# ev - Online in the Cloud

This is the command ev that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

### PROGRAM:

#### NAME

ev - evaluate expressions

ev 'expr' ..

#### DESCRIPTION

Ev evaluates expressions given on the command line, and sends the results to the standard
output, one per line. An expression contains real numbers, function calls, and the
following operators:

+ - * / ^

Operators are evaluated left to right, except '^', which is right associative. Powers
have the highest precedence; multiplication and division are evaluated before addition and
subtraction. Expressions can be grouped with parentheses. All values are double
precision real.

The following library of functions is available:

if(cond, then, else)
if cond is greater than zero, then is evaluated, otherwise else is evaluated.

select(N, a1, a2, ..)
return aN (N is rounded to the nearest integer). If N is zero, the number of
available arguments is returned.

rand(x) compute a random number between 0 and 1 based on x.

floor(x) return largest integer not greater than x.

ceil(x) return smallest integer not less than x.

sqrt(x) return square root of x.

exp(x) compute e to the power of x (e approx = 2.718281828).

log(x) compute the logarithm of x to the base e.

log10(x) compute the logarithm of x to the base 10.

sin(x), cos(x), tan(x)
trigonometric functions.

asin(x), acos(x), atan(x)
inverse trigonometric functions.

atan2(y, x)
inverse tangent of y/x (range -pi to pi).

#### EXAMPLE

To pass the square root of two and the sine of .5 to a program:

program `ev 'sqrt(2)' 'sin(.5)'`

Use ev online using onworks.net services

Free Servers & Workstations

• 1
deep-clean
A Kotlin script that nukes all build
caches from Gradle/Android projects.
Useful when Gradle or the IDE let you
down. The script has been tested on
macOS, but ...
• 2
Eclipse Checkstyle Plug-in
The Eclipse Checkstyle plug-in
integrates the Checkstyle Java code
auditor into the Eclipse IDE. The
plug-in provides real-time feedback to
the user about viol...
• 3
AstrOrzPlayer
AstrOrz Player is a free media player
software, part based on WMP and VLC. The
player is in a minimalist style, with
more than ten theme colors, and can also
b...
• 4
movistartv
Kodi Movistar+ TV es un ADDON para XBMC/
Kodi que permite disponer de un
decodificador de los servicios IPTV de
Movistar integrado en uno de los
mediacenters ma...
• 5
Code::Blocks
Code::Blocks is a free, open-source,
cross-platform C, C++ and Fortran IDE
built to meet the most demanding needs
of its users. It is designed to be very
extens...