﻿ Operators — Introduction
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# Operators — Introduction

The operators of the Safety Tool are like subroutines or functions in a programming language: they yield results which may be further used to produce some new results, etc.

### Table 2: List of arithmetic operators (in order of decreasing precedence), arithmetic arguments, arithmetic result.

 Name Description ^ power - unary * multiplication / division % modulo (integer arguments) + addition - subtraction

### Table 3: List of comparison operators (in order of decreasing precedence), arithmetic arguments, logical result.

 Name Description greater than less than greater or equal than less or equal than equal to not equal to (C style) not equal to (PASCAL style)

### Table 4: List of logical operators (in order of decreasing precedence), logical arguments, logical result.

 Name Description logical AND logical OR

### Table 5: List of predefined mathematical functions (floating point or integer argument, floating point result).

Name

Description

sin

sine

cos

cosine

tan

tangent

asin

arc sine

acos

arc cosine

atan

arc tangent

ln

natural logarithm

log

base 10 logarithm

exp

exponent ( power argument)

sqrt

square root

abs

absolute value

cbrt

cubic root

sinh

hyperbolic sine

cosh

hyperbolic cosine

tanh

hyperbolic tangent

asinh

inverse hyperbolic sine

acosh

inverse hyperbolic cosine

atanh

inverse hyperbolic tangent

As was stated at the beginning of the paragraph devoted to the tool's command language, the actions that may be applied to an object depend on this object's type. That is why the existing operators will be listed together with their argument lists and result types.

The simplest operators, acting on scalar type objects are listed in Tables 2 through 5.

There are two categories of operations: operators and instructions. The first ones yield a result computed using their operands. The second ones have a global action (such as output) or modify (some of) their operands.

Finally, some operators (or instructions) can have several syntaxes. The operation to be executed is deduced in such a case from the type and the number of operands. This note applies to arithmetic operators (number number, number vector) and to complex operators as well (for example, the NEW_LINE Operator).

See the Batch Language Reference Manual for the description of the syntax of all operators and instructions.