Command CALC

Function:

Perform basic arithmetic calculations in a batch file. The result is either displayed or stored in an environment variable called CALC.

Syntax:

CALC [?] expr

? Display the result only. Does not set the environment variable.

expr Sequence of tokens, that can include the following :-

+ Addition

- Subtraction

* Multiplication

/ or \ Division

% Remainder or modulus

~ Bitwise NOT

^ Bitwise XOR

& Bitwise AND

| Bitwise OR

<< Left bit shift

>> Right bit shift

&& Logical AND

|| Logical OR

! Logical NOT

< Boolean less then

> Boolean greater then

<= Boolean less then or equal to

>= Boolean greater then or equal to

== Boolean equal to

!= Boolean not equal to

( Left bracket

) right bracket

numbers Either integer or real numbers

strings Sequence of characters, enclosed in double quotes

environment variable names Name of an environment variable that contains either a number or a string. Do not include any %s around the environment variable name

functions Scientific and Miscellaneous functions

Warning:

When using tokens that include characters that have a special meaning (eg. <, >, & etc) then enclose the complete expr in brackets, as follows :-

CALC [?] ( expr )

When in doubt, use the above syntax.

Note:

The normal operator precedence is assumed, unless the left and right brackets are used to over-ride the default precedence.

When specifying an environment variable name in an expression, do not surround the name in %s. The parser will automatically load the environment variable at evaluation time. For example :-

SET count=1 CALC ? (count + 100)

will output the answer 101.

Examples on using CALC.

Also see command LET and Batch Files.