EnglishFrenchSpanish

OnWorks favicon

ev - Online in the Cloud

Run ev in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

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

SYNOPSIS


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

Download Windows & Linux apps

  • 1
    PAC Manager
    PAC Manager
    PAC is a Perl/GTK replacement for
    SecureCRT/Putty/etc (linux
    ssh/telnet/... gui)... It provides a GUI
    to configure connections: users,
    passwords, EXPECT regula...
    Download PAC Manager
  • 2
    GeoServer
    GeoServer
    GeoServer is an open-source software
    server written in Java that allows users
    to share and edit geospatial data.
    Designed for interoperability, it
    publishes da...
    Download GeoServer
  • 3
    Firefly III
    Firefly III
    A free and open-source personal finance
    manager. Firefly III features a
    double-entry bookkeeping system. You can
    quickly enter and organize your
    transactions i...
    Download Firefly III
  • 4
    Apache OpenOffice Extensions
    Apache OpenOffice Extensions
    The official catalog of Apache
    OpenOffice extensions. You'll find
    extensions ranging from dictionaries to
    tools to import PDF files and to connect
    with ext...
    Download Apache OpenOffice Extensions
  • 5
    MantisBT
    MantisBT
    Mantis is an easily deployable, web
    based bugtracker to aid product bug
    tracking. It requires PHP, MySQL and a
    web server. Checkout our demo and hosted
    offerin...
    Download MantisBT
  • 6
    LAN Messenger
    LAN Messenger
    LAN Messenger is a p2p chat application
    for intranet communication and does not
    require a server. A variety of handy
    features are supported including
    notificat...
    Download LAN Messenger
  • More »

Linux commands

Ad