- Add Chinese units
jinandgongjin(by @eatradish) - Add Xbps (Void Linux) package (by @tranzystorek-io)
- Add MacPorts package (by @herbygillot)
- Variable names with underscores can now be correctly referenced
- Combined abbreviated units are now parsed case-insensitively:
> 100 kwh 100 kWh > 64 KB 64 kB - Add a new configuration option
enable-internet-access(defaults totrue) - Add
tbsunit as an abbreviation for tablespoons - Add
thouunit, representing a thousandth of an inch
- Add cup, tablespoon and teaspoon units (by @elcste)
- Add
binalias for binary (by @xfnw) - Change the internal implementation of exchange rate handlers (by @SekoiaTree)
- Fix unit test failures on 32-bit systems
- Add
@no_trailing_newlineattribute, which causes fend to not print a trailing newline after the calculation.$ fend @no_trailing_newline 5+5 10
- Add support for subtracting from dates (e.g.
@2023-01-08 - 5 days) - Fix some trigonometric functions behaving incorrectly when passing in values with units
- Add operators for permutations and combinations (by @frectonz)
n permute korn nPr k: compute the number ofk-permutations ofnn choose korn nCr k: number ofk-combinations ofn
- Add
@noapproxattribute to hide theapprox.annotation in the output:> pi approx. 3.1415926535 > @noapprox pi 3.1415926535 - Add
@plain_numberattribute, to removeapprox.and any units. This is especially useful in automated scripts.> 5 m / (3 s) approx. 1.6666666666 m / s > @plain_number 5 m / (3 s) 1.6666666666 - Add a new date literal syntax, e.g.
@2000-01-01 - Improve visual feedback when using the Telegram bot (by @miki-tebe)
- Add new SI prefixes quecca, ronna, ronto and quecto (by @frectonz)
- Add support for 256 (8-bit) colors in the CLI configuration
- Change
!debugto@debugfor consistency and improved shell script interoperability
- Add
andandorkeywords as alternatives to the&and|bitwise operators - Add Homebrew package (by @rhysmdnz)
- Add Chocolatey package (by @dgalbraith)
- Fix incorrect description of command-line arguments in man page (by @mcint)
- Support
_in fend-web (stores the previous answer) - Improve fend-web performance by serializing/storing variables properly
- Support case-insensitive currencies
- Support currency exchange rates in fend-wasm (by @NickGeek)
- Support using any base currency for exchange rate calculations, not just USD
- Add bitwise operators:
&: bitwise AND|: bitwise ORxor: bitwise XOR (^is already used for exponentiation)<<: left shift>>: right shift
- Automatically download up-to-date currency exchange rates,
e.g. when calculating
10 EUR to USD - fend can now read directly from files, e.g.
fend calculation.txtwill read and evaluate the contents ofcalculation.txt. Multiple files can be specified, as well as combinations of files and expressions. - Shebangs (e.g.
#!/usr/bin/env fend) no longer result in parse errors - You can now use
--to force fend to interpret arguments literally, e.g.fend -- -Vis interpreted as-1 voltsinstead of showing the version number - Fix bug where trailing whitespace or comments would result in a parse error
- Add a man page
- Add an MSI installer for Windows
- Remove MSIX installer, which was difficult to use due to it being unsigned
- Change fend website to https://printfn.github.io/fend
- Move fend documentation to https://printfn.github.io/fend/documentation
- Add a fend package to the Windows Package Manager (
winget)
- Add a
fend-wasm-nodejsNPM package - Add a Telegram bot
- Improve behaviour of percentages (credit to @Techcable), e.g.
5% * 80kgis now4 kg - Add a Markdown-like parsing mode to the WASM API
- Support
knforknots - Add an installer for Windows
- Support
radforradians(e.g.10 RPM to rad/s) - Support implicit inches for
feet(e.g.5 foot 5 to cm) - Ensure fend does not exit when pressing Ctrl-C to clear the current line
- Improve CLI colors
- Use Coulomb and Farad for prefixed units like
mCorµF - Add
sqmmunit for square millimeters - Add
pointunit for typographical points (i.e. 1/72 inch) - Improve CLI behavior when pressing Ctrl-C to clear the current line
- Support omitting inches when writing e.g.
5'1: fend will now automatically interpret that as5'1" - Improve reliability when piping data into fend on the command line, e.g.
when running
echo "1+1" | fend - Support compiling fend with Rust 1.56 (rather than requiring Rust 1.59)
- Allow
kmhandkm/hfor kilometers per hour - Change Planck's constant from
htoplanck - Add support for lambda notation
λx.x(in addition to the previous lambda notations\x.x,x:xandx => x) - Add a ZSH helper script that makes
fendmore convenient on the command line - Despite the major version bump, this release contains no breaking API changes
- The locations for the config and history files have changed on some operating
systems. On Linux and macOS, fend will now look in
~/.config/fend/config.tomlfor its configuration file, and store history in~/.local/state/fend/history. You can runfend helpto see which paths fend uses, and override them via theFEND_CONFIG_DIRandFEND_STATE_DIRenvironment variables if necessary. - Colors in the CLI are now enabled by default. They can be disabled via the
enable-colorsconfig option, or via theNO_COLORenvironment variable.CLICOLORandCLICOLOR_FORCEenvironment variables are also respected. See https://bixense.com/clicolors/ and https://no-color.org for more info. - Add a
max-history-sizeconfig option to control how many history entries are saved by default. - Improve error-checking when reading the config file. Minor errors will now only produce warnings, and no longer cause parsing to fail entirely.
- There are now Linux ARM builds available, for both
armv7-gnueabihfandaarch64architectures.
- Add base names
ternaryandsenary - Reduce CLI binary sizes
- Improve command-line argument parsing, including support for multiple arguments
- The most recent calculation result is now stored in a special variable
_(orans):> 5 * 10 50 > _ + 5 55 > _ * 2 110 > ans * 2 220
- Fix minor bug in the
fend-wasm-webNPM package
- Add
stoneunit - Add initial support for date arithmetic, e.g.
('2020-05-04' to date) + 500 days - There is now a
fend-wasm-webNPM package available, built with the--target weboption
- Add basic tab completion support to the CLI interface
- Improve output for
()types in the CLI and infend-wasm
- Fully support empty statements and trailing semicolons
- Add amp hour abbreviation (e.g.
mAh) - Improve error message when attempting to convert between incompatible units
- Add support for D&D-style dice syntax. For example,
d6refers to a standard 6-sided die.> roll d6 4 > roll d20 # 20-sided die 17 > roll 2d6 # sum of two 6-sided dice 7 > 2d6 # view the probability distribution 2: 2.78% ##### 3: 5.56% ########## 4: 8.33% ############### 5: 11.11% #################### 6: 13.89% ######################### 7: 16.67% ############################## 8: 13.89% ######################### 9: 11.11% #################### 10: 8.33% ############### 11: 5.56% ########## 12: 2.78% ##### > roll(d20 + d6 + 4) # arithmetic operations 14 - Fix
luxunit definition - Remove the
->conversion syntax: usetoinstead
- Support modulo with arbitrarily large integers
- Add a config option to use
CandFas coulomb and farad instead of degrees celsius and degrees fahrenheit - Add more units:
horsepower,lumen,lux,decareetc.
- Add more units:
atmosphere,mmHg,inHg,dB,miland more - Support variables over multiple statements in the wasm API
- Add variables and multiple statements (e.g.
a = 4; b = 10; a * bis40) - Add
mixed_fracas an alias formixed_fraction - Support the
£symbol for GBP - Allow
$and£before the associated number, e.g.$100/4is$25
- Add
k,M,GandTsuffixes for numbers (e.g.5kis5000) - Add a modulo operator
mod(e.g.5 mod 2is1) - Improve error messages for invalid unit conversions
- Add the golden ratio constant phi ϕ (
phiisapprox. 1.6180339886) - Fix incorrect currency exchange rates
- Add
true,false, and anot()function - Add
sqmandsqftunits for square meters and square feet respectively
- Add support for Unicode operators, such as ✕ or ÷
- Add color customization to the command-line interface by editing the
config.tomlfile. Refer to the defaultconfig.tomlfile here.
- Case-insensitive units: you can now write
5 Meters - Experimental date support:
- You can create a date object like so:
> "2021-05-20" to date Thursday, 20 May 2021 - No other date-related functionality has been implemented yet, including no times/timezones, durations, date arithmetic or different date formats.
- You can create a date object like so:
- fend now parses single and double quotes as feet and inches (instead of as string literals) in more situations, so you can once again write:
> 1.2192 m to ' 4' - The CLI program can now read options from a config file. Type
helpto find out where it is stored. Theconfig.tomlfile can contain the following options:prompt = '> ' color = false
- Terminal color support: this is disabled by default, so you'll need to create a config file containing
color = truefirst. - Added a
conjugatefunction that computes the complex conjugate of a number: e.g.conjugate(i)is-i. - Improve consistency around error messages
- Add support for strings and string literals. They can be in single or double quotes, and support a variety of escape sequences.
- Support conversions of numbers to strings
- Use
bas shorthand for bits (including e.g.Gb/s) - Remove the
0dnumber prefix
- Add °C and °F (including temperature conversions)
- Automatically simplify units in some calculations (e.g.
100 km/hr * 36 secondsbecomes1 km) - Add initial support for objects (try e.g.
mass of earth) - Add
squareandcubicfunctions - Add hectares and acres
This build was only released on NPM.
- Fix NPM package
- Improve debug representation (using e.g.
!debug 1)
- Allow leading zeroes for decimal numbers
- Allow upper-case "E" for exponential numbers (e.g.
1E3is1000) - Add
inas an alias forto(so you can now write3.14 in binary) - Add
log()function as shorthand forlog10() - Fix
kWhunit definition
- Include
LICENSE.mdfiles as part of the package on crates.io
- Add
versioncommand to get the current fend version - Support
-sin piand3 sin piwithout parentheses - Support function inverses: e.g.
sin^-1becomesasin - Add
to sfto convert numbers to a fixed number of significant figures - Make many calculations involving
sinandcosexact - Add
tau(τ), equal to2π - Add Yi- and Zi- binary prefixes
- Use decimal approximations instead of fractions by default
x to exactwill now convertxto an exact representation whenever possible, including using multiples of π- Add
cisas a shorthand forcos θ + i * (sin θ)
- Ensure that approximate numbers are always marked as such
- Fix a bug involving sin/cos/tan of negative numbers
- Make some calculations involving pi exact
- Fix parsing of recurring decimals in bases other than 10
- Support outputting mixed fractions (implicitly or via
to mixed_fraction) - Support unmatched parentheses (e.g.
2+3)*(1+2is15) - Support parsing of numbers with recurring digits (e.g.
0.(3)is equal to1/3) - Allow numbers that start with a decimal point, such as
.1
- Add support for lambda functions (e.g.
\x.x) - Change precedence of
toandas - Add live CLI output
- Add the GNU units database, containing several thousand unit definitions
- Add support for square roots of numbers with units
- Add unary division as a shorthand for
1/x(e.g./ second,64^/2) - Support
+in exponential notation (e.g.1.5e+2) - Allow
,as a digit separator (e.g.1,048,576)
- Use correct singular/plural unit names
- Base conversions using
to - Make exponents in other bases more consistent
- Allow leading zeroes for non-decimal numbers
- Support interrupting an ongoing calculation with Ctrl-C
- Save history continuously instead of only on program exit
- Fix parsing of
log10()andlog2() - Add factorial operator (
!)
Initial release:
- Arbitrary-precision arithmetic using rational numbers
- Support for complex numbers
- Binary, octal, hexadecimal and other number bases between 2 and 36.
- Keeps track of units, with support for SI and US customary units.
- Support for Emacs-style CLI shortcuts
- Trigonometric functions
- Useful physical and mathematical constants