it as a temporary intermediate to implement %f.
Quote:
I don't use "%f" anywhere, I use "%.f"
potato, potahto. The simplest way to implement %f is the C function calls strtof and sprintf, which would use a floating point intermediate. It'd unprocess the number into a float then immediately process it back into a string using the "%.f" specifier. Less than a line.

Quote:
Done manually...
Code:
Last login: Tue Nov  6 19:05:47 on ttys000
AMIGA:amiga~> cd Desktop/Code/Shell
AMIGA:amiga~/Desktop/Code/Shell> ./calc .000000277 - +.000000092
+0.000000185
AMIGA:amiga~/Desktop/Code/Shell> # Therefore SUM="000000185"
AMIGA:amiga~/Desktop/Code/Shell> FLOAT="000000185"
AMIGA:amiga~/Desktop/Code/Shell> INT=""
AMIGA:amiga~/Desktop/Code/Shell> NUMBER=$(( FLOAT/100 ))
-bash: 000000185: value too great for base (error token is "000000185")
AMIGA:amiga~/Desktop/Code/Shell> dash
AMIGA:\u\w> ./calc .000000277 - +.000000092
+0.000000185
AMIGA:\u\w> # Therefore SUM="000000185"
AMIGA:\u\w> FLOAT="000000185"
AMIGA:\u\w> INT=""
AMIGA:\u\w> NUMBER=$(( FLOAT/100 ))
dash: 6: Illegal number: 000000185
AMIGA:\u\w> exit
AMIGA:amiga~/Desktop/Code/Shell> _

Bazza...
You're taking the path of maximum resistance again. If you leave out the decimal point entirely and assume all numbers are multiplied by 100, addition and subtraction "just work", no zero padding required. Then you use division and modulus to extract the full and fractional parts later.

Last edited by Corona688; 11-06-2018 at 04:15 PM..
 

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Net::Google::Code(3pm)					User Contributed Perl Documentation				    Net::Google::Code(3pm)

NAME
Net::Google::Code - a simple client library for google code SYNOPSIS
use Net::Google::Code; my $project = Net::Google::Code->new( project => 'net-google-code' ); $project->load; # load its metadata, e.g. summary, owners, members, etc. print join(', ', @{ $project->owners } ); # return a Net::Google::Code::Issue object, of which the id is 30 $project->issue( id => 30 ); # return a Net::Google::Code::Download object, of which the file name is # 'FooBar-0.01.tar.gz' $project->download( name => 'FooBar-0.01.tar.gz' ); # return a Net::Google::Code::Wiki object, of which the page name is 'Test' $project->wiki( name => 'Test' ); # loads all the downloads $project->load_downloads; my $downloads = $project->downloads; # loads all the wikis $project->load_wikis; my $wikis = $project->wikis; DESCRIPTION
Net::Google::Code is a simple client library for projects hosted in Google Code. Since 0.15, Net::Google::Code offers google's official issues api support. Besides the new "Net::Google::Code::Issue::list", "Net::Google::Code::Issue::Comment::list" and <Net::Googlel::Code::Issue::load_comments> methods, which use the api from start, you can set $Net::Google::Code::Issue::USE_HYBRID to true to load, create and update issue with the api too. But the official api is not function complete yet( e.g. no attachment support, can't merge, etc. ), Net::Google::Code will back to the scraping way to accomplish those stuff. ATTRIBUTES
project the project name email, password user's email and password, used to authenticate base_url the project homepage base_svn_url the project svn url (without trunk) base_feeds_url the project feeds url summary description labels owners members INTERFACE
load load project's home page, and parse its metadata parse acturally do the parse job, for load(); load_downloads load all the downloads, and store them as an arrayref in $self->downloads load_wikis load all the wikis, and store them as an arrayref in $self->wikis issue return a new Net::Google::Code::Issue object, arguments will be passed to Net::Google::Code::Issue's new method. download return a new Net::Google::Code::Download object, arguments will be passed to Net::Google::Code::Download's new method. wiki return a new Net::Google::Code::Wiki object, arguments will be passed to Net::Google::Code::Wiki's new method. DEPENDENCIES
Any::Moose, HTML::TreeBuilder, WWW::Mechanize, Params::Validate XML::FeedPP, DateTime, JSON, URI::Escape, MIME::Types, File::MMagic INCOMPATIBILITIES
None reported. BUGS AND LIMITATIONS
No bugs have been reported. This project is very very young, and api is not stable yet, so don't use this in production, at least for now. AUTHOR
sunnavy "<sunnavy@bestpractical.com>" Fayland Lam "<fayland@gmail.com>" LICENCE AND COPYRIGHT
Copyright 2008-2010 Best Practical Solutions. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.10.1 2010-04-26 Net::Google::Code(3pm)
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